List of brown dwarfs - AbsoluteAstronomy.com

The first isolated brown dwarf
Brown dwarf
Brown dwarfs are sub-stellar objects which are too low in mass to sustain hydrogen-1 fusion reactions in their cores, which is characteristic of stars on the main sequence. Brown dwarfs have fully convective surfaces and interiors, with no chemical differentiation by depth...

discovered was Teide 1

Teide 1

Teide 1 was the first brown dwarf to be verified in 1995. This brown dwarf is located in the Pleiades open star cluster located approximately 400 light years from Earth....

in 1995. The first brown dwarf discovered orbiting a star was Gliese 229

Gliese 229

Gliese 229 is a red dwarf star about 19 light years away in the constellation Lepus. It has 58% of the mass of the Sun, 69% of the Sun's radius, and a very low projected rotation velocity of 1 km/s at the stellar equator.The star is known to be a low activity flare star, which means it...

B, also discovered in 1995. The first brown dwarf found to have a planet was 2M1207

2M1207

2M1207, 2M1207A or 2MASS J12073346-3932539 is a brown dwarf located in the constellation Centaurus; a companion object, 2M1207b, may be the first extrasolar planetary mass companion to be directly imaged, and is the first discovered orbiting a brown dwarf.2M1207 was discovered during the course of...

, discovered in 2004.

Since a brown dwarf mass is between a planet

Planet

A planet is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.The term planet is ancient, with ties to history, science,...

and star

Star

A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...

, they have also been called planetar

Planetar

Planetar may refer to:* Planetar , a type of extrasolar planet* A race of Dungeons and Dragons, see Major planar races...

s or hyperjovians. Various catalog designations have been used to name brown dwarfs; names ending in 'b' are in orbit around a primary star.

The following list of 53 brown dwarf

Brown dwarf

Brown dwarfs are sub-stellar objects which are too low in mass to sustain hydrogen-1 fusion reactions in their cores, which is characteristic of stars on the main sequence. Brown dwarfs have fully convective surfaces and interiors, with no chemical differentiation by depth...

s for which data is available, out of a total of at least 626 known. Note that some extrasolar planet

Extrasolar planet

An extrasolar planet, or exoplanet, is a planet outside the Solar System. A total of such planets have been identified as of . It is now known that a substantial fraction of stars have planets, including perhaps half of all Sun-like stars...

s can turn out to be brown dwarfs if their mass is higher than originally thought: most have only minimum mass

Minimum mass

In astronomy, minimum mass is the lower-bound calculated mass of observed objects such as planets, stars and binary systems, nebulae, and black holes. Minimum mass is a widely cited statistic for extrasolar planets...

es because their inclination

Inclination

Inclination in general is the angle between a reference plane and another plane or axis of direction.-Orbits:The inclination is one of the six orbital parameters describing the shape and orientation of a celestial orbit...

of the orbit

Orbit

In physics, an orbit is the gravitationally curved path of an object around a point in space, for example the orbit of a planet around the center of a star system, such as the Solar System...

is not known. Examples include HD 114762 b

HD 114762 b

HD 114762 b is a candidate extrasolar planet, approximately 132 light years away in the constellation of Coma Berenices, and is probably a brown dwarf. This optically undetected companion to the late F-type star HD 114762 was discovered in 1989 by David Latham and others...

(>11.68 M_J), Pi Mensae b

Pi Mensae b

Pi Mensae b , also known as HD 39091 b, is an extrasolar planet approximately 59 light-years away in the constellation of Mensa...

(>10.312 M_J), and NGC 2423-3 b

NGC 2423-3 b

NGC 2423-3b is an extrasolar planet approximately 2498 light-years away in the constellation of Puppis. The planet was announced in 2007 to be orbiting the red giant star NGC 2423-3 . The planet has a mass at least 10.6 times that of Jupiter...

(>10.6 M_J).

Confirmed brown dwarfs orbiting primary stars

The following list contains 41 brown dwarfs that orbit primary stars.

Sorted by increasing right ascension
Right ascension
Right ascension is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. The other coordinate is the declination.-Explanation:...

of the parent star. Brown dwarfs within a system sorted by increasing orbital period
Orbital period
The orbital period is the time taken for a given object to make one complete orbit about another object.When mentioned without further qualification in astronomy this refers to the sidereal period of an astronomical object, which is calculated with respect to the stars.There are several kinds of...

.

