(817) Annika
Asteroid (817) Annika |
|
---|---|
Properties of the orbit ( animation ) | |
Orbit type | Main belt asteroid |
Major semi-axis | 2.591 AU |
eccentricity | 0.18 |
Perihelion - aphelion | 2.126 AU - 3.056 AU |
Inclination of the orbit plane | 11.3 ° |
Length of the ascending node | 125.7 ° |
Argument of the periapsis | 284.4 ° |
Time of passage of the perihelion | May 11, 2011 |
Sidereal period | 4 a 62 d |
Mean orbital velocity | 18.4 km / s |
Physical Properties | |
Medium diameter | approx. 22 km |
Albedo | 0.17 |
Rotation period | 10 h 34 min |
Absolute brightness | 10.8 mag |
history | |
Explorer | Max Wolf |
Date of discovery | February 6, 1916 |
Another name | 1916 YW |
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. |
(817) Annika is an asteroid of the main belt that was discovered on February 6, 1916 by the German astronomer Max Wolf in Heidelberg .
The origin of the name is unknown.