161 Athor
A three-dimensional model of 161 Athor based on its light curve. | |
Discovery[1] | |
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Discovered by | James Craig Watson |
Discovery site | Detroit Observatory |
Discovery date | April 19, 1876 |
Designations | |
MPC designation | 161 |
Named after | Hathor |
Main belt[2] | |
Orbital characteristics[3] | |
Epoch November 30, 2008 | |
Aphelion | 2.7075 AU |
Perihelion | 2.0507 AU |
2.3791 AU | |
Eccentricity | 0.138031 |
1340.35 days (3.67 years) | |
317.519° | |
Inclination | 9.054° |
18.766° | |
294.4° | |
Physical characteristics | |
Dimensions |
44.19 kilometres (27.46 mi) ± 3.3 kilometres (2.1 mi) Mean diameter[4] 47.0 kilometres (29.2 mi) ± 0.2 kilometres (0.12 mi) circular fit[5] |
7.281 ± 0.001 hours[6] | |
Albedo | 0.198 ± 0.033[4] |
Spectral type | M[8] |
9.15[9] | |
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161 Athor is an M-type Main belt asteroid that was discovered by James Craig Watson on April 19, 1876, at the Detroit Observatory[1] and named after Hathor, an Egyptian fertility goddess. An occultation by Athor was observed, on October 15, 2002, resulting in an estimated diameter of 47.0 kilometres (29.2 mi).[5]
References
- 1 2 "Discovery Circumstances: Numbered Minor Planets (1)-(5000)". IAU: Minor Planet Center. Archived from the original on February 2, 2009. Retrieved December 20, 2008.
- ↑ "161 Athor". JPL Small-Body Database. Jet Propulsion Laboratory. Retrieved December 27, 2008.
- ↑ "(161) Athor". AstDyS. Italy: University of Pisa. Retrieved December 20, 2008.
- 1 2 Tedesco; et al. (2004). "Supplemental IRAS Minor Planet Survey (SIMPS)". IRAS-A-FPA-3-RDR-IMPS-V6.0. Planetary Data System. Archived from the original on January 17, 2010. Retrieved December 27, 2008.
- 1 2 Dunham & Herald (2008). "Asteroid Occultations". EAR-A-3-RDR-OCCULTATIONS-V6.0. Planetary Data System. Archived from the original on January 1, 2008. Retrieved December 27, 2008.
- ↑ Pilcher & Higgins (2008). "Period Determination for 161 Athor". The Minor Planet Bulletin 35 (4): 147. Bibcode:2008MPBu...35..147P.
- ↑ Debehogne & Zappala (1980). "Photoelectric lightcurves of the asteroids 139 Juewa and 161 Athor, obtained with the 50 CM photometric telescope at ESO, La Silla". Astronomy and Astrophysics Supplement Series 42: 85–89. Bibcode:1980A&AS...42...85D.
- ↑ Neese (2005). "Asteroid Taxonomy". EAR-A-5-DDR-TAXONOMY-V5.0. Planetary Data System. Archived from the original on January 17, 2010. Retrieved December 27, 2008.
- ↑ Tholen (2007). "Asteroid Absolute Magnitudes". EAR-A-5-DDR-ASTERMAG-V11.0. Planetary Data System. Archived from the original on June 11, 2008. Retrieved December 27, 2008.
External links
- 161 Athor at the JPL Small-Body Database
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