Star Star A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...	Constellation Constellation In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....	App. mag. Apparent magnitude The apparent magnitude of a celestial body is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere...	Distance (ly Light-year A light-year, also light year or lightyear is a unit of length, equal to just under 10 trillion kilometres... )	Spectral type Stellar classification In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are most prominent in the light, giving an objective measure...	Brown dwarf Brown dwarf Brown dwarfs are sub-stellar objects which are too low in mass to sustain hydrogen-1 fusion reactions in their cores, which is characteristic of stars on the main sequence. Brown dwarfs have fully convective surfaces and interiors, with no chemical differentiation by depth...	Mass Mass Mass can be defined as a quantitive measure of the resistance an object has to change in its velocity.In physics, mass commonly refers to any of the following three properties of matter, which have been shown experimentally to be equivalent:... (M_J Jupiter mass Jupiter mass , is the unit of mass equal to the total mass of the planet Jupiter . Jupiter mass is used to describe masses of the gas giants, such as the outer planets and extrasolar planets. It is also used in describing brown dwarfs.... )	Radius Radius In classical geometry, a radius of a circle or sphere is any line segment from its center to its perimeter. By extension, the radius of a circle or sphere is the length of any such segment, which is half the diameter. If the object does not have an obvious center, the term may refer to its... (R_J)	Orbital period Orbital period The orbital period is the time taken for a given object to make one complete orbit about another object.When mentioned without further qualification in astronomy this refers to the sidereal period of an astronomical object, which is calculated with respect to the stars.There are several kinds of... (d Day A day is a unit of time, commonly defined as an interval equal to 24 hours. It also can mean that portion of the full day during which a location is illuminated by the light of the sun... )	Semimajor axis (AU Astronomical unit An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance.... )	Orbital eccentricity	Inclination Inclination Inclination in general is the angle between a reference plane and another plane or axis of direction.-Orbits:The inclination is one of the six orbital parameters describing the shape and orientation of a celestial orbit... (° Degree (angle) A degree , usually denoted by ° , is a measurement of plane angle, representing 1⁄360 of a full rotation; one degree is equivalent to π/180 radians... )	Discovery year
HD 8673 HD 8673 HD 8673 is an F-type main sequence star approximately 125 light-years away in the constellation of Andromeda. It has an apparent magnitude and absolute magnitude of 6.31 and 3.40 respectively...	Andromeda Andromeda (constellation) Andromeda is a constellation in the northern sky. It is named after Andromeda, the princess in the Greek legend of Perseus who was chained to a rock to be eaten by the sea monster Cetus...	6.31	124.75	F7V	b	14		639	1.58			2005
Upsilon Andromedae Upsilon Andromedae Upsilon Andromedae is a binary star located approximately 44 light-years away from Earth in the constellation Andromeda. The primary star is a yellow-white dwarf star that is somewhat younger than the Sun...	Andromeda Andromeda (constellation) Andromeda is a constellation in the northern sky. It is named after Andromeda, the princess in the Greek legend of Perseus who was chained to a rock to be eaten by the sea monster Cetus...	4.63	43.9	F8V	c Upsilon Andromedae c Upsilon Andromedae c is an extrasolar planet or star orbiting the Sun-like star Upsilon Andromedae A every 241.2 days. Its discovery in April 1999 by Geoffrey Marcy and R. Paul Butler made Upsilon Andromedae the first known star to host a multiple-planet planetary system...	13.98		237.7	0.822	0.224	7.9	1999
HD 13189 HD 13189 HD 13189 is an 8th magnitude star in Triangulum constellation. It is an orange bright giant star located 603 light years away. The mass is 3.5 times the Sun, which indicated that it was a B-type star when it was a main-sequence star...	Triangulum Triangulum Triangulum is a small constellation in the northern sky. Its name is Latin for triangle, and it should not be confused with Triangulum Australe in the southern sky. Its name derives from its three brightest stars, of third and fourth magnitude, which form a nearly isosceles long and narrow triangle...	7.57	603.4	K2II	b	14		471.6	1.85	0.28		2005
