(1178) Irmela
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Asteroid (1178) Irmela |
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|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.6796 AU |
| eccentricity | 0.1836 |
| Perihelion - aphelion | 2.1876 AU - 3.1716 AU |
| Inclination of the orbit plane | 6.952 ° |
| Sidereal period | 4,386 a |
| Mean orbital velocity | 18.20 km / s |
| Physical Properties | |
| Medium diameter | 19.10 km |
| Albedo | 0.092 |
| Rotation period | 19,170 h |
| Absolute brightness | 11,939 likes |
| history | |
| Explorer | M. Wolf |
| Date of discovery | March 13, 1931 |
| Another name | 1931 EC, 1940 GC, 1962 JD |
| 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. | |
(1178) Irmela is an asteroid of the main belt that was discovered on March 13, 1931 by the German astronomer Max Wolf in Heidelberg .
The asteroid is named after Irmela Ruska , b. Geigis (1917–2009), the wife of the German Nobel Prize in Physics, Ernst Ruska , whose maternal uncle was Max Wolf.