(1009) siren
Asteroid (1009) siren |
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Properties of the orbit ( animation ) | |
Orbit type | Main belt asteroid |
Major semi-axis | 2.6234 AU |
eccentricity | 0.4582 |
Perihelion - aphelion | 1.4214 AU - 3.8255 AU |
Inclination of the orbit plane | 15.837 ° |
Sidereal period | 4,249 a |
Mean orbital velocity | 18.39 km / s |
Physical Properties | |
Medium diameter | ? km |
Albedo | ? |
Rotation period | ? H |
Absolute brightness | 13.9 likes |
Spectral class | ? |
history | |
Explorer | K. Reinmuth |
Date of discovery | October 31, 1923 |
Another name | 1923 PE |
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. |
(1009) Sirene is an asteroid of the main belt that was discovered on October 31, 1923 by the German astronomer Karl Wilhelm Reinmuth , who worked at the observatory on the Königstuhl near Heidelberg .
The asteroid is named after the mythological figures of the sirens .