HD 16760 HD 16760 HD 16760 is a binary star system approximately 150 light-years away in the constellation Perseus. The primary star HD 16760 is a G-type main sequence star similar to our Sun. The secondary, HIP 12635 is 1.521 magnitudes fainter and located at a separation of 14.6 arcseconds from the primary,...	Perseus Perseus (constellation) Perseus is a constellation in the northern sky, named after the Greek hero Perseus. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations defined by the International Astronomical Union...	8.74	163	G5V	b	14.3		465.1	1.13	0.067		2009
HD 18445	Fornax Fornax Fornax is a constellation in the southern sky. Its name is Latin for furnace. It was created in the 18th century and is now one of the 88 modern constellations.-History:Fornax was formed by Nicolas Louis de Lacaille in 1756...	7.78	83.92	K2V	b	39		554.67	0.9	0.54		1991
BD−04°782	Eridanus Eridanus (constellation) Eridanus is a constellation. It is represented as a river; its name is the Ancient Greek name for the Po River. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations. It is the sixth largest of the modern...	9.39	66.6	K5V	b	21		240.92	0.7	0.28		1996
HD 283750	Taurus Taurus (constellation) Taurus is one of the constellations of the zodiac. Its name is a Latin word meaning 'bull', and its astrological symbol is a stylized bull's head:...	8.42	53.81	K2V	b	50		1.79	0.025	0.02		1996
HD 29587 HD 29587 HD 29587 is a Sun-like star located approximately 93 light-years away in the constellation of Perseus. The star is known to host a brown dwarf companion....	Perseus Perseus (constellation) Perseus is a constellation in the northern sky, named after the Greek hero Perseus. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations defined by the International Astronomical Union...	7.29	146.77	G2V	b	40		1471.7	2.5	0.37		1996
HD 38529 A HD 38529 HD 38529 is a binary star approximately 128 light-years away in the constellation of Orion.-HD 38529 A:...	Orion Orion (constellation) Orion, often referred to as The Hunter, is a prominent constellation located on the celestial equator and visible throughout the world. It is one of the most conspicuous, and most recognizable constellations in the night sky...	5.94	138	G4IV	c	37		2174.3	3.68	0.36	160	2002
HD 41004 B HD 41004 HD 41004 is a star system approximately 139 light years away in the constellation of Pictor.- HD 41004 A :HD 41004 A is a primary orange dwarf star of spectral type K1V and apparent magnitude 8.65.- Planetary system :...	Pictor Pictor Pictor is a small and faint constellation in the southern sky , located between the brilliant star Canopus and the Large Magellanic Cloud. Its name is Latin for painter, but it is in fact an abbreviation of its original name Equuleus Pictoris, the 'painter's easel', and it is normally represented...	12.33	139	M2	b	18.4		1.3283	0.0177	0.081		2004
Gliese 229 Gliese 229 Gliese 229 is a red dwarf star about 19 light years away in the constellation Lepus. It has 58% of the mass of the Sun, 69% of the Sun's radius, and a very low projected rotation velocity of 1 km/s at the stellar equator.The star is known to be a low activity flare star, which means it...	Lepus Lepus (constellation) Lepus is a constellation lying just south of the celestial equator, immediately south of Orion. Its name is Latin for hare. Although the hare does not represent any particular figure in Greek mythology, Lepus was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and it...	8.14	19	M1V	B	40		200 y	40			1995
AB Pictoris AB Pictoris AB Pictoris is a K-type star, approximately 148 light-years away in the constellation of Pictor. It has been identified as a member of the young Tucana–Horologium association. The star has also been classified as a BY Draconis variable...	Pictor Pictor Pictor is a small and faint constellation in the southern sky , located between the brilliant star Canopus and the Large Magellanic Cloud. Its name is Latin for painter, but it is in fact an abbreviation of its original name Equuleus Pictoris, the 'painter's easel', and it is normally represented...	9.16	149	K2V	b	13.5			275			2005
Tau Geminorum Tau Geminorum Tau Geminorum is a star in the Gemini constellation. It is an orange giant of the spectral type K2III, meaning it is probably fusing carbon and oxygen in its core to form iron and nickel. It has the apparent magnitude of 4.40, visible to the naked eye with moderate difficulty. The absolute...	Gemini Gemini (constellation) Gemini is one of the constellations of the zodiac. It was one of the 48 constellations described by the 2nd century astronomer Ptolemy and it remains one of the 88 modern constellations today. Its name is Latin for "twins", and it is associated with the twins Castor and Pollux in Greek mythology...	4.40	302	K2III	b	18.1		305				2004
