(99) Dike
Asteroid (99) Dike |
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3-dimensional model of 99 Dike based on light reflection curves. | |
Properties of the orbit ( animation ) | |
Orbit type | Main belt asteroid |
Major semi-axis | 2,664 AU |
eccentricity | 0.197 |
Perihelion - aphelion | 2.139 AU - 3.189 AU |
Inclination of the orbit plane | 13.9 ° |
Length of the ascending node | 41.6 ° |
Argument of the periapsis | 195.7 ° |
Time of passage of the perihelion | January 6, 2012 |
Sidereal period | 4 a 127 d |
Mean orbital velocity | 18.1 km / s |
Physical Properties | |
Medium diameter | 72 km |
Albedo | 0.06 |
Rotation period | 10.4 h |
Absolute brightness | 9.4 mag |
Spectral class | C. |
history | |
Explorer | A. Borrelly |
Date of discovery | May 28, 1868 |
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. |
(99) Dike is a main belt asteroid discovered by French astronomer Alphonse Borrelly in Marseille on May 28, 1868 .
The celestial body was named after Dike , one of the three ears from Greek mythology .
There are various details about the period of rotation of the body, which belongs to the C class of asteroids. A study by E. Sharidan in 2009 showed a pediode of 10.360h. In 2011 F. Pilcher determined a period of 18.127h.
See also
Individual evidence
- ^ Discovery Circumstances: Numbered Minor Planets. The international Astronomical Union - Minor Planet Center, accessed July 26, 2020 .
- ↑ Lightcurve Results for 99 Dike, 313 Chaldaea, 872 Holda 1274 Delportia, and 7304 Namiki. The Minor Planet Bulletin (ISSN 1052-8091). Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers, Vol. 36, No. 2, p. 55–56 (2009), accessed July 27, 2020 .
- ↑ Rotation Period Determinations. The Minor Planet Bulletin (ISSN 1052-8091). Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers, Vol. 38, No. 4, p. 183-185 (2011), accessed July 27, 2020 .