(1178) Irmela
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.