HAT-P-13 HAT-P-13 HAT-P-13, also known as GSC 03416-00543, is a G-type main sequence star approximately 697 light-years away in the constellation Ursa Major. In 2009 it was discovered that this star is orbited by two massive planets, the innermost of which transits the star...	Ursa Major Ursa Major Ursa Major , also known as the Great Bear, is a constellation visible throughout the year in most of the northern hemisphere. It can best be seen in April...	10.62	698	G4	c HAT-P-13c HAT-P-13c is a substellar object orbiting the star HAT-P-13 located 698 light years away from Earth in the constellation of Ursa Major. With a mass at least 15.2 times that of Jupiter, it may be a massive planet or a small brown dwarf...	15.2		428.5	1.186	0.691		2009
G 196-3 G 196-3 G 196-3 is a young low-mass M dwarf type star which is about 100 million years old. The star is located within the Ursa Major constellation about 50.2 light years away from the Earth. During observations by Instituto de Astrofísica de Canarias in Tenerife, Spain in 1998, a substellar-mass object...	Ursa Major Ursa Major Ursa Major , also known as the Great Bear, is a constellation visible throughout the year in most of the northern hemisphere. It can best be seen in April...	11.77	50.2	M2.5	b	25			300			1998
BD+20°2457 BD+20°2457 BD+20°2457 is a 10th magnitude K-type bright giant star located between 320 to 980 light years away in the constellation of Leo. This star is very metal-poor, containing only 10% as enriched with elements heavier than hydrogen and helium as our sun, almost classifying this as a population II star...	Leo Leo (constellation) Leo is one of the constellations of the zodiac. Its name is Latin for lion. Its symbol is . Leo lies between dim Cancer to the west and Virgo to the east.-Stars:...	9.75	652	K2II	b BD+20°2457 b BD+20°2457 b is a brown dwarf located between 320 to 980 light years away in the constellation of Leo, orbiting the 10th magnitude K-type bright giant star BD+20°2457. It has mass 21.42 times more massive than Jupiter and the orbit takes 4% longer than Earth’s to go around the star...	21.42		379.63	1.45	0.15		2009
HD 89707	Hydra Hydra (constellation) Hydra is the largest of the 88 modern constellations, measuring 1303 square degrees. It has a long history, having been included among the 48 constellations listed by the 2nd century astronomer Ptolemy. It is commonly represented as a water snake...	7.19	81.54	G1V	b	54		298.25		0.95		1991
CT Chamaeleontis CT Chamaeleontis CT Chamaeleontis is a T Tauri star in the constellation of Chamaeleon. It has an apparent visual magnitude which varies between 12.31 and 12.43....	Chamaeleon Chamaeleon Chamaeleon is a small constellation in the southern sky. It is named after the chameleon, a form of lizard. It was first defined in the sixteenth century.-History:...	12.36	538	K7	b	17	2.2			440		2008
ChaHα8	Chamaeleon Chamaeleon Chamaeleon is a small constellation in the southern sky. It is named after the chameleon, a form of lizard. It was first defined in the sixteenth century.-History:...	20.1	522	M6.5	b	18		1590.9	1	0.49		2007
Xi Ursae Majoris B Xi Ursae Majoris Xi Ursae Majoris is a star system in the constellation Ursa Major. On May 2, 1780, Sir William Herschel discovered that this was a binary star system, making it the first such system ever discovered...	Ursa Major Ursa Major Ursa Major , also known as the Great Bear, is a constellation visible throughout the year in most of the northern hemisphere. It can best be seen in April...	4.73	25.11	F8.5V	b	37		3.98	0.06	0		1931
CD−33°7795	Hydra Hydra (constellation) Hydra is the largest of the 88 modern constellations, measuring 1303 square degrees. It has a long history, having been included among the 48 constellations listed by the 2nd century astronomer Ptolemy. It is commonly represented as a water snake...	11.37	163.08	M1	b	20			100			1998
NGC 4349-127 NGC 4349-127 NGC 4349-127 is a probable red giant star approximately 7,097 light-years away in the constellation of Crux. As a member of the open cluster NGC 4349 , it is located about 2000 parsecs from the Sun. Its mass is estimated at 3.9 times Solar, and its age is about 200 million years...	Crux Crux Crux is the smallest of the 88 modern constellations, but is one of the most distinctive. Its name is Latin for cross, and it is dominated by a cross-shaped asterism that is commonly known as the Southern Cross.-Visibility:...	7.4	7097	MIII?	b	19.8		677.8	2.38	0.19		2007
HD 110833	Canes Venatici Canes Venatici Canes Venatici is one of the 88 official modern constellations. It is a small northern constellation that was created by Johannes Hevelius in the 17th century. Its name is Latin for "hunting dogs", and the constellation is often depicted in illustrations as representing the dogs of Boötes the...	7.04	55.44	K3V	b	17		270.04	0.8	0.69		1996
