Apollo asteroid

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Apollo asteroid

The Apollo asteroids are a group of near-Earth asteroids named after 1862 Apollo

1862 Apollo

1862 Apollo is a Q-type asteroid, discovered by Karl Reinmuth in 1932, but lost and not recovered until 1973. It is named after the Greek god Apollo....
, the first asteroid

Asteroid

Asteroids, sometimes called minor planets or planetoids, are small Solar System bodies in orbit around the Sun, smaller than planets but larger than meteoroids....
of this group to be discovered by Karl Wilhelm Reinmuth

Karl Wilhelm Reinmuth

Karl Wilhelm Reinmuth was a German astronomer.He was a prolific discoverer of asteroids , beginning with 796 Sarita in 1914, working at the Landessternwarte Heidelberg-K?nigstuhl astronomical observatory on the K?nigstuhl hill above Heidelberg, Germany from 1912 to 1957....
. They are Earth-crosser asteroid

Earth-crosser asteroid

An Earth-crosser asteroid is a Near-Earth asteroid whose orbit crosses that of Earth. The known numbered Earth-crossers are listed here. Those Earth-crossers whose semimajor axis are smaller than Earth's are Aten asteroids; the remaining ones are Apollo asteroids....
s that have orbital semi-major axes greater than that of the Earth

Earth

Earth is the third planet from the Sun. Earth is the largest of the terrestrial planets in the Solar System in diameter, mass and density. It is also referred to as the World and Wiktionary:Terra.Note that by International Astronomical Union convention, the term "Terra" is used for naming extensive land masses, rather...
(> 1 AU

Astronomical unit

An astronomical unit is a unit of length based on the mean distance from the Earth to the Sun. The precise value of the AU is currently accepted as 149,597,870,691 Plus-minus sign 6 metres ....
. Some can get very close to the Earth, making them a potential threat to our planet (the closer their semi-major axis is to Earth's, the less eccentricity is needed for the orbit

ORBit

ORBit is a Common Object Request Broker Architecture 2.4 compliant Object Request Broker . It features mature C , C++ and Python bindings, and less developed bindings for Perl, Lisp , Pascal , Ruby , and Tcl....
s to cross).

The largest known Apollo asteroid is 1866 Sisyphus

1866 Sisyphus

1866 Sisyphus is an Apollo asteroid which, at approximately 10 km in diameter, is the largest of the Earth-crosser asteroid. It is comparable in size to the Chicxulub Crater object whose impact may have Cretaceous-Tertiary extinction event the dinosaurs....
, with a diameter of about 10 km.

Well-known Apollo asteroids include: class="wikitable">

Name

Year

Discoverer

2008

Catalina Sky Survey

Catalina Sky Survey is a project to discover comets and asteroids, and to search for Near-Earth objects. More specifically, to search for potentially hazardous asteroids , that may pose a threat of Impact event....

2007

Catalina Sky Survey

2007

Andrea Boattini

Andrea Boattini is an Italian astronomer, a prolific discoverer of asteroids and comets.After developing a growing interest in minor planets, he graduated in 1996 from the University of Bologna with a thesis on near-Earth objects ....

2006

Spacewatch

Spacewatch is a project at the University of Arizona that specializes in the study of minor planets, including various types of asteroids and comets....

2004

LINEAR

Linear

The word linear comes from the Latin word linearis, which means created by lines.In mathematics, a linear map or function f is a function which satisfies the following two properties......

2004

LINEAR

Linear

The word linear comes from the Latin word linearis, which means created by lines.In mathematics, a linear map or function f is a function which satisfies the following two properties......

2002

LINEAR

Linear

The word linear comes from the Latin word linearis, which means created by lines.In mathematics, a linear map or function f is a function which satisfies the following two properties......

1999

LINEAR

Linear

The word linear comes from the Latin word linearis, which means created by lines.In mathematics, a linear map or function f is a function which satisfies the following two properties......

1998

Spacewatch

Spacewatch is a project at the University of Arizona that specializes in the study of minor planets, including various types of asteroids and comets....

1997

LINEAR

Linear

The word linear comes from the Latin word linearis, which means created by lines.In mathematics, a linear map or function f is a function which satisfies the following two properties......

69230 Hermes

69230 Hermes is an Apollo asteroid, Mars-crosser asteroid and Venus-crosser asteroid that passed Earth at about twice the distance of the Moon on October 30, 1937....

1937

Karl Reinmuth

1999

LINEAR

Linear

The word linear comes from the Latin word linearis, which means created by lines.In mathematics, a linear map or function f is a function which satisfies the following two properties......

