Английская Википедия:18 Melpomene
Шаблон:Short description Шаблон:Infobox planet
Melpomene (minor planet designation: 18 Melpomene) is a large, bright main-belt asteroid that was discovered by J. R. Hind on 24 June 1852,[1] and named after Melpomenē, the Muse of tragedy in Greek mythology. It is classified as an S-type asteroid and is composed of silicates and metals. This asteroid is orbiting the Sun at a distance of Шаблон:Cvt with a period of Шаблон:Convert and an eccentricity (ovalness) of 0.22. The orbital plane is tilted at an angle of 10.1° to the plane of the ecliptic.[2]
Melpomene occulted the star SAO 114159 on 11 December 1978. A possible Melpomenean satellite with a diameter at least 37 km was detected. The satellite candidate received a provisional designation S/1978 (18) 1.[3] In 1988 a search for satellites or dust orbiting this asteroid was performed using the UH88 telescope at the Mauna Kea Observatories, but the effort came up empty.[4] Melpomene was observed with the Hubble Space Telescope in 1993. It was able to resolve the asteroid's slightly elongated shape, but no satellites were detected.[5]
Melpomene has been studied by radar.[6] Photometric observations during 2012 provided a rotation period of Шаблон:Val with a brightness variation of Шаблон:Val in magnitude, which is consistent with previous studies.[7] It has a mean diameter of Шаблон:Val.[8][2]
Melpomene can reach an apparent magnitude of +7.9 at a favorable opposition near perihelion, such as occurred in September 2002 when it was Шаблон:Convert from Earth.[9]
References
External links
Шаблон:Use dmy dates Шаблон:Minor planets navigator Шаблон:Small Solar System bodies
vec:Lista de asteroidi#18 Melpòmene
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- Английская Википедия
- Background asteroids
- Discoveries by John Russell Hind
- Named minor planets
- S-type asteroids (Tholen)
- S-type asteroids (SMASS)
- Astronomical objects discovered in 1852
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