(722) Frieda
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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 .