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) |
| Jupiter Tisserand parameter | 3.365 |
| Physical characteristics | |
Mean radius | 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.
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
- 1 2 Yeomans, Donald K., "785 Zwetana", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 5 May 2016.
- 1 2 Dotto, E.; et al. (June 1992), "M-type asteroids - Rotational properties of 16 objects", Astronomy and Astrophysics Supplement Series, 95 (2), pp. 195–211, Bibcode:1992A&AS...95..195D.
External links
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