92 Undina
.gif) |
|
| Discovery | |
|---|---|
| Discovered by | Christian Heinrich Friedrich Peters |
| Discovery date | 7 July 1867 |
| Designations | |
| Main belt, Veritas family | |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 145.11 yr (53001 d) |
| Aphelion | 3.51946 AU (526.504 Gm) |
| Perihelion | 2.85654 AU (427.332 Gm) |
| 3.18800 AU (476.918 Gm) | |
| Eccentricity | 0.10397 |
| 5.69 yr (2079.1 d) | |
|
Average orbital speed
|
16.63 km/s |
| 6.12456° | |
| 0° 10m 23.347s / day | |
| Inclination | 9.92900° |
| 101.588° | |
| 239.494° | |
| Earth MOID | 1.86252 AU (278.629 Gm) |
| Jupiter MOID | 1.84277 AU (275.674 Gm) |
| Jupiter Tisserand parameter | 3.166 |
| Physical characteristics | |
| Dimensions |
126.42±3.4 km 124.44 ± 3.25 km |
| Mass | (4.43 ± 0.25) × 1018 kg |
|
Mean density
|
4.39 ± 0.42 g/cm3 |
| 15.941 h (0.6642 d) | |
|
0.2509±0.014 0.251 |
|
| Temperature | ~156 K |
| M | |
| 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.
Observations performed at the Palmer Divide Observatory in Colorado Springs, Colorado in during 2007 produced a light curve with a period of 15.941 ± 0.002 hours with a brightness range of 0.20 ± 0.02 in magnitude. This matches a 15.94-hour period reported in 1979.
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