Latest revision as of 21:06, 21 February 2025
Template:Short description
File:Neo orbit types.jpg Common orbital subgroups of Near-Earth Objects (NEOs) The Apollo asteroids are a group of near-Earth asteroids named after 1862 Apollo , discovered by German astronomer Karl Reinmuth in the 1930s. They are Earth-crossing asteroids that have an orbital semi-major axis greater than that of the Earth (a > 1 AU ) but perihelion distances less than the Earth's aphelion distance (q < 1.017 AU).<ref name="NEO-groups" /><ref name="Wolfram-Apollo" />
Template:As of , the number of known Apollo asteroids is 21,083, making the class the largest group of near-Earth objects (cf . the Aten , Amor and Atira asteroids), of which 1,742 are numbered (asteroids are not numbered until they have been observed at two or more oppositions ), 81 are named, and 2,130 are identified as potentially hazardous asteroids .<ref name="ssd-jpl">Template:Cite web </ref><ref>Template:Cite web </ref>
The closer their semi-major axis is to Earth's, the less eccentricity is needed for the orbits to cross. The Chelyabinsk meteor , that exploded over the city of Chelyabinsk in the southern Urals region of Russia on February 15, 2013, injuring an estimated 1,500 people with flying glass from broken windows, was an Apollo-class asteroid .<ref name="USA-Today-Chelyabinsk" /><ref name="NewScientist-Chelyabinsk" />
The largest known Apollo asteroid is 1866 Sisyphus , with a diameter of about 8.5 km. Examples of known Apollo asteroids include:
Designation
Year
Discoverer/First observed (A)
Ref
Template:Mpl 2024
ATLAS-SAAO Template:MPC
Template:Mpl 2019
ATLAS-HKO Template:MPC
Template:Mpl 2016
NEOWISE Template:MPC
Template:Mpl 2014
CSS Template:MPC
Template:Mpl 2013
CSS
Template:MPC
Template:Mpl 2013
CSS
Template:MPC
Template:Mpl 2011
LINEAR Template:MPC (B)
Template:Mpl 2011
CSS–Mount Lemmon Survey
Template:MPC
Template:Mpl 2010
LINEAR
Template:MPC
Template:Mpl 2009
CSS
Template:MPC
Template:Mpl 2009
Siding Spring Observatory, Australia
Template:MPC
Template:Mpl 2008
LINEAR
Template:LoMP
Template:Mpl 2008
CSS
Template:MPC
Template:Mpl 2008
CSS–Mount Lemmon Survey
Template:MPC
Template:Mpl 2007
CSS Template:MPC
Template:Mpl 2007
CSS
Template:MPC
Template:Mpl 2007
CSS
Template:MPC
Template:Mpl 2007
CSS–Mount Lemmon Survey
Template:MPC
Template:Mpl 2006
Spacewatch Template:LoMP
Template:Mpl 2006
LINEAR
Template:LoMP
Template:Mpl 2006
Spacewatch
Template:LoMP
Template:Mpl 2005
R. S. McMillan, Steward Observatory, Kitt Peak, USA
Template:LoMP
Template:Mpl 2005
Mount Lemmon Survey Template:MPC
Template:Mpl 2005
LONEOS Template:MPC
Template:Mpl 2004
LINEAR
Template:MPC
Template:Mpl 2004
LINEAR
Template:LoMP
Template:Mpl 2004
LINEAR
Template:LoMP
Template:Mpl 2004
LINEAR
Template:LoMP
Template:Mpl 2003
James Whitney Young Template:MPC
Template:Mpl 2003
James Whitney Young
Template:MPC
Template:Mpl 2002
LINEAR
Template:LoMP
Template:Mpl 2002
LINEAR
Template:LoMP
54509 YORP 2000
LINEAR Template:LoMP
162173 Ryugu 1999
LINEAR Template:LoMP
Template:Mpl 1999
LINEAR Template:LoMP
101955 Bennu 1999
LINEAR (Bennu is the target of the OSIRIS-REx mission)
Template:LoMP
Template:Mpl 1998
Spacewatch
Template:MPC
Template:Mpl 1997
LINEAR Template:LoMP
65803 Didymos 1996
Spacewatch Template:LoMP
69230 Hermes 1937
Karl Reinmuth Template:LoMP
Template:Mpl 1999
LINEAR
Template:LoMP
Template:Mpl 1998
LINEAR
Template:LoMP
Template:Mpl 1997
Spacewatch
Template:LoMP
25143 Itokawa 1998
LINEAR
Template:LoMP
(136617) 1994 CC 1994
Spacewatch Template:LoMP
Template:Mpl 1996
R. H. McNaught, Siding Spring Observatory, Australia
Template:LoMP
6489 Golevka 1991
Eleanor F. Helin Template:LoMP
4769 Castalia 1989
Eleanor F. Helin
Template:LoMP
4660 Nereus 1982
Eleanor F. Helin
Template:LoMP
4581 Asclepius 1989
Henry E. Holt , Norman G. Thomas Template:LoMP
4486 Mithra 1987
Eric Elst , Vladimir Shkodrov Template:LoMP
14827 Hypnos 1986
Carolyn S. Shoemaker , Eugene Merle Shoemaker Template:LoMP
4197 Morpheus 1982
Eleanor F. Helin , Eugene Merle Shoemaker Template:LoMP
4183 Cuno 1959
Cuno Hoffmeister Template:LoMP
4179 Toutatis 1989
Christian Pollas Template:LoMP
4015 Wilson–Harrington 1979
Eleanor F. Helin Template:LoMP
3200 Phaethon 1983
Simon F. Green , John K.Davies / IRAS Template:LoMP
2063 Bacchus 1977
Charles T. Kowal Template:LoMP
1866 Sisyphus 1972
Paul Wild Template:LoMP
1620 Geographos 1951
Albert George Wilson , Rudolph Minkowski Template:LoMP
(29075) 1950 DA 1950
Carl A. Wirtanen Template:LoMP
1566 Icarus 1949
Walter Baade Template:LoMP
1685 Toro 1948
Carl A. Wirtanen Template:LoMP
2101 Adonis 1936
Eugène Joseph Delporte Template:LoMP
1862 Apollo 1932
Karl Reinmuth Template:LoMP
(A) Discoverer :A discoverer is determined by the MPC when the object is numbered. For unnumbered bodies, the table gives the "first observer".
LINEAR: Lincoln Near-Earth Asteroid Research
CSS : Catalina Sky Survey
Spacewatch , on Kitt Peak, near Tucson, Arizona<ref>Template:Citation </ref>(B) Classification :
2011 MD is classified as Amor, not Apollo asteroid by the MPC
Template:Reflist
Template:Asteroids
Template:Small Solar System bodies
