2340 Hathor

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2340 Hathor
Discovered by C.T. Kowal
Discovery date October 22, 1976
Named after Hathor
Alternative names 1976 UA
Minor planet category Aten
Orbital characteristics
Epoch January 1, 2007 (JD 2454101.5 )
Aphelion 1.224 AU, 183.054 Gm
Perihelion 0.464 AU, 69.443 Gm
Semi-major axis 0.844 AU, 126.248 Gm
Eccentricity 0.450
Orbital period 0.775 a , 283.169 d
Average orbital speed 30.713 km/s
Mean anomaly 72.104°
Inclination 5.854 °
Longitude of ascending node 211.516°
Argument of perihelion 35.936°
Physical characteristics
Dimensions 0.3 km (assumed)
Albedo 0.15 (assumed)
Spectral type Sq
Absolute magnitude (H) 20.0

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]


  1. ^ a b "JPL Close-Approach Data: 2340 Hathor (1976 UA)". 2012-02-03 last obs. Retrieved 2014-03-21. 
  2. ^ Dr. Lance A. M. Benner (2014-03-17). "Goldstone Asteroid Schedule". NASA/JPL Asteroid Radar Research. Retrieved 2014-03-21. 

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