2340 Hathor
| Discovery | |
|---|---|
| Discovered by | C.T. Kowal |
| Discovery date | 22 October 1976 |
| Designations | |
Named after | Hathor |
| 1976 UA | |
| Aten, PHA[1] | |
| Orbital characteristics[1] | |
| Epoch 11 August 2004 (JD 2453228.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 13878 days (38.00 yr) |
| Aphelion | 1.2235 AU (183.03 Gm) |
| Perihelion | 0.46420 AU (69.443 Gm) |
| 0.84383 AU (126.235 Gm) | |
| Eccentricity | 0.44988 |
| 0.78 yr (283.1 d) | |
Average orbital speed | 30.713 km/s |
| 42.104° | |
| 1.2715°/day | |
| Inclination | 5.8546° |
| 211.542° | |
| 39.926° | |
| Earth MOID | 0.00687373 AU (1,028,295 km) |
| Jupiter MOID | 3.81114 AU (570.138 Gm) |
| Jupiter Tisserand parameter | 6.882 |
| Physical characteristics | |
| Dimensions | 0.3 km (assumed) |
Mean radius | 0.15 km |
| 3.350 h (0.1396 d) | |
| 0.15 (assumed) | |
| Sq | |
| 20.2 | |
|
| |
2340 Hathor is an asteroid that was discovered on October 22, 1976 by C.T. Kowal at Palomar. Like the other objects of Aten type, Hathor is named for an Egyptian deity. Known as a sky-goddess and the daughter of Ra, Hathor was also identified with Aphrodite. The name was proposed by E. Helin, who made an independent discovery of the object, and also made crucial recovery observations in 1981. Hathor was the 3rd Aten asteroid to be numbered.
Hathor passed 0.007752 AU (1,159,700 km; 720,600 mi) from Earth on October 20, 1976.[1] It approaches to within 30 Gm, or about 80 lunar distances, of Earth 17 times in the 21st century. The October 2014 Earth approach will be studied by the Goldstone Deep Space Network.[2] Hathor will pass 0.00658 AU (984,000 km; 612,000 mi) from Earth on October 21, 2069.[1]
It has been observed by radar astronomy and the orbital solution includes non-gravitational forces.[1]
References
- 1 2 3 4 5 "JPL Close-Approach Data: 2340 Hathor (1976 UA)" (last observation: 2012-02-03). Retrieved 11 April 2016.
- ↑ Dr. Lance A. M. Benner (2014-03-17). "Goldstone Asteroid Schedule". NASA/JPL Asteroid Radar Research. Retrieved 2014-03-21.
