List of Aten asteroids
Template:Short description This is a list of Aten asteroids, a group of near-Earth objects. Template:As of, there are 1125 known Atens,<ref name="JPL-NEO-statistics" /> most of which remain provisionally designated without a number,<ref name="MPC-Atens-list" /> 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).
Named Atens
Aten asteroids are generally named after Egyptian deities.<ref name="BAN315">Template:Citation</ref> Template:As of, a total of fourteen Aten asteroids have received a name. They are listed in chronological order of discovery.
| Number | Name | Year | Discoverer |
|---|---|---|---|
| 2062 | Aten | 1976 | Eleanor F. Helin |
| 2340 | Hathor | 1976 | Charles T. Kowal |
| 2100 | Ra-Shalom | 1978 | Eleanor F. Helin |
| 3362 | Khufu | 1984 | R. Scott Dunbar, Maria A. Barucci |
| 3554 | Amun | 1986 | Carolyn S. Shoemaker, Eugene M. Shoemaker |
| 3753 | Cruithne | 1986 | J. Duncan Waldron |
| 5381 | Sekhmet | 1991 | Carolyn S. Shoemaker |
| 136818 | Selqet | 1997 | Roy Tucker |
| 326290 | Akhenaten | 1998 | Roy Tucker |
| 66391 | Moshup | 1999 | LINEAR |
| 524522 | Zoozve | 2002 | LONEOS |
| 99942 | Apophis | 2004 | Roy Tucker, David J. Tholen and Fabrizio Bernardi |
| 398188 | Agni | 2010 | WISE |
| 367943 | Duende | 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.<ref name=news177 />
Brightest Atens
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 |
|---|---|---|---|---|
| Template:Mp | 1998/10/13 | 14.5 | Template:Sort | Template:LoMP |
| Template:Mp | 1999/04/20 | 14.5 | Template:Sort | Template:LoMP |
| 3753 Cruithne | 1986/10/10 | 15.6 | Template:Sort | Template:LoMP |
| Template:Mp | 2000/03/15 | 15.8 | Template:Sort | Template:LoMP |
| Template:Mp | 2000/07/10 | 15.8 | Template:Sort | Template:LoMP |
| 3554 Amun | 1986/03/04 | 15.82 | Template:Sort | Template:LoMP |
| Template:Mp | 2000/09/20 | 16.0 | Template:Sort | Template:LoMP |
| 2100 Ra-Shalom | 1978/09/10 | 16.05 | Template:Sort | Template:LoMP |
| Template:Mp | 1998/12/01 | 16.2 | Template:Sort | Template:LoMP |
Selection of designated Atens
Record-holding Atens
The following is a list of current records for Aten asteroids
| Discovery Records | |||
|---|---|---|---|
| Record | Object | Date | |
| First Detected | Template:Mpl | 5 December 1954 | |
| First Confirmed | 2062 Aten | 7 January 1976 | |
| Physical Records | |||
| Record | Object | Absolute magnitude | Diameter |
| Brightest | Template:Mpl | 14.5 | 4.3 km |
| Brightest Template:Small | Template:Mpl | 14.7 | 3.6 km |
| Brightest Template:Small | 3753 Cruithne | 15.1 | 3.3 km |
| Smallest Template:Small | 3362 Khufu | 18.3 | 700 m |
| Dimmest | Template:Mpl | 29.1 | 5 m |
| Dimmest Template:Small | Template:Mpl | 19.9 | 505 m |
| Dimmest Template:Small | 2340 Hathor | 19.2 | 210 m |
| Orbital Records | |||
| Perihelion Records | Object | q (AU) | notes |
| Smallest | Template:Mpl | 0.092 | smallest of all asteroids |
| Smallest Template:Small | 2340 Hathor | 0.464 | |
| Largest Template:Small | 2062 Aten | 0.790 | |
| Largest | Template:Mpl | 0.984 | Earth Co-Orbital |
| Semi-Major Axis Records | Object | a (AU) | notes |
| Smallest | Template:Mpl | 0.610 | |
| Smallest Template:Small | 66391 Moshup | 0.642 | |
| Smallest Template:Small | 2100 Ra-Shalom | 0.832 | |
| Largest Template:Small | 3753 Cruithne | 0.998 | Earth Co-Orbital |
| Largest | Template:Mpl | 0.999 | In Earth's Zone of Influence |
| Aphelion Records | Object | Q (AU) | notes |
| Smallest | Template:Mpl | 0.973 | Apohele asteroid, smallest of all asteroids |
| Smallest Template:Small | Template:Mpl | 1.019 | smallest of all numbered asteroids |
| Smallest Template:Small | 2062 Aten | 1.143 | smallest of all named asteroids |
| Largest Template:Small | 3753 Cruithne | 1.511 | Earth Co-Orbital |
| Largest | Template:Mpl | 1.705 | In Earth's Zone of Influence, Binary |
| Eccentricity Records | Object | e | notes |
| Smallest | Template:Mpl | 0.013 | Earth Co-Orbital |
| Smallest Template:Small | 2062 Aten | 0.183 | |
| Largest Template:Small | 3753 Cruithne | 0.515 | Earth Co-Orbital |
| Largest | Template:Mpl | 0.895 | |
| Inclination Records | Object | i (deg) | notes |
| Smallest | 2004 FH | 0.0° | |
| Smallest Template:Small | (65679) 1989 UQ | 1.3° | |
| Smallest Template:Small | 2340 Hathor | 5.9° | |
| Largest Template:Small | 5381 Sekhmet | 49.0° | |
| Largest | Template:Mpl | 53.3° | |
References
External links
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