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
edit- ^ 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, vol. 114, pp. 186–196, Bibcode:1995Icar..114..186V, CiteSeerX 10.1.1.31.2739, doi:10.1006/icar.1995.1053.
External links
edit- 890 Waltraut at AstDyS-2, Asteroids—Dynamic Site
- 890 Waltraut at the JPL Small-Body Database
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