(5139) Rumoi

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Asteroid
(5139) Rumoi
Properties of the orbit ( animation )
Epoch:  December 9, 2014 ( JD 2,457,000.5)
Orbit type Main belt asteroid
Asteroid family Koronis family
Major semi-axis 2.8534  AU
eccentricity 0.0341
Perihelion - aphelion 2.7561 AU - 2.9508 AU
Inclination of the orbit plane 2.8500 °
Length of the ascending node 57.0908 °
Argument of the periapsis 224.7187 °
Sidereal period 4.82 a
Mean orbital velocity 17.63 km / s
Physical Properties
Medium diameter approx. 12 km
Rotation period 3.257 h
Absolute brightness 12.0 mag
history
Explorer Masaru Mukai
Masanori Takeishi
Date of discovery November 13, 1990
Another name 1990 VH 4 , 1956 UM, 1959 JH, 1973 FG 2 , 1989 QK 1
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items.

(5139) Rumoi is an asteroid of the main belt , which on 13 November 1990 by the Japanese astronomer Masaru Mukai and Masanori Takeishi at the observatory in Kagoshima ( IAU code 364) on the island of Kyushu was discovered.

The asteroid is a member of the Koronis family, a group of asteroids named after (158) Koronis.

(5139) Rumoi was named after the city of Rumoi in the north of the island of Hokkaidō in the Rumoi sub-prefecture .

See also

Individual evidence

  1. The family membership of (5139) Rumoi in the AstDyS-2 database (English)

Web links