2062 Aten: Difference between revisions
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| mp_category = [[Aten asteroid]] |
| mp_category = [[Aten asteroid]] |
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| orbit_ref = <ref name=jpldata/> |
| orbit_ref = <ref name=jpldata/> |
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| epoch = |
| epoch = December 31, 2011 <br> (JD 2455926.5) |
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| semimajor = |
| semimajor = {{convert|0.9668|AU|Gm|abbr=on}} |
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| perihelion = |
| perihelion = {{convert|0.7901|AU|Gm|abbr=on}} |
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| aphelion = {{ |
| aphelion = {{convert|1.1434|AU|Gm|abbr=on}} |
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| eccentricity = 0. |
| eccentricity = 0.18272 |
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| period = 347. |
| period = 347.213 d <br> (0.95 [[Julian year (astronomy)|yr]]) |
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| inclination = 18. |
| inclination = 18.934° |
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| asc_node = 108. |
| asc_node = 108.60° |
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| arg_peri = |
| arg_peri = 148.04° |
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| mean_anomaly = |
| mean_anomaly = 172.27° |
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| moid = {{convert|0.1131|AU|Gm|abbr=on}} |
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| avg_speed = 30.04 km/s |
| avg_speed = 30.04 km/s |
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| dimensions = 1.1 km<ref name=jpldata /> |
| dimensions = 1.1 km<ref name=jpldata /> |
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Revision as of 18:00, 9 December 2015
 Orbital diagram of the Aten asteroid (epoch: Sept. 2013) | |
| Discovery | |
|---|---|
| Discovered by | Eleanor F. Helin |
| Discovery site | Palomar |
| Discovery date | January 7, 1976 |
| Designations | |
Named after | Aten |
| 1976 AA | |
| Aten asteroid | |
| Orbital characteristics[1] | |
| Epoch December 31, 2011 (JD 2455926.5) | |
| Aphelion | 1.1434 AU (171.05 Gm) |
| Perihelion | 0.7901 AU (118.20 Gm) |
| 0.9668 AU (144.63 Gm) | |
| Eccentricity | 0.18272 |
| 347.213 d (0.95 yr) | |
Average orbital speed | 30.04 km/s |
| 172.27° | |
| Inclination | 18.934° |
| 108.60° | |
| 148.04° | |
| Earth MOID | 0.1131 AU (16.92 Gm) |
| Physical characteristics | |
| Dimensions | 1.1 km[1] |
| Mass | 7.6×1011 kg |
Mean density | 2 ? g/cm³ |
| 0.000 25 m/s² | |
| 0.000 48 km/s | |
| 40.77 hr[1] | |
| Albedo | 0.26[1] |
| Temperature | ~ 275 K |
Spectral type | S[1] |
| 16.80[1] | |
2062 Aten (/ˈɑːtən/)[2] is an asteroid that was discovered at the Palomar Mountain Observatory by Eleanor F. Helin, who was the principal scientist for the NEAT (Near-Earth Asteroid Tracking) project until she retired in 2002. It is named after Aten, the Egyptian god of the solar disk.
Aten was the first asteroid found to have a semi-major orbital axis of less than one astronomical unit. A new category of asteroids was thus created, the Atens. As of July 2004 about 16 Atens were numbered and some 212 were provisional,[3] the unnumbered Atens ranged from what was then 1989 VA to 2004 MD6.
References
- ^ a b c d e f "JPL Small-Body Database Browser: 2062 Aten (1976 AA)" (2014-02-14 last obs (arc=58 yr)). Jet Propulsion Laboratory. Retrieved 2014-02-23.
- ^ Oxford English Dictionary
- ^ "NEO Discovery Statistics". Retrieved 2014-02-26.