(1557) Roehla
Asteroid (1557) Roehla |
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Properties of the orbit ( animation ) | |
Orbit type | Main belt asteroid |
Asteroid family | Eos family |
Major semi-axis | 3.0145 AU |
eccentricity | 0.1036 |
Perihelion - aphelion | 2.7021 AU - 3.3269 AU |
Inclination of the orbit plane | 10.304 ° |
Sidereal period | 5.234 a |
Mean orbital velocity | 17.15 km / s |
Physical Properties | |
Medium diameter | approx. 19 km |
Albedo | ? |
Rotation period | ? H |
Absolute brightness | 11.4 mag |
Spectral class | ? |
history | |
Explorer | K. Reinmuth |
Date of discovery | January 14, 1942 |
Another name | 1942 AD, 1930 YS, 1095 RF 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. |
(1557) Roehla is an asteroid of the main belt that was discovered on January 14, 1942 by the German astronomer Karl Wilhelm Reinmuth in Heidelberg .
The asteroid is named after the German-Swedish doctor Lars Ruehl in Heidelberg, out of gratitude for the health of the discoverer.