(4159) Freeman
Asteroid (4159) Freeman |
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Properties of the orbit ( animation ) | |
Orbit type | Main belt asteroid |
Major semi-axis | 2.5502 AU |
eccentricity | 0.074 |
Perihelion - aphelion | 2.361 AU - 2.7398 AU |
Inclination of the orbit plane | 15.19 ° |
Length of the ascending node | 91.32 ° |
Sidereal period | 4.07 a |
Physical Properties | |
Medium diameter | 17.31 km |
Albedo | 0.2822 |
Rotation period | 4 h 24 min |
Absolute brightness | 10.8 mag |
history | |
Explorer | Eleanor Helin |
Date of discovery | April 5, 1989 |
Another name | 1989 GK, 1937 NT, 1938 WH |
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. |
(4159) Freeman is a main belt asteroid discovered on April 5, 1989 by Eleanor Helin at the Palomar Observatory . The asteroid has a relatively bright surface with an albedo of around 0.28.
The asteroid was named after Ann Freeman , the executive secretary of the Seismological Laboratory at Caltech .
Individual evidence
- ^ Lutz D. Schmadel: Dictionary of minor planet names . Vol. 1. Springer, Berlin & New York 2003
Web links
- (4159) Freeman in the Small-Body Database of the Jet Propulsion Laboratory .