142 Polana
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| Orbital characteristics 1 | |
|---|---|
| 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 | |
| Diameter | 55.3 km |
| Rotation period | 9.764 hours |
| Spectral class | F |
| Abs. magnitude | 10.27 |
| Albedo 4 | 0.045 |
| History 2 | |
| 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.
| Minor planets | ||
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| Previous minor planet | 142 Polana | Next minor planet |
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| Vulcanoids | Near-Earth asteroids | Main belt | Jupiter Trojans | Centaurs | Damocloids | Comets | Trans-Neptunians (Kuiper belt · Scattered disc · Oort cloud) |
| For other objects and regions, see: asteroid groups and families, binary asteroids, asteroid moons and the Solar system For a complete listing, see: List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names. |
