HD 8673
Encyclopedia
HD 8673 is an F-type main sequence star approximately 125 light-year
s away in the constellation
of Andromeda
. It has an apparent magnitude
and absolute magnitude
of 6.31 and 3.40 respectively. In its orbit
, there is debate about the celestial object as to whether be an exoplanet or a brown dwarf
.
ranges from 10 to 18 Jupiter mass
. This 639-day object orbits at 236 Gm (1.58 AU
) away from its parent star HD 8673.
This planet or brown dwarf was discovered in Texas
in 2005 by Hatzes, who was the discoverer of Epsilon Eridani b
.
Light-year
A light-year, also light year or lightyear is a unit of length, equal to just under 10 trillion kilometres...
s away in the 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....
of 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...
. It has an apparent magnitude
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...
and absolute magnitude
Absolute magnitude
Absolute magnitude is the measure of a celestial object's intrinsic brightness. it is also the apparent magnitude a star would have if it were 32.6 light years away from Earth...
of 6.31 and 3.40 respectively. In its 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...
, there is debate about the celestial object as to whether be an exoplanet or a 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...
.
Possible planetary system
An unconfirmed celestial object is thought to be orbiting around HD 8673. The possible massMass
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:...
ranges from 10 to 18 Jupiter mass
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....
. This 639-day object orbits at 236 Gm (1.58 AU
Astronomical unit
An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance....
) away from its parent star HD 8673.
This planet or brown dwarf was discovered in Texas
Texas
Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...
in 2005 by Hatzes, who was the discoverer of Epsilon Eridani b
Epsilon Eridani b
Epsilon Eridani b is an unconfirmed extrasolar planet approximately 10 light-years away orbiting the star Epsilon Eridani, in the constellation of Eridanus .- Discovery :...
.