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
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