173 Ino
| Discovery | |
|---|---|
| Discovered by | A. Borrelly |
| Discovery date | August 1, 1877 |
| Designations | |
| Main belt | |
| Orbital characteristics[1] | |
| Aphelion | 3.314 AU |
| Perihelion | 2.171 AU |
| 2.742 AU | |
| Eccentricity | 0.208 |
| 4.54 years | |
| Inclination | 14.21° |
| Physical characteristics | |
| Dimensions | 160.07 ± 6.04[2] km |
| Mass | (4.79 ± 3.11) × 1018[2] kg |
Mean density | 2.23 ± 1.47[2] g/cm3 |
| 6.163[3] hours | |
| Albedo | 0.064 |
Spectral type | C |
| 7.80[4] | |
173 Ino is a large main-belt asteroid that was discovered by French astronomer Alphonse Borrelly on August 1, 1877, and named after Ino, a queen in Greek mythology. The adjectival form of the asteroid name is Inoan. Categorized as a C-type asteroid from its spectrum, 173 Ino has a dark surface and a primitive carbonaceous composition.
Multiple photometric studies of this asteroid were performed between 1978 and 2002. The combined data gave an irregular, asymmetrical light curve with a period of 6.163 ± 0.005 hours and a brightness variation of 0.10–0.15 in magnitude. The asteroid is rotating in a retrograde direction.[3]
References
- ^ Yeomans, Donald K., "173 Ino", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 2013-03-25.
- ^ a b c Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, vol. 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- ^ a b Michałowski, T.; et al. (April 2005), "Photometry and models of selected main belt asteroids. II. 173 Ino, 376 Geometria, and 451 Patientia", Astronomy and Astrophysics, vol. 443, no. 1, pp. 329–335, Bibcode:2005A&A...443..329M, doi:10.1051/0004-6361:20053656.
- ^ Warner, Brian D. (December 2007), "Initial Results of a Dedicated H-G Project", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers, vol. 34, pp. 113–119, Bibcode:2007MPBu...34..113W.
External links
- 173 Ino at the JPL Small-Body Database
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