555 Norma
| Discovery | |
|---|---|
| Discovered by | M. F. Wolf |
| Discovery site | Heidelberg |
| Discovery date | 14 January 1905 |
| Designations | |
| 1905 PT | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 110.96 yr (40528 d) |
| Aphelion | 3.6658 AU (548.40 Gm) |
| Perihelion | 2.7107 AU (405.51 Gm) |
| 3.1882 AU (476.95 Gm) | |
| Eccentricity | 0.14978 |
| 5.69 yr (2079.3 d) | |
| 274.488° | |
| 0° 10m 23.268s / day | |
| Inclination | 2.6461° |
| 130.435° | |
| 356.413° | |
| Earth MOID | 1.72456 AU (257.991 Gm) |
| Jupiter MOID | 1.40251 AU (209.813 Gm) |
| Jupiter Tisserand parameter | 3.178 |
| Physical characteristics | |
Mean radius | 20.055±0.75 km |
| 19.55 h (0.815 d) | |
| 0.0632±0.005 | |
| 10.8 | |
|
| |
555 Norma is a Themistian asteroid. As with a number of asteroids discovered by M. F. Wolf in the early 20th century, it is named for a female character in opera, the title character of Bellini's Norma.
References
- ↑ "555 Norma (1905 PT)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.
External links
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