92 Undina
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| Discovery | |
|---|---|
| Discovered by: | Christian Heinrich Friedrich Peters |
| Discovery date: | July 7, 1867 |
| Alternative names: | |
| Minor planet category: | Main belt |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion distance: | 525.202 Gm (3.511 AU) |
| Perihelion distance: | 429.240 Gm (2.869 AU) |
| Semi-major axis: | 477.221 Gm (3.190 AU) |
| Eccentricity: | 0.101 |
| Orbital period: | 2081.086 d (5.70 a) |
| Avg. orbital speed: | 16.63 km/s |
| Mean anomaly: | 117.332° |
| Inclination: | 9.922° |
| Longitude of ascending node: | 101.830° |
| Argument of perihelion: | 242.178° |
| Physical characteristics | |
| Dimensions: | 126.4 km |
| Mass: | 2.1×1018 kg |
| Mean density: | ? g/cm³ |
| Equatorial surface gravity: | 0.0353 m/s² |
| Escape velocity: | 0.0668 km/s |
| Rotation period: | ? d |
| Albedo: | 0.251 [1] |
| Temperature: | ~156 K |
| Spectral type: | M |
| Absolute magnitude: | 6.61 |
92 Undina (un-dee'-nə) is a large main belt asteroid. It has an unusually high albedo and an M-type spectrum. It was discovered by C. H. F. Peters on July 7, 1867. It is named the eponymous heroine of Undine, a popular novella by Friedrich de la Motte Fouqué. Undina is a member of the Veritas asteroid family, which formed some eight million years ago. See 490 Veritas for details.
[edit] References
| Minor planets | ||
|---|---|---|
| Previous minor planet | 92 Undina | 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.
