(285) Regina
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Asteroid (285) Regina |
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| Properties of the orbit ( animation ) | |
| Orbit type | Outer main belt |
| Major semi-axis | 3,082 AU |
| eccentricity | 0.208 |
| Perihelion - aphelion | 2.44 AU - 3.724 AU |
| Inclination of the orbit plane | 17.6 ° |
| Length of the ascending node | 311.4 ° |
| Argument of the periapsis | 14.7 ° |
| Time of passage of the perihelion | February 7, 2009 |
| Sidereal period | 5 a 150 d |
| Mean orbital velocity | 16.8 km / s |
| Physical Properties | |
| Medium diameter | 45.13 km |
| Albedo | 0.0547 |
| Rotation period | 9 h 33 min |
| Absolute brightness | 10.5 mag |
| history | |
| Explorer | A. Charlois |
| Date of discovery | August 3, 1889 |
| 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. | |
(285) Regina is an asteroid of the outer main asteroid belt , which was discovered on August 3, 1889 by Auguste Charlois at the Observatory of Nice .
Regina moves at a distance of 2.4376 ( perihelion ) to 3.0816 ( aphelion ) astronomical units around the sun in 5.4097 years . The orbit is 17.6204 ° inclined to the ecliptic , the orbital eccentricity is 0.2090.
Regina has a diameter of 45 kilometers. It has a dark surface with an albedo of 0.055.
See also
Web links
- Asteroid Regina: Discovery Circumstances according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics, Cambridge, USA
- (285) Regina in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).