1998

LINEAR

Linear

The word linear comes from the Latin word linearis, which means created by lines.In mathematics, a linear map or function f is a function which satisfies the following two properties......

1997

Spacewatch

Spacewatch is a project at the University of Arizona that specializes in the study of minor planets, including various types of asteroids and comets....

(29075) 1950 DA

1950 DA is a near Earth asteroid. It is notable for having the highest known probability of Impact event Earth, according to the Palermo Technical Impact Hazard Scale ....

1950

Carl A. Wirtanen

Carl Alvar Wirtanen was an United States astronomer who worked at Lick Observatory.He discovered periodic comet 46P/Wirtanen, as well as eight asteroids, including notably the Apollo asteroid 1950 DA, which may have a non-negligible probability of impacting the earth in the year 2880....

25143 Itokawa

25143 Itokawa is an Apollo asteroid and Mars-crosser asteroid. It was the first asteroid to be the target of a sample return mission, the Japanese space exploration Hayabusa....

1998

LINEAR

Linear

The word linear comes from the Latin word linearis, which means created by lines.In mathematics, a linear map or function f is a function which satisfies the following two properties......

6489 Golevka

6489 Golevka is an Apollo asteroid, Mars-crosser asteroid and Alinda family, discovered in 1991 by Eleanor F. Helin.Its name has a complicated origin....

1991

Eleanor F. Helin

Eleanor Francis Helin was an American astronomer. She was principal investigator of the Near Earth Asteroid Tracking program of NASA's Jet Propulsion Laboratory....

4769 Castalia

The asteroid 4769 Castalia was the first asteroid to be modeled by radar imaging. It is an Apollo asteroid, Mars-crosser asteroid and Venus-crosser asteroid....

1989

Eleanor F. Helin

Eleanor Francis Helin was an American astronomer. She was principal investigator of the Near Earth Asteroid Tracking program of NASA's Jet Propulsion Laboratory....

4660 Nereus

File:Nereus.jpg'4660 Nereus' is a small asteroid, discovered by Eleanor F. Helin on February 28, 1982. It is named after Nereus, a Titan in Greek mythology....

1982

Eleanor F. Helin

Eleanor Francis Helin was an American astronomer. She was principal investigator of the Near Earth Asteroid Tracking program of NASA's Jet Propulsion Laboratory....

4581 Asclepius

'4581 Asclepius' is a small asteroid of the Apollo asteroid that can approach Earth?s orbit to within 600,000 km; it was discovered in 1989 by the American astronomers Henry E....

1989

Henry E. Holt

Henry E. Holt is an American astronomer.He has discovered numerous asteroids. He is also a co-discoverer of periodic comets 121P/Shoemaker-Holt, 127P/Holt-Olmstead and 128P/Shoemaker-Holt....
, Norman G. Thomas

Norman G. Thomas

Norman G. Thomas is an United States astronomer.He worked at Lowell Observatory using the blink comparator alongside Robert Burnham, Jr., author of the famous three-volume Celestial Handbook....

4486 Mithra

4486 Mithra is an Apollo asteroid and Mars-crosser asteroid. It was discovered by Eric Elst and Vladimir Shkodrov on September 22, 1987. It is named after Mithra, Indo-Iranian god of light....

1987

Eric Elst, Vladimir Shkodrov

Vladimir Shkodrov

Vladimir Georgiev Shkodrov is a Bulgarian astronomer.Shkodrov has discovered a number of asteroids, including the Apollo asteroid 4486 Mithra, which he and Eric Walter Elst discovered on September 22, 1987....

(4197) 1982 TA

1982 TA was discovered on October 11, 1982 by Eleanor F. Helin and Eugene Shoemaker. It is an Apollo asteroid, Mars-crosser asteroid and Venus-crosser asteroid, only 1.7 km in diameter....

1982

Eleanor F. Helin

Eleanor Francis Helin was an American astronomer. She was principal investigator of the Near Earth Asteroid Tracking program of NASA's Jet Propulsion Laboratory....
, Eugene Shoemaker

4183 Cuno

4183 Cuno is an Apollo asteroid, Mars-crosser asteroid and Venus-crosser asteroid. It was discovered in 1959 by Cuno Hoffmeister, from whom the asteroid takes its name....

1959

Cuno Hoffmeister

Cuno Hoffmeister was a Germany astronomerand founder of Sonneberg Observatory.Born in Sonneberg in 1892, Hoffmeister obtained his first telescope in 1905 and became an avid amateur astronomer....

