(949) Hel
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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 .