Английская Википедия:255 Oppavia

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Oppavia (minor planet designation: 255 Oppavia) is a sizeable Main belt asteroid. It was discovered by Austrian astronomer Johann Palisa on 31 March 1886 in Vienna and was named after Opava, a town in the Czech Republic, then part of Austria-Hungary, where Palisa was born. It is orbiting the Sun at a distance of Шаблон:Val with an orbital eccentricity (ovalness) of 0.077 and a period of Шаблон:Convert. The orbital plane is inclined by an angle of 9.47° to the plane of the ecliptic.

Photometric observations made during 2013 indicate a synodic rotation period of Шаблон:Val with an amplitude of 0.16Шаблон:± in magnitude. The unusual light curve shows three uneven minima and maxima per cycle. In 1995, 255 Oppavia was suggested as a peripheral member of the now defunct Ceres asteroid family, but was found to be an unrelated interloper on the basis of its non-matching spectral type. It classified as a dark X-type asteroid in the Tholen taxonomy.

External links

• The Asteroid Orbital Elements Database
• Minor Planet Discovery Circumstances
• Asteroid Lightcurve Data File
• Orbital simulation of asteroid 255 Oppavia
• Asteroid 255 Oppavia in Planetky z našich luhů a hájů (in Czech)
• Шаблон:AstDys
• Шаблон:JPL small body

Шаблон:Beltasteroid-stub