785 Zwetana

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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.[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[edit]

  1. ^ a b Yeomans, Donald K., "785 Zwetana", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 5 May 2016. 
  2. ^ a b 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[edit]