4179 Toutatis

4179 Toutatis/1989 AC is an Apollo asteroid, Alinda asteroid, and Mars-crosser asteroid with a Chaos theory orbit produced by a 3:1 orbital resonance with the planet Jupiter and 1:4 resonance with the planet Earth....

1989

Christian Pollas

Christian Pollas is a France astronomer.He has discovered tens of asteroids, some co-discovered with Eric W. Elst, including notably the Aten asteroid 1989 UQ, the Apollo asteroid 4179 Toutatis, and the Amor asteroid 1990 VB....

4015 Wilson-Harrington

1979

Eleanor F. Helin

Eleanor Francis Helin was an American astronomer. She was principal investigator of the Near Earth Asteroid Tracking program of NASA's Jet Propulsion Laboratory....

3200 Phaethon

3200 Phaethon is an Apollo asteroid and an extinct comet.Simon F. Green and John K. Davies, while searching Infrared Astronomical Satellite data for moving objects, discovered 3200 Phaethon in images from October 11, 1983....

1983

Simon F. Green

Dr. Simon F. Green is an astronomy. He is a Senior Lecturer in Planetary and Space Science at the Open University. He specializes in the study of asteroids and trans-Neptunian objects, and for a long time worked with the IRAS satellite to detect fast moving objects....
, John K.

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Encyclopedia

The Apollo asteroids are a group of near-Earth asteroids named after 1862 Apollo

1862 Apollo

1862 Apollo is a Q-type asteroid, discovered by Karl Reinmuth in 1932, but lost and not recovered until 1973. It is named after the Greek god Apollo....
, the first asteroid

