551 Ortrud
Main-belt asteroid in the Solar System
From Wikipedia, the free encyclopedia
551 Ortrud is a minor planet orbiting the Sun. It is located in the Main Belt. In light of the practice of the discover c. 1904 to name his asteroids after female characters in opera, it is likely that Ortrud is named after a character in Richard Wagner's opera Lohengrin.
| Discovery | |
|---|---|
| Discovered by | Max Wolf |
| Discovery site | Heidelberg |
| Discovery date | 16 November 1904 |
| Designations | |
| (551) Ortrud | |
| Pronunciation | German: [ˈɔʁtʁʊt][1] |
| 1904 PM | |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 111.06 yr (40565 d) |
| Aphelion | 3.3325 AU (498.53 Gm) |
| Perihelion | 2.6019 AU (389.24 Gm) |
| 2.9672 AU (443.89 Gm) | |
| Eccentricity | 0.12311 |
| 5.11 yr (1866.9 d) | |
| 306.688° | |
| 0° 11m 34.188s / day | |
| Inclination | 0.39727° |
| 6.0272° | |
| 68.010° | |
| Physical characteristics | |
| 39.23±2.05 km | |
| 13.05 h (0.544 d) | |
| 0.0426±0.005 | |
| 9.57 | |
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