(220) Stephania
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Asteroid (220) Stephania |
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| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt |
| Major semi-axis | 2,348 AU |
| eccentricity | 0.258 |
| Perihelion - aphelion | 1.742 AU - 2.954 AU |
| Inclination of the orbit plane | 7.6 ° |
| Length of the ascending node | 258 ° |
| Argument of the periapsis | 78.7 ° |
| Time of passage of the perihelion | September 9, 2011 |
| Sidereal period | 3 a 219 d |
| Mean orbital velocity | 19.1 km / s |
| Physical Properties | |
| Medium diameter | 31 km |
| Albedo | 0.0726 |
| Rotation period | 18 h 12 min |
| Absolute brightness | 11.0 mag |
| Spectral class | XC |
| history | |
| Explorer | Johann Palisa |
| Date of discovery | May 19, 1881 |
| 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. | |
(220) Stephania is a asteroid of the main asteroid belt , which on 19 May 1881 by Johann Palisa the Observatory of Wien was discovered.
The asteroid was named after Stephanie of Belgium , who married Crown Prince Rudolf of Austria-Hungary eight days before it was discovered and now served as Crown Princess of the Danube Monarchy .
Stephania moves in an eccentric orbit around the Sun at a distance of 1.7412 ( perihelion ) to 2.9551 ( aphelion ) astronomical units in 3.5983 years . The orbit is 7.5853 ° inclined to the ecliptic , the orbital eccentricity is 0.2585.
Stephania has a diameter of 31 kilometers. It has a dark surface with an albedo of 0.073. It rotates around its own axis in around 18 hours and 12 minutes.