(722) Frieda
Asteroid (722) Frieda |
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Properties of the orbit ( animation ) | |
Orbit type | Main belt asteroid |
Major semi-axis | 2.1716 AU |
eccentricity | 0.1452 |
Perihelion - aphelion | 1.8563 AU - 2.487 AU |
Inclination of the orbit plane | 5.639 ° |
Sidereal period | 3,200 a |
Mean orbital velocity | 20.21 km / s |
Physical Properties | |
Medium diameter | approx. 8 km |
Albedo | ? |
Rotation period | ? H |
Absolute brightness | 12.4 mag |
Spectral class | ? |
history | |
Explorer | J. Palisa |
Date of discovery | October 18, 1911 |
Another name | 1911 NA, 1946 SH |
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. |
(722) Frieda is an asteroid of the main belt that was discovered in Vienna on October 18, 1911 by the Austrian astronomer Johann Palisa .
The asteroid was named after the granddaughter of the Austrian astronomer Karl Hillebrand .