785 Zwetana
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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. It was named for the daughter of Kiril Popoff, a Bulgarian astronomer.[1] This asteroid is orbiting Script error: No such module "val". from the Sun with an eccentricity (ovalness) of 0.21 and a period of Script error: No such module "convert".. The orbital plane is inclined by an angle of 12.8° to the plane of the ecliptic.[2]
This asteroid spans a girth of Script error: No such module "val". and it has a Tholen taxonomic class of M. Radar observations indicate that it is almost certainly metallic.[3] The near infrared spectra suggests the presence of spinel on the surface, which is indicative of calcium–aluminium-rich inclusions.[4] The best meteorite analog to the near infrared spectrum of this object is the enstatite chondrite, Abee.[5]
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 Script error: No such module "val". and a brightness variation of Script error: No such module "val". in magnitude.[6] 2013 observations from the Palmer Divide Observatory found a rotation period of 8.885 hours with a magnitude amplitude of 0.18. This is consistent with other published results.[7]
References
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External links
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