Asteroid

Karl Wilhelm Reinmuth

Earth-crosser asteroid

Earth

Astronomical unit

ORBit

1866 Sisyphus

Name	Year	Discoverer
	2008	Catalina Sky Survey Catalina Sky Survey Catalina Sky Survey is a project to discover comets and asteroids, and to search for Near-Earth objects. More specifically, to search for potentially hazardous asteroids , that may pose a threat of Impact event....
	2007	Catalina Sky Survey Catalina Sky Survey Catalina Sky Survey is a project to discover comets and asteroids, and to search for Near-Earth objects. More specifically, to search for potentially hazardous asteroids , that may pose a threat of Impact event....
	2007	Andrea Boattini Andrea Boattini Andrea Boattini is an Italian astronomer, a prolific discoverer of asteroids and comets.After developing a growing interest in minor planets, he graduated in 1996 from the University of Bologna with a thesis on near-Earth objects ....
	2006	Spacewatch Spacewatch Spacewatch is a project at the University of Arizona that specializes in the study of minor planets, including various types of asteroids and comets....
	2004	LINEAR Linear The word linear comes from the Latin word linearis, which means created by lines.In mathematics, a linear map or function f is a function which satisfies the following two properties......
	2004	LINEAR Linear The word linear comes from the Latin word linearis, which means created by lines.In mathematics, a linear map or function f is a function which satisfies the following two properties......
	2002	LINEAR Linear The word linear comes from the Latin word linearis, which means created by lines.In mathematics, a linear map or function f is a function which satisfies the following two properties......
	1999	LINEAR Linear The word linear comes from the Latin word linearis, which means created by lines.In mathematics, a linear map or function f is a function which satisfies the following two properties......
	1998	Spacewatch Spacewatch Spacewatch is a project at the University of Arizona that specializes in the study of minor planets, including various types of asteroids and comets....
	1997	LINEAR Linear The word linear comes from the Latin word linearis, which means created by lines.In mathematics, a linear map or function f is a function which satisfies the following two properties......
69230 Hermes 69230 Hermes 69230 Hermes is an Apollo asteroid, Mars-crosser asteroid and Venus-crosser asteroid that passed Earth at about twice the distance of the Moon on October 30, 1937....	1937	Karl Reinmuth
	1999	LINEAR Linear The word linear comes from the Latin word linearis, which means created by lines.In mathematics, a linear map or function f is a function which satisfies the following two properties......
	1998	LINEAR Linear The word linear comes from the Latin word linearis, which means created by lines.In mathematics, a linear map or function f is a function which satisfies the following two properties......
	1997	Spacewatch Spacewatch Spacewatch is a project at the University of Arizona that specializes in the study of minor planets, including various types of asteroids and comets....
(29075) 1950 DA (29075) 1950 DA 1950 DA is a near Earth asteroid. It is notable for having the highest known probability of Impact event Earth, according to the Palermo Technical Impact Hazard Scale ....	1950	Carl A. Wirtanen Carl A. Wirtanen Carl Alvar Wirtanen was an United States astronomer who worked at Lick Observatory.He discovered periodic comet 46P/Wirtanen, as well as eight asteroids, including notably the Apollo asteroid 1950 DA, which may have a non-negligible probability of impacting the earth in the year 2880....
25143 Itokawa 25143 Itokawa 25143 Itokawa is an Apollo asteroid and Mars-crosser asteroid. It was the first asteroid to be the target of a sample return mission, the Japanese space exploration Hayabusa....	1998	LINEAR Linear The word linear comes from the Latin word linearis, which means created by lines.In mathematics, a linear map or function f is a function which satisfies the following two properties......
6489 Golevka 6489 Golevka 6489 Golevka is an Apollo asteroid, Mars-crosser asteroid and Alinda family, discovered in 1991 by Eleanor F. Helin.Its name has a complicated origin....	1991	Eleanor F. Helin Eleanor F. Helin Eleanor Francis Helin was an American astronomer. She was principal investigator of the Near Earth Asteroid Tracking program of NASA's Jet Propulsion Laboratory....
4769 Castalia 4769 Castalia The asteroid 4769 Castalia was the first asteroid to be modeled by radar imaging. It is an Apollo asteroid, Mars-crosser asteroid and Venus-crosser asteroid....	1989	Eleanor F. Helin Eleanor F. Helin Eleanor Francis Helin was an American astronomer. She was principal investigator of the Near Earth Asteroid Tracking program of NASA's Jet Propulsion Laboratory....
4660 Nereus 4660 Nereus File:Nereus.jpg'4660 Nereus' is a small asteroid, discovered by Eleanor F. Helin on February 28, 1982. It is named after Nereus, a Titan in Greek mythology....	1982	Eleanor F. Helin Eleanor F. Helin Eleanor Francis Helin was an American astronomer. She was principal investigator of the Near Earth Asteroid Tracking program of NASA's Jet Propulsion Laboratory....
4581 Asclepius 4581 Asclepius '4581 Asclepius' is a small asteroid of the Apollo asteroid that can approach Earth?s orbit to within 600,000 km; it was discovered in 1989 by the American astronomers Henry E....	1989	Henry E. Holt Henry E. Holt Henry E. Holt is an American astronomer.He has discovered numerous asteroids. He is also a co-discoverer of periodic comets 121P/Shoemaker-Holt, 127P/Holt-Olmstead and 128P/Shoemaker-Holt.... , Norman G. Thomas Norman G. Thomas Norman G. Thomas is an United States astronomer.He worked at Lowell Observatory using the blink comparator alongside Robert Burnham, Jr., author of the famous three-volume Celestial Handbook....