HW Virginis HW Virginis HW Virginis, abbreviated HW Vir, is an eclipsing binary system approximately 590 light-years away in the constellation of Virgo. The system comprises an eclipsing B-type subdwarf star and red dwarf star...	Virgo Virgo (constellation) Virgo is one of the constellations of the zodiac. Its name is Latin for virgin, and its symbol is . Lying between Leo to the west and Libra to the east, it is the second largest constellation in the sky...	10.9	590	sdB+M	b	19.23		5786	5.30	0.46		2008
HD 112758	Virgo Virgo (constellation) Virgo is one of the constellations of the zodiac. Its name is Latin for virgin, and its symbol is . Lying between Leo to the west and Libra to the east, it is the second largest constellation in the sky...	7.56	53.81	K0V	b	35		103.22	0.35	0.16		1996
HD 131664 HD 131664 HD 131664 is an 8th magnitude G-type main sequence star located approximately 181 light-years away in the constellation of Apus.On October 26, 2008, a brown dwarf was discovered along with five other planets...	Apus Apus Apus is a faint constellation in the southern sky, first defined in the late 16th century. Its name means "no feet" in Greek, and it represents a bird-of-paradise . It is bordered by Triangulum Australe, Circinus, Musca, Chamaeleon, Octans, Pavo and Ara...	8.13	180.8	G3V	b	18.15		1951	3.17	0.638		2008
HD 136118 HD 136118 HD 136118 is a F-type main-sequence star located approximately 171 light-years away in the constellation of Serpens Cauda. It is an F-type dwarf and has apparent magnitude +6.94.- Brown dwarf companion :...	Serpens Serpens Serpens is a constellation of the northern hemisphere. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy and it remains one of the 88 modern constellations defined by the International Astronomical Union....	6.94	171	F9V	b HD 136118 b HD 136118 b is a brown dwarf located approximately 171 light-years away in the constellation of Serpens Cauda. This object had a minimum mass of 11.9 times that of Jupiter. Due to its high mass the planet is likely to be very hot and possibly glowing faintly...	42		1209	1.45	0.352	163.1	2002
HD 140913 HD 140913 HD 140913 is a star very much like our own Sun located in the constellation Corona Borealis 156 light years away.The space velocity components of this star are = .-Companion:...	Corona Borealis Corona Borealis Corona Borealis is a small constellation in the northern sky. Its name is Latin for "northern crown", a name inspired by its shape; its main stars form a semicircular arc. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy and remains one of the 88 modern...	8.07	156.42	G0V	b	46		147.94	0.54	0.61		1996
GQ Lupi	Lupus Lupus (constellation) Lupus is a constellation in the southern sky. Its name is Latin for wolf. Lupus was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations...	11.4	400	K7eV	b GQ Lupi b GQ Lupi b is a possible extrasolar planet orbiting the star GQ Lupi. Its discovery was announced in April 2005. Along with 2M1207b, this was one of the first extrasolar planet candidates to be directly imaged...	1-42	1.8		103			2005
UScoCTIO 108 UScoCTIO 108 UScoCTIO 108 is a binary system, approximately 470 light-years away in the Upper Scorpius OB association. The primary, UScoCTIO 108A, with mass around 0.06 solar masses, is a brown dwarf or low-mass red dwarf...	Scorpius Scorpius Scorpius, sometimes known as Scorpio, is one of the constellations of the zodiac. Its name is Latin for scorpion, and its symbol is . It lies between Libra to the west and Sagittarius to the east...		473	M7	b	14			670			2007
HD 149382 HD 149382 HD 149382 is a B-type subdwarf star approximately 242 light-years away from Sun in the constellation of Ophiuchus. In 2009, a substellar companion was announced orbiting the star...	Ophiuchus Ophiuchus Ophiuchus is a large constellation located around the celestial equator. Its name is from the Greek "serpent-bearer", and it is commonly represented as a man grasping the snake that is represented by the constellation Serpens. Ophiuchus was one of the 48 constellations listed by the 2nd-century...	8.95	241	B5D	b	15.5		2.391		0	39	2009
HD 162020 HD 162020 HD 162020 is an orange dwarf star in Scorpius constellation with a brown dwarf companion.- HD 162020 b :HD 162020 b is a brown dwarf with mass 15.0 MJ. The mass is minimum since inclination is not known. This planetar orbits very close to the star at a distance of 0.075 AU. Despite of this, it has...	Scorpius Scorpius Scorpius, sometimes known as Scorpio, is one of the constellations of the zodiac. Its name is Latin for scorpion, and its symbol is . It lies between Libra to the west and Sagittarius to the east...	9.18	101.95	K2V	b	15.0		8.428198	0.0751	0.277		2000
