2340 Hathor
2340 Hathor (/ˈhæθɔːr, -ər/), provisional designation 1976 UA, is an eccentric stony asteroid, classified as near-Earth object and potentially hazardous asteroid. It belongs to the Aten group of asteroids and measures approximately 210 meters in diameter. Discovered by Charles Kowal in 1976, it was later named after the ancient Egyptian goddess Hathor.
| Discovery | |
|---|---|
| Discovered by | C. Kowal |
| Discovery site | Palomar Obs. |
| Discovery date | 22 October 1976 |
| Designations | |
MPC designation | (2340) Hathor |
| Pronunciation | /ˈhæθɔːr, -ər/ |
Named after | Hathor (Egyptian deity) |
Alternative designations | 1976 UA |
Minor planet category | Aten · NEO · PHA |
| Orbital characteristics | |
| Epoch 11 August 2004 (JD 2453228.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 38.00 yr (13,878 days) |
| Aphelion | 1.2235 AU |
| Perihelion | 0.4642 AU |
Semi-major axis | 0.8438 AU |
| Eccentricity | 0.4499 |
Orbital period (sidereal) | 0.78 yr (283 days) |
Mean anomaly | 42.104° |
Mean motion | 1° 16m 17.4s / day |
| Inclination | 5.8546° |
Longitude of ascending node | 211.54° |
| 39.926° | |
| Earth MOID | 0.0069 AU · 2.7 LD |
| Physical characteristics | |
| Dimensions | 0.210±0.030 km 0.3 km (dated) |
Synodic rotation period | 3.350±0.002 h |
| 0.15 (dated) 0.3331 (derived) | |
| CSU (Tholen) Sq (SMASS) · S B–V = 0.770 U–B = 0.500 | |
| 20.2 | |
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