|
Discovery
|
|
|---|---|
| Discovered by | Christian Heinrich Friedrich Peters |
| Discovery date | July 7, 1867 |
|
Designations
|
|
| Alternate name(s) | |
| Minor planet category |
Main belt |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 525.202 Gm (3.511 AU) |
| Perihelion | 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) |
| Average 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 (H) | 6.61 |
92 Undina ( /ʌnˈdaɪnə/ un-dy-nə; Latin: Undīna) 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 for 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.
|
|||||
|
||||||||||||||||||||||