4486 Mithra 4486 Mithra 4486 Mithra is an Apollo asteroid and Mars-crosser asteroid. It was discovered by Eric Elst and Vladimir Shkodrov on September 22, 1987. It is named after Mithra, Indo-Iranian god of light....	1987	Eric Elst, Vladimir Shkodrov Vladimir Shkodrov Vladimir Georgiev Shkodrov is a Bulgarian astronomer.Shkodrov has discovered a number of asteroids, including the Apollo asteroid 4486 Mithra, which he and Eric Walter Elst discovered on September 22, 1987....
(4197) 1982 TA (4197) 1982 TA 1982 TA was discovered on October 11, 1982 by Eleanor F. Helin and Eugene Shoemaker. It is an Apollo asteroid, Mars-crosser asteroid and Venus-crosser asteroid, only 1.7 km in diameter....	1982	Eleanor F. Helin Eleanor F. Helin Eleanor Francis Helin was an American astronomer. She was principal investigator of the Near Earth Asteroid Tracking program of NASA's Jet Propulsion Laboratory.... , Eugene Shoemaker
4183 Cuno 4183 Cuno 4183 Cuno is an Apollo asteroid, Mars-crosser asteroid and Venus-crosser asteroid. It was discovered in 1959 by Cuno Hoffmeister, from whom the asteroid takes its name....	1959	Cuno Hoffmeister Cuno Hoffmeister Cuno Hoffmeister was a Germany astronomerand founder of Sonneberg Observatory.Born in Sonneberg in 1892, Hoffmeister obtained his first telescope in 1905 and became an avid amateur astronomer....
4179 Toutatis 4179 Toutatis 4179 Toutatis/1989 AC is an Apollo asteroid, Alinda asteroid, and Mars-crosser asteroid with a Chaos theory orbit produced by a 3:1 orbital resonance with the planet Jupiter and 1:4 resonance with the planet Earth....	1989	Christian Pollas Christian Pollas Christian Pollas is a France astronomer.He has discovered tens of asteroids, some co-discovered with Eric W. Elst, including notably the Aten asteroid 1989 UQ, the Apollo asteroid 4179 Toutatis, and the Amor asteroid 1990 VB....
4015 Wilson-Harrington	1979	Eleanor F. Helin Eleanor F. Helin Eleanor Francis Helin was an American astronomer. She was principal investigator of the Near Earth Asteroid Tracking program of NASA's Jet Propulsion Laboratory....
3200 Phaethon 3200 Phaethon 3200 Phaethon is an Apollo asteroid and an extinct comet.Simon F. Green and John K. Davies, while searching Infrared Astronomical Satellite data for moving objects, discovered 3200 Phaethon in images from October 11, 1983....	1983	Simon F. Green Simon F. Green Dr. Simon F. Green is an astronomy. He is a Senior Lecturer in Planetary and Space Science at the Open University. He specializes in the study of asteroids and trans-Neptunian objects, and for a long time worked with the IRAS satellite to detect fast moving objects.... , John K. Davies / IRAS IRAS The Infrared Astronomical Satellite was the first-ever space-based observatory to perform a astronomical survey of the entire sky at infrared wavelengths....
2101 Adonis 2101 Adonis 2101 Adonis was one of the first near-Earth asteroids to be discovered. It was discovered by Eugene Delporte in 1936 and named after Adonis, the beautiful youth with whom the goddess Venus fell in love....	1936	Eugène Joseph Delporte Eugène Joseph Delporte Eug?ne Joseph Delporte was a Belgium astronomer....
2063 Bacchus 2063 Bacchus The Apollo asteroid, Venus-crosser asteroid and Mars-crosser asteroid 2063 Bacchus was discovered on April 24, 1977 by Charles T. Kowal at the Palomar Observatory....	1977	Charles T. Kowal Charles T. Kowal Charles Thomas Kowal is an American astronomer.He discovered two natural satellite of Jupiter : Leda in 1974 and Themisto in 1975, although the latter was lost and not rediscovered until 2000....
1866 Sisyphus 1866 Sisyphus 1866 Sisyphus is an Apollo asteroid which, at approximately 10 km in diameter, is the largest of the Earth-crosser asteroid. It is comparable in size to the Chicxulub Crater object whose impact may have Cretaceous-Tertiary extinction event the dinosaurs....	1972	Paul Wild Paul Wild (Swiss astronomer) Professor Paul Wild of Berne, Switzerland, is an astronomer who discovered numerous comets and asteroids....
1862 Apollo 1862 Apollo 1862 Apollo is a Q-type asteroid, discovered by Karl Reinmuth in 1932, but lost and not recovered until 1973. It is named after the Greek god Apollo....	1932	Karl Reinmuth
1685 Toro 1685 Toro Sometimes called "Earth's second satellite" due to resonance, 1685 Toro is an asteroid discovered by Carl A. Wirtanen in 1948. It orbits the Sun in an 8:5 resonance with Earth, and a 13:5 resonance with Venus....	1948	Carl A. Wirtanen Carl A. Wirtanen Carl Alvar Wirtanen was an United States astronomer who worked at Lick Observatory.He discovered periodic comet 46P/Wirtanen, as well as eight asteroids, including notably the Apollo asteroid 1950 DA, which may have a non-negligible probability of impacting the earth in the year 2880....
1620 Geographos 1620 Geographos The asteroid 1620 Geographos was discovered on September 14, 1951 at the Palomar Observatory by Albert Wilson and Rudolph Minkowski. It was originally given the provisional designation 1951 RA....	1951	Albert George Wilson Albert George Wilson Albert George Wilson is an United States astronomer.He was born in Houston, Texas. He received his Ph.D. in mathematics from Caltech in 1947; his thesis title was Axially Symmetric Thermal Stresses in a Semi-Infinite Solid.... , Rudolph Minkowski Rudolph Minkowski Rudolph Minkowski was a German-American astronomer. His father was the physiologist Oskar Minkowski. His uncle was Hermann Minkowski.Rudolph studied supernovae and, together with Walter Baade, divided them into two classes based on their spectral characteristics....
1566 Icarus 1566 Icarus 1566 Icarus is an Apollo asteroid whose unusual characteristic is that at perihelion it is closer to the Sun than Mercury ; it is said to be a Mercury-crosser asteroid....	1949	Walter Baade Walter Baade Wilhelm Heinrich Walter Baade was a Germany astronomer who emigrated to the USA in 1931....

Apollo asteroid

See also

External links