(949) Hel
Asteroid (949) Hel |
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Properties of the orbit ( animation ) | |
Orbit type | Main belt asteroid |
Major semi-axis | 2.9957 AU |
eccentricity | 0.1997 |
Perihelion - aphelion | 2.3975 AU - 3.5939 AU |
Inclination of the orbit plane | 10.696 ° |
Sidereal period | 5.185 a |
Mean orbital velocity | 17.209 km / s |
Physical Properties | |
Medium diameter | 69.16 km |
Albedo | 0.049 |
Rotation period | ? H |
Absolute brightness | 9,702 likes |
Spectral class | ? |
history | |
Explorer | Max Wolf |
Date of discovery | 1921 |
Another name | 1921 JK, 1952 DN, 1954 SN 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. |
(949) Hel is an asteroid of the main belt that was discovered on March 11, 1921 by the German astronomer Max Wolf in Heidelberg .
The name is derived from the Norse goddess Hel .