2062 Aten
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|
| Discovery A (http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html) | |
|---|---|
| Discoverer | Eleanor F. Helin |
| Discovery date | January 7, 1976 |
| Alternate designations | 1976 AA B (http://cfa-www.harvard.edu/iau/MPDes.html) |
| Category | Aten asteroid |
| Orbital elements C (http://asteroid.lowell.edu/) Epoch July 14, 2004 (JD 2453200.5) | |
| Eccentricity (e) | 0.183 |
| Semi-major axis (a) | 144.617 Gm (0.967 AU) |
| Perihelion (q) | 118.197 Gm (0.790 AU) |
| Aphelion (Q) | 171.038 Gm (1.143 AU) |
| Orbital period (P) | 347.168 d (0.95 a) |
| Mean orbital speed | 30.29 km/s |
| Inclination (i) | 18.932° |
| Longitude of the ascending node (Ω) | 108.635° |
| Argument of perihelion (ω) | 147.946° |
| Mean anomaly (M) | 225.354° |
| Physical characteristics | |
| Dimensions | 0.9 km |
| Mass | 7.6×1011 kg |
| Density | 2 ? g/cm³ |
| Surface gravity | 0.000 25 m/s² |
| Escape velocity | 0.000 48 km/s |
| Rotation period | 1.699 d |
| Spectral class | S |
| Absolute magnitude | 16.80 |
| Albedo | 0.2 |
| Mean surface temperature | ~275 K |
2062 Aten is an asteroid that was discovered at the Palomar Mountain Observatory by Eleanor F. Helin, who is now the principal scientist for the NEAT (Near-Earth Asteroid Tracking) project. 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, of which 16 are known and numbered, and some 212 awaiting numbering as of July 2004, ranging from 1989 VA to 2004 MD6.
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