Apollo asteroids

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 (> 1 AU) but perihelion distances less than the Earth's aphelion distance (q < 1.017 AU).
As of November 2016, the steadily growing number of known Apollo asteroids has reached a total of 8,180 members. It is by far the largest group of near-Earth objects, compared to the Aten, Amor and Atira asteroids. Asteroids are not numbered until they have been observed at two or more oppositions. There are 1,472 Apollo asteroids that are large and close enough to Earth to be classified as s.
The closer their semi-major axis is to Earth's, the less eccentricity is needed for the orbits to cross. The February 15, 2013 Chelyabinsk meteor that exploded over the city of Chelyabinsk in the southern Urals region of Russia, injuring an estimated 1000 people with flying glass from broken windows, was an Apollo class asteroid.
== List ==
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
 	2016	NEOWISE 	
 	2014	CSS 	
 	2013	CSS 	
 	2013	CSS 	
 	2011	LINEAR 	(B)
 	2011	CSS–Mount Lemmon Survey 	
 	2010	LINEAR 	
 	2009	CSS 	
 	2009	Siding Spring Observatory, Australia 	
 	2008	LINEAR 	
 	2008	CSS 	
 	2008	CSS–Mount Lemmon Survey 	
 	2007	CSS 	
 	2007	CSS 	
 	2007	CSS 	
 	2007	CSS–Mount Lemmon Survey 	
 	2006	Spacewatch 	
 	2006	LINEAR 	
 	2006	Spacewatch 	
 	2005	R. S. McMillan, Steward Observatory, Kitt Peak, USA 	
 	2005	LONEOS 	
 	2005	Mount Lemmon Survey 	
 	2004	LINEAR 	
 	2004	LINEAR 	
 	2004	LINEAR 	
 	2003	James Whitney Young 	
 	2003	James Whitney Young 	
 	2002	LINEAR 	
 	2002	LINEAR 	
54509 YORP 	2000	LINEAR 	
 	1999	LINEAR 	
101955 Bennu 	1999	LINEAR (Bennu is the target of the OSIRIS-REx mission)	
 	1998	Spacewatch 	
 	1997	LINEAR 	
65803 Didymos 	1996	Spacewatch 	
69230 Hermes 	1937	Karl Reinmuth 	
 	1999	LINEAR 	
 	1998	LINEAR 	
 	1997	Spacewatch 	
25143 Itokawa 	1998	LINEAR 	
(136617) 1994 CC 	1994	Spacewatch 	
 	1996	R. H. McNaught, Siding Spring Observatory, Australia 	
6489 Golevka 	1991	Eleanor F. Helin 	
4769 Castalia 	1989	Eleanor F. Helin 	
4660 Nereus 	1982	Eleanor F. Helin 	
4581 Asclepius 	1989	Henry E. Holt, Norman G. Thomas 	
4486 Mithra 	1987	Eric Elst, Vladimir Shkodrov 	
14827 Hypnos 	1986	Carolyn S. Shoemaker, Eugene Merle Shoemaker 	
4197 Morpheus 	1982	Eleanor F. Helin, Eugene Merle Shoemaker 	
4183 Cuno 	1959	Cuno Hoffmeister 	
4179 Toutatis 	1989	Christian Pollas 	
4015 Wilson–Harrington  	1979	Eleanor F. Helin 	
3200 Phaethon 	1983	Simon F. Green, John K.Davies / IRAS 	
2063 Bacchus 	1977	Charles T. Kowal 	
1866 Sisyphus 	1972	Paul Wild 	
1620 Geographos 	1951	Albert George Wilson, Rudolph Minkowski 	
(29075) 1950 DA 	1950	Carl A. Wirtanen 	
1566 Icarus 	1949	Walter Baade 	
1685 Toro 	1948	Carl A. Wirtanen 	
2101 Adonis 	1936	Eugène Joseph Delporte 	
1862 Apollo 	1932	Karl Reinmuth 	
(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
(B) Classification:
: 2011 MD is classified as Amor, not Apollo asteroid by the MPC	(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
(B) Classification:
: 2011 MD is classified as Amor, not Apollo asteroid by the MPC	(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
(B) Classification:
: 2011 MD is classified as Amor, not Apollo asteroid by the MPC	(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
(B) Classification:
: 2011 MD is classified as Amor, not Apollo asteroid by the MPC
== References ==
 
Category:Asteroid belt