Nu Ophiuchi Nu Ophiuchi Nu Ophiuchi is a Class K0, third-magnitude star in the constellation Ophiuchus. Its closest stellar neighbour is the bright binary system Tau Ophiuchi, roughly 16.9 light years away from the star...	Ophiuchus Ophiuchus Ophiuchus is a large constellation located around the celestial equator. Its name is from the Greek "serpent-bearer", and it is commonly represented as a man grasping the snake that is represented by the constellation Serpens. Ophiuchus was one of the 48 constellations listed by the 2nd-century...	3.33	152.8	K0III	b	21.9		536				2004
HD 164427 HD 164427 164427 is a star in Telescopium constellation with a brown dwarf companion discovered in 2001 taking place in Australia.- HD 164427 b :HD 164427 b is a brown dwarf with a minimum mass of 46 times that of Jupiter. It orbits at nearly half an astronomical unit or Earth-to-Sun distance away from its...	Telescopium Telescopium Telescopium is a minor southern constellation created in the 18th century by Nicolas Louis de Lacaille, a French astronomer and student of the southern skies. Its name is a Latinized form of the Greek word for telescope....	6.89	127.52	G4IV	b	46		108.55	0.46	0.55		2000
HD 168443 HD 168443 HD 168443 is a yellow dwarf star of about the mass of our Sun. It is in the constellation of Serpens Cauda, 123 light years from our solar system. It is known to be orbited by one large planet and a brown dwarf. The brown dwarf takes 30 times longer to orbit the star than the gas giant planet....	Serpens Serpens Serpens is a constellation of the northern hemisphere. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy and it remains one of the 88 modern constellations defined by the International Astronomical Union....	6.92	123.5	G5	c	34		1739.5	2.87	0.228	150	2001
SCR 1845-6357 SCR 1845-6357 SCR 1845-6357 is a binary system, about 12.6 light-years away in the constellation Pavo. The primary is a faint red dwarf star. It has a brown dwarf companion.-SCR 1845-6357 A:...	Pavo Pavo (constellation) Pavo is a constellation in the southern sky. Its name is Latin for peacock. It is one of twelve constellations created by Petrus Plancius from the observations of Pieter Dirkszoon Keyser and Frederick de Houtman and it first appeared on a 35-cm diameter celestial globe published in 1597 in...	17.4	12.57	M8.5V	B	40-50			4.1			2006
COROT-3 COROT-3 COROT-3 is a white-yellow dwarf main sequence star hotter than our Sun. This star is located approximately 2200 light-years away in the constellation of Aquila...	Aquila Aquila (constellation) Aquila is a stellar constellation. Its name is Latin for 'eagle' and it is commonly represented as such. In mythology, Aquila was owned by the Roman god Jupiter and performed many tasks for him....	13.3	2220	G0V	b	21.66	1.01	4.2568	0.057	0	85.9	2008
15 Sagittae 15 Sagittae 15 Sagittae is a 6th magnitude star in the constellation Sagitta. In 2002, a brown dwarf, 15 Sge b, was discovered around 15 Sge.-15 Sagittae B:...	Sagitta	5.80	57.7	G1V	B	65			14			2002
HD 202206 HD 202206 HD 202206 is a yellow dwarf star approximately 151 light-years away in the constellation Capricornus. The star is orbited by two companions with substellar masses in a near-resonant configuration.- Distance, age and metallicity :...	Capricornus Capricornus Capricornus is one of the constellations of the zodiac; it is often called Capricorn, especially when referring to the corresponding astrological sign. Its name is Latin for "horned male goat" or "goat horn", and it is commonly represented in the form of a sea-goat: a mythical creature that is half...	8.08	151.14	G6V	b	17.4		255.87	0.83	0.435		2000
Epsilon Indi Epsilon Indi Epsilon Indi is a K-type main-sequence star approximately 12 light-years away in the constellation of Indus. Two brown dwarfs, found in 2003, orbit the star.- Observation :...	Indus Indus (constellation) Indus is a constellation in the southern sky. Created in the sixteenth century, it represents an Indian, a word that could refer at the time to any native of Asia or the Americas.-Notable features:...	4.69	11.8	K5V	Bb	28		15 y	2.65			2003
Epsilon Indi Epsilon Indi Epsilon Indi is a K-type main-sequence star approximately 12 light-years away in the constellation of Indus. Two brown dwarfs, found in 2003, orbit the star.- Observation :...	Indus Indus (constellation) Indus is a constellation in the southern sky. Created in the sixteenth century, it represents an Indian, a word that could refer at the time to any native of Asia or the Americas.-Notable features:...	4.69	11.8	K5V	Ba	47		1459 y				2003
HD 217580	Aquarius Aquarius (constellation) Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces. Its name is Latin for "water-bearer" or "cup-bearer", and its symbol is , a representation of water....	7.46	58.7	K4V	b	60		454.66	1	0.52		1994

