785 Zwetana
| Discovery | |
|---|---|
| Discovered by | Adam Massinger |
| Discovery site | Heidelberg |
| Discovery date | 30 March 1914 |
| Designations | |
| 1914 UN | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 95.43 yr (34854 d) |
| Aphelion | 3.1099 AU (465.23 Gm) |
| Perihelion | 2.0273 AU (303.28 Gm) |
| 2.5686 AU (384.26 Gm) | |
| Eccentricity | 0.21073 |
| 4.12 yr (1503.6 d) | |
| 268.20° | |
| 0° 14m 21.912s / day | |
| Inclination | 12.769° |
| 71.882° | |
| 131.607° | |
| Earth MOID | 1.04496 AU (156.324 Gm) |
| Jupiter MOID | 1.92595 AU (288.118 Gm) |
| TJupiter | 3.365 |
| Physical characteristics | |
| 24.27±0.9 km | |
| 8.919 h[2] 8.8882 h (0.37034 d)[1] | |
| 0.1245±0.010 | |
| 9.45 | |
785 Zwetana is a minor planet orbiting the Sun that was discovered by Adam Massinger, an assistant at the Heidelberg Observatory, on March 30, 1914. Radar observations indicate that it is metallic.[citation needed]
In 1990, the asteroid was observed from the European Southern Observatory, allowing a composite light curve to be produced that showed a rotation period of 8.919 ± 0.004 hours and a brightness variation of 0.13 ± 0.01 in magnitude.[2]
References
- ^ a b Yeomans, Donald K., "785 Zwetana", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 5 May 2016.
- ^ a b Dotto, E.; et al. (June 1992), "M-type asteroids - Rotational properties of 16 objects", Astronomy and Astrophysics Supplement Series, vol. 95, no. 2, pp. 195–211, Bibcode:1992A&AS...95..195D.
External links
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