142 Polana
|
|
| Orbital characteristics 1 (ftp://ftp.lowell.edu/pub/elgb/astorb.html) | |
|---|---|
| Orbit type | Main belt (Polana) |
| Semimajor axis | 2.418 AU |
| Perihelion distance | 2.089 AU |
| Aphelion distance | 2.747 AU |
| Orbital period | 3.76 years |
| Inclination | 2.24° |
| Eccentricity | 0.136 |
| Physical characteristics 1 (ftp://ftp.lowell.edu/pub/elgb/astorb.html) | |
| Diameter | 55.3 km |
| Rotation period | 9.764 hours |
| Spectral class | F |
| Abs. magnitude | 10.27 |
| Albedo 4 (http://dorothy.as.arizona.edu/DSN/IRAS/index_iras.html) | 0.045 |
| History 2 (http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html) | |
| Discoverer | J. Palisa, 1875 |
142 Polana is a very dark Main belt asteroid. It is a primitive carbonaceous asteroid of type F (a subdivision of more common C-type).
It is a major member of the Polana family, which is related to the Nysa family.
It was discovered by Johann Palisa on January 28, 1875, and named after the city of Pola (now Pula, Croatia) where he made the discovery.
... | Previous asteroid | 142 Polana | Next asteroid | ...
| The minor planets |
| Vulcanoids | Main belt | Groups and families | Near-Earth objects | Jupiter Trojans |
| Centaurs | Trans-Neptunians | Damocloids | Comets | Kuiper belt | Oort cloud |
| (For other objects and regions, see: Binary asteroids, Asteroid moons and the Solar system) |
| (For a complete listing, see: List of asteroids. For pronunciation, see: Pronunciation of asteroid names.) |