Unconfirmed brown dwarfs

Here are 7 unconfirmed brown dwarfs orbiting stars.

Sorted by increasing right ascension
Right ascension
Right ascension is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. The other coordinate is the declination.-Explanation:...

of the parent star. Brown dwarfs within a system sorted by increasing orbital period
Orbital period
The orbital period is the time taken for a given object to make one complete orbit about another object.When mentioned without further qualification in astronomy this refers to the sidereal period of an astronomical object, which is calculated with respect to the stars.There are several kinds of...

.

Star Star A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...	Constellation Constellation In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....	App. mag. Apparent magnitude The apparent magnitude of a celestial body is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere...	Distance (ly Light-year A light-year, also light year or lightyear is a unit of length, equal to just under 10 trillion kilometres... )	Spectral type Stellar classification In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are most prominent in the light, giving an objective measure...	Brown dwarf Brown dwarf Brown dwarfs are sub-stellar objects which are too low in mass to sustain hydrogen-1 fusion reactions in their cores, which is characteristic of stars on the main sequence. Brown dwarfs have fully convective surfaces and interiors, with no chemical differentiation by depth...	Mass Mass Mass can be defined as a quantitive measure of the resistance an object has to change in its velocity.In physics, mass commonly refers to any of the following three properties of matter, which have been shown experimentally to be equivalent:... (M_J Jupiter mass Jupiter mass , is the unit of mass equal to the total mass of the planet Jupiter . Jupiter mass is used to describe masses of the gas giants, such as the outer planets and extrasolar planets. It is also used in describing brown dwarfs.... )	Radius Radius In classical geometry, a radius of a circle or sphere is any line segment from its center to its perimeter. By extension, the radius of a circle or sphere is the length of any such segment, which is half the diameter. If the object does not have an obvious center, the term may refer to its... (R_J)	Orbital period Orbital period The orbital period is the time taken for a given object to make one complete orbit about another object.When mentioned without further qualification in astronomy this refers to the sidereal period of an astronomical object, which is calculated with respect to the stars.There are several kinds of... (d Day A day is a unit of time, commonly defined as an interval equal to 24 hours. It also can mean that portion of the full day during which a location is illuminated by the light of the sun... )	Semimajor axis (AU Astronomical unit An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance.... )	Orbital eccentricity	Inclination Inclination Inclination in general is the angle between a reference plane and another plane or axis of direction.-Orbits:The inclination is one of the six orbital parameters describing the shape and orientation of a celestial orbit... (° Degree (angle) A degree , usually denoted by ° , is a measurement of plane angle, representing 1⁄360 of a full rotation; one degree is equivalent to π/180 radians... )	Discovery year
Gliese 22 B Gliese 22 Gliese 22, also catalogued V547 Cassiopeiae or shortened to Gl 22, is a hierarchical star system approximately 33 light-years away in the constellation of Cassiopeia. The system consists of two red dwarf stars, Gliese 22A and Gliese 22B in an outer orbit of about 320 years, and a brown dwarf,...	Cassiopeia Cassiopeia (constellation) Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty. Cassiopea was one of the 48 constellations listed by the 2nd century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations today...	10.38	326	M2.5V	b	16		~5500		0		2008
HD 3346 HD 3346 HD 3346, also known as V428 Andromedae, is an orange giant star approximately 655 light-years away in the constellation of Andromeda.- Possible planetary system :...	Andromeda Andromeda (constellation) Andromeda is a constellation in the northern sky. It is named after Andromeda, the princess in the Greek legend of Perseus who was chained to a rock to be eaten by the sea monster Cetus...	5.16	655.58	K5III	c	60		650	2.5			1996
OGLE-TR-109	Carina Carina (constellation) Carina is a constellation in the southern sky. Its name is Latin for the keel of a ship, and it was formerly part of the larger constellation of Argo Navis until that constellation was divided in three.-Stars:...	15.8	8450		b	<14	0.9	0.589128	0.016		77	2002
HD 100546 HD 100546 \|HD 100546 is a star 337.3 LY from Earth. It is orbited by an approximately 20 Mj planet at 6.5 AU.-HD 100546 B:Evidence for a planetary companion to HD 100546 was gathered using the UVES echelle spectrograph at the VLT in Chile. This confirms other data indicating a planetary companion...	Musca Musca Musca is one of the minor southern constellations. The constellation was one of twelve constellations created by Petrus Plancius from the observations of Pieter Dirkszoon Keyser and Frederick de Houtman and it first appeared on a 35-cm diameter celestial globe published in 1597 in Amsterdam by...	6.70	337.25	B9Vne	b	20			6.5?			2005
HD 104304	Virgo Virgo (constellation) Virgo is one of the constellations of the zodiac. Its name is Latin for virgin, and its symbol is . Lying between Leo to the west and Libra to the east, it is the second largest constellation in the sky...	5.54	42.1	G9	b	17.2		2752		0.38		2007
CM Draconis CM Draconis CM Draconis is an eclipsing binary system approximately 47 light-years away in the constellation of Draco . The system consists of two nearly identical red dwarf stars located in the constellation Draco. The two stars orbit each other with a period of 1.27 days with a separation of 2.7 million...	Draco Draco (constellation) Draco is a constellation in the far northern sky. Its name is Latin for dragon. Draco is circumpolar for many observers in the northern hemisphere...	12.90	48	M4	b	64		73	0.27			1998
HD 154857 HD 154857 \|- bgcolor="#FFFAFA"\| Equatorial [ g ] \|\| 54,7 m/s2HD 154857 is a yellow main-sequence star approximately 224 light years away in the constellation of Ara.-Planetary system:...	Ara Ara (constellation) Ara is a southern constellation situated between Scorpius and Triangulum Australe. Its name is Latin for "altar". Ara was one of the 48 Greek constellations described by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations defined by the International Astronomical...	7.25	220	G5V	c HD 154857 c HD 154857 c is an unconfirmed extrasolar planet located approximately 224 light-years away in the constellation of Ara, orbiting the star HD 154857. This planet takes at least 1900 days to orbit the star. It was discovered on 9 February 2007 by O’Toole in Australia using the method Doppler...	18.4		2900		>0.25		2007

