This is a list of Aten asteroids, a group of near-Earth objects., there are 1125 known Atens, most of which remain provisionally designated without a number, as they have not been observed at two or more oppositions. The list is divided into named members, brightest, notable and other record holding Aten asteroids. For a list of existing articles, see Aten asteroids (category).
, a total of fourteen Aten asteroids have received a name. They are listed in chronological order of discovery.
| Number | Name | Year | Discoverer | ||
|---|---|---|---|---|---|
| 2062 | align=center | 1976 | Eleanor F. Helin | ||
| 2340 | align=center | 1976 | Charles T. Kowal | ||
| 2100 | align=center | 1978 | Eleanor F. Helin | ||
| 3362 | align=center | 1984 | R. Scott Dunbar, Maria A. Barucci | ||
| 3554 | align=center | 1986 | Carolyn S. Shoemaker, Eugene M. Shoemaker | ||
| 3753 | align=center | 1986 | J. Duncan Waldron | ||
| 5381 | align=center | 1991 | Carolyn S. Shoemaker | ||
| 136818 | align=center | 1997 | Roy Tucker | ||
| 326290 | align=center | 1998 | Roy Tucker | ||
| 66391 | align=center | 1999 | LINEAR | ||
| 524522 | align=center | 2002 | |||
| 99942 | align=center | 2004 | Roy Tucker, David J. Tholen and Fabrizio Bernardi | ||
| 398188 | align=center | 2010 | |||
| 367943 | align=center | 2012 | Observatorio Astronómico de La Sagra (OAM) |
The February 15, 2013 Earth encounter shortened 367943 Duende orbital period to about 317 days, changing its orbital class from Apollo to Aten.
The following lists Aten asteroids thought to be larger than 2 kilometers across. Assuming an albedo of 0.15, this converts to an absolute magnitude of about 16.2
| Designation | Discovery date | Absolute magnitude | Diameter (km) | Catalog | |
|---|---|---|---|---|---|
| 1998/10/13 | 14.5 | ||||
| 1999/04/20 | 14.5 | ||||
| 1986/10/10 | 15.6 | ||||
| 2000/03/15 | 15.8 | ||||
| 2000/07/10 | 15.8 | ||||
| 1986/03/04 | 15.82 | ||||
| 2000/09/20 | 16.0 | ||||
| 1978/09/10 | 16.05 | ||||
| 1998/12/01 | 16.2 |
| width=135 | Name ! | width=40 | Year ! | Discoverer A | Catalog |
|---|---|---|---|---|---|
| align=center | 1990 | ||||
| align=center | 1992 | ||||
| align=center | 1998 | LINEAR | |||
| align=center | 1989 | ||||
| align=center | 1998 | LINEAR | |||
| align=center | 1998 | LINEAR | |||
| align=center | 1999 | LINEAR | |||
| align=center | 1999 | LINEAR | |||
| align=center | 2001 | LINEAR | |||
| align=center | 1998 | LINEAR | |||
| align=center | 1999 | LINEAR | |||
| align=center | 1999 | ||||
| align=center | 2000 | LINEAR | |||
| align=center | 2000 | LINEAR | |||
| align=center | 2000 | LINEAR | |||
| align=center | 2000 | LINEAR | |||
| align=center | 2001 | LINEAR | |||
| align=center | 1998 | ||||
| align=center | 1989 | ||||
| align=center | 2000 | LINEAR | |||
| align=center | 2002 | LINEAR | |||
| align=center | 2003 | LINEAR | |||
| align=center | 2004 | LINEAR | |||
| align=center | 2004 | LINEAR | |||
| align=center | 2013 | ||||
| align=center | 2013 | ||||
| align=center | 2014 | ||||
| align=center | 2014 | ||||
| (A) LINEAR: Lincoln Near-Earth Asteroid Research |
The following is a list of current records for Aten asteroids
| Discovery Records | |||||||
|---|---|---|---|---|---|---|---|
| align=left width=185 | Record | align=left width=175 | Object | align=left colspan=2 | Date | ||
| First Detected | 5 December 1954 | ||||||
| First Confirmed | 7 January 1976 | ||||||
| Physical Records | |||||||
| align=left | Record | align=left | Object | align=left | Absolute magnitude | align=left | Diameter |
| Brightest | align=center | 14.5 | align=center | 4.3 km | |||
| Brightest | align=center | 14.7 | align=center | 3.6 km | |||
| Brightest | align=center | 15.1 | align=center | 3.3 km | |||
| Smallest | align=center | 18.3 | align=center | 700 m | |||
| Dimmest | align=center | 29.1 | align=center | 5 m | |||
| Dimmest | align=center | 19.9 | align=center | 505 m | |||
| Dimmest | align=center | 19.2 | align=center | 210 m | |||
| Orbital Records | |||||||
| align=left | Perihelion Records | align=left | Object | align=left | q (AU) | align=left | notes |
| Smallest | align=center | 0.092 | smallest of all asteroids | ||||
| Smallest | align=center | 0.464 | |||||
| Largest | align=center | 0.790 | |||||
| Largest | align=center | 0.984 | Earth Co-Orbital | ||||
| align=left | Semi-Major Axis Records | align=left | Object | align=left | a (AU) | align=left | notes |
| Smallest | align=center | 0.55536 | Apohele asteroid, smallest semimajor axis of all asteroids | ||||
| Smallest | align=center | 0.610 | |||||
| Smallest | align=center | 0.642 | |||||
| Smallest | align=center | 0.832 | |||||
| Largest | align=center | 0.998 | Earth Co-Orbital | ||||
| Largest | align=center | 0.999 | In Earth's Zone of Influence | ||||
| align=left | Aphelion Records | align=left | Object | align=left | Q (AU) | align=left | notes |
| Smallest | align=center | 0.973 | Apohele asteroid, smallest of all asteroids | ||||
| Smallest | align=center | 1.019 | smallest of all numbered asteroids | ||||
| Smallest | align=center | 1.143 | smallest of all named asteroids | ||||
| Largest | align=center | 1.511 | Earth Co-Orbital | ||||
| Largest | align=center | 1.705 | In Earth's Zone of Influence, Binary | ||||
| align=left | Eccentricity Records | align=left | Object | align=left | e | align=left | notes |
| Smallest | align=center | 0.013 | Earth Co-Orbital | ||||
| Smallest | align=center | 0.183 | |||||
| Largest | align=center | 0.515 | Earth Co-Orbital | ||||
| Largest | align=center | 0.895 | |||||
| align=left | Inclination Records | align=left | Object | align=left | i (deg) | align=left | notes |
| Smallest | align=center | 0.0° | |||||
| Smallest | align=center | 1.3° | |||||
| Smallest | align=center | 5.9° | |||||
| Largest | align=center | 49.0° | |||||
| Largest | align=center | 53.3° |