Global Information2062 Aten information
 Orbit of Aten at epoch September 2013 | |
| Discovery [1][2] | |
|---|---|
| Discovered by | E. F. Helin |
| Discovery site | Palomar Obs. |
| Discovery date | 7 January 1976 |
| Designations | |
MPC designation | (2062) Aten |
| Pronunciation | /ˈɑːtən/ |
Named after | Aten (Egyptian mythology)[3] |
Alternative designations | 1976 AA |
Minor planet category | Aten · NEO [1][2] |
| Symbol |  |
| Orbital characteristics [1] | |
| Epoch 31 December 2011 (JD 2455926.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 59.14 yr (21,601 days) |
| Earliest precovery date | 17 December 1955 |
| Aphelion | 1.1434 AU |
| Perihelion | 0.7901 AU |
Semi-major axis | 0.9668 AU |
| Eccentricity | 0.1827 |
Orbital period (sidereal) | 0.95 yr (347 days) |
Mean anomaly | 172.27° |
Mean motion | 1° 2m 12.48s / day |
| Inclination | 18.934° |
Longitude of ascending node | 108.60° |
Argument of perihelion | 148.04° |
| Earth MOID | 0.1131 AU · 44.1 LD |
| Physical characteristics | |
| Dimensions | 0.73±0.03 km[4] 0.80±0.03 km[5] 0.91 km[6] 1.1 km[7] 1.30 km[8] |
Synodic rotation period | 40.77 h[9] |
Geometric albedo | 0.20[8] 0.20±0.15[10] 0.26[7] 0.28[6] 0.39±0.05[4] 0.52±0.10[5] |
Spectral type | S (Tholen)[1] · Sr (SMASS)[1] B–V = 0.930[1] U–B = 0.460[1] |
Absolute magnitude (H) | 16.80[1][5] · 17.01±1.40[11] · 17.12[9] · 17.20[12][6] · 17.30[4] |
2062 Aten /ˈɑːtən/,[a] provisional designation 1976 AA, is a stony sub-kilometer asteroid and namesake of the Aten asteroids, a subgroup of near-Earth objects. The asteroid was named after Aten from Egyptian mythology.
It was discovered on 7 January 1976, at the Palomar Observatory by American astronomer Eleanor Helin,[2] who was the principal scientist for the NEAT project until her retirement in 2002. The S-type asteroid measures approximately 900 meters in diameter, has a longer-than average rotation period of 44.77 hours, and approaches the orbit Earth to 44.1 lunar distances.
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