890 Waltraut
890 Waltraut is an Eoan asteroid from the outer region of the asteroid belt that was discovered by German astronomer Max Wolf on 11 March 1918. It was named for a character in Richard Wagner's opera, Götterdämmerung (Twilight of the Gods).
| Discovery[1] | |
|---|---|
| Discovered by | Max Wolf |
| Discovery site | Heidelberg Observatory |
| Discovery date | 11 March 1918 |
| Designations | |
| (890) Waltraut | |
| main-belt Eos | |
| Orbital characteristics [2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 95.39 yr (34842 days) |
| Aphelion | 3.2017 AU (478.97 Gm) |
| Perihelion | 2.8415 AU (425.08 Gm) |
| 3.0216 AU (452.02 Gm) | |
| Eccentricity | 0.059606 |
| 5.25 yr (1918.5 d) | |
| 174.471° | |
| 0° 11m 15.54s / day | |
| Inclination | 10.872° |
| 160.683° | |
| 90.307° | |
| Physical characteristics | |
Mean radius | 13.665±0.85 km |
| 12.581 h (0.5242 d) | |
| 0.1153±0.016 | |
| 10.78 | |
This is a member of the dynamic Eos family of asteroids that most likely formed as the result of a collisional breakup of a parent body.[3]
References
- Discovery Circumstances: Numbered Minor Planets
- Yeomans, Donald K., "890 Waltraut", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 3 May 2016.
- Veeder, G. J.; et al. (March 1995), "Eos, Koronis, and Maria family asteroids: Infrared (JHK) photometry" (PDF), Icarus, 114, pp. 186–196, Bibcode:1995Icar..114..186V, CiteSeerX 10.1.1.31.2739, doi:10.1006/icar.1995.1053.
External links
- 890 Waltraut at AstDyS-2, Asteroids—Dynamic Site
- 890 Waltraut at the JPL Small-Body Database
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