Field brown dwarfs

The following has 4 'field' brown dwarfs, which do not orbit stars.

Sorted by increasing right ascension
Right ascension
Right ascension is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. The other coordinate is the declination.-Explanation:...

of the parent star. Brown dwarfs within a system sorted by increasing orbital period
Orbital period
The orbital period is the time taken for a given object to make one complete orbit about another object.When mentioned without further qualification in astronomy this refers to the sidereal period of an astronomical object, which is calculated with respect to the stars.There are several kinds of...

.

Brown dwarf Brown dwarf Brown dwarfs are sub-stellar objects which are too low in mass to sustain hydrogen-1 fusion reactions in their cores, which is characteristic of stars on the main sequence. Brown dwarfs have fully convective surfaces and interiors, with no chemical differentiation by depth...	Constellation Constellation In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....	App. mag. Apparent magnitude The apparent magnitude of a celestial body is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere...	Distance (ly Light-year A light-year, also light year or lightyear is a unit of length, equal to just under 10 trillion kilometres... )	Spectral type Stellar classification In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are most prominent in the light, giving an objective measure...	Mass Mass Mass can be defined as a quantitive measure of the resistance an object has to change in its velocity.In physics, mass commonly refers to any of the following three properties of matter, which have been shown experimentally to be equivalent:... (M_J Jupiter mass Jupiter mass , is the unit of mass equal to the total mass of the planet Jupiter . Jupiter mass is used to describe masses of the gas giants, such as the outer planets and extrasolar planets. It is also used in describing brown dwarfs.... )	Radius Radius In classical geometry, a radius of a circle or sphere is any line segment from its center to its perimeter. By extension, the radius of a circle or sphere is the length of any such segment, which is half the diameter. If the object does not have an obvious center, the term may refer to its... (R_J)	Discovery year
DEN 0255-4700 DEN 0255-4700 DENIS 0255-4700 is an extremely faint brown dwarf about 16 light years from the Solar System in the southern constellation of Eridanus. It is the closest spectral class L brown dwarf to the Earth. Its proximity to the Solar System was discovered by the RECONS group in 2006.-External links:*...	Eridanus Eridanus (constellation) Eridanus is a constellation. It is represented as a river; its name is the Ancient Greek name for the Po River. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations. It is the sixth largest of the modern...	22.92	16.2	L8	<80		2006
Teide 1 Teide 1 Teide 1 was the first brown dwarf to be verified in 1995. This brown dwarf is located in the Pleiades open star cluster located approximately 400 light years from Earth....	Taurus Taurus (constellation) Taurus is one of the constellations of the zodiac. Its name is a Latin word meaning 'bull', and its astrological symbol is a stylized bull's head:...		380	M8	55		1995
Cha 110913-773444 Cha 110913-773444 Cha 110913-773444 is an astronomical object surrounded by what appears to be a protoplanetary disk...	Chamaeleon Chamaeleon Chamaeleon is a small constellation in the southern sky. It is named after the chameleon, a form of lizard. It was first defined in the sixteenth century.-History:...	21.59	163	L	8	1.8	2005
OTS 44 OTS 44 OTS 44 is a brown dwarf about 550 light-years away in the constellation Chamaeleon. It is among the smallest known brown dwarfs.OTS 44 has a mass of about 15 times that of Jupiter, or about 1.5 % that of the Sun...	Chamaeleon Chamaeleon Chamaeleon is a small constellation in the southern sky. It is named after the chameleon, a form of lizard. It was first defined in the sixteenth century.-History:...		554	M9.5V	15		2005

External links

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Confirmed brown dwarfs orbiting primary stars

Unconfirmed brown dwarfs

Field brown dwarfs

See also

External links