173 Ino
| Discovery | |
|---|---|
| Discovered by | A. Borrelly |
| Discovery date | 1 August 1877 |
| Designations | |
| Main belt | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 137.23 yr (50124 d) |
| Aphelion | 3.3150 AU (495.92 Gm) |
| Perihelion | 2.1769 AU (325.66 Gm) |
| 2.7459 AU (410.78 Gm) | |
| Eccentricity | 0.20724 |
| 4.55 yr (1662.0 d) | |
| 177.40° | |
| 0° 12m 59.796s / day | |
| Inclination | 14.201° |
| 148.24° | |
| 228.58° | |
| Earth MOID | 1.20178 AU (179.784 Gm) |
| Jupiter MOID | 2.2149 AU (331.34 Gm) |
| Jupiter Tisserand parameter | 3.273 |
| Physical characteristics | |
| Dimensions |
154.10±3.5 km[1] 160.07 ± 6.04 km[2] |
| Mass | (4.79 ± 3.11) × 1018 kg[2] |
Mean density | 2.23 ± 1.47 g/cm3[2] |
|
6.15 h (0.256 d)[1] 6.163 hours[3] | |
| 0.0642±0.003 | |
| C | |
| 7.66,[1] 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
- 1 2 3 4 Yeomans, Donald K., "173 Ino", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
- 1 2 3 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, arXiv:1203.4336
, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1. - 1 2 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, 443 (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", The Minor Planet Bulletin, 34, pp. 113–119, Bibcode:2007MPBu...34..113W.
External links
- 173 Ino at the JPL Small-Body Database
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