33 Polyhymnia
From Wikipedia, the free encyclopedia
| Discovery | |
|---|---|
| Discovered by: | J. Chacornac |
| Discovery date: | October 28, 1854 |
| Alternative names: | A887 HA; 1938 FE; 1953 AK; 1957 YL; 1963 DG; 1976 YT7 |
| Minor planet category: | Main belt |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion distance: | 573.325 Gm (3.832 AU) |
| Perihelion distance: | 283.846 Gm (1.897 AU) |
| Semi-major axis: | 428.585 Gm (2.865 AU) |
| Eccentricity: | 0.338 |
| Orbital period: | 1771.195 d (4.85 a) |
| Avg. orbital speed: | 17.08 km/s |
| Mean anomaly: | 148.947° |
| Inclination: | 1.871° |
| Longitude of ascending node: | 8.590° |
| Argument of perihelion: | 338.240° |
| Physical characteristics | |
| Dimensions: | 50-120 km [1] |
| Mass: | 1.3-18.0×1017 kg |
| Mean density: | 2.0? g/cm³ |
| Equatorial surface gravity: | 0.014-0.033 m/s² |
| Escape velocity: | 0.026-0.063 km/s |
| Rotation period: | 0.77504 d (18.601 h) [2] |
| Albedo: | 0.10? |
| Temperature: | ~164 K |
| Spectral type: | ? |
| Absolute magnitude: | 8.55 |
33 Polyhymnia (IPA: [ˌpʰɒlɪˈhɪmniə]) is a main belt asteroid.
It was discovered by J. Chacornac on October 28, 1854 and named after Polyhymnia, the Greek Muse of sacred hymns.
[edit] References
| Minor planets | ||
|---|---|---|
| Previous minor planet | 33 Polyhymnia | Next minor planet |
| List of asteroids | ||
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.
 |
This article about an asteroid native to the Main Belt is a stub. You can help Wikipedia by expanding it. |
