(154) Bertha
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Asteroid (154) Bertha |
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| Properties of the orbit ( animation ) | |
| Orbit type | Outer main belt |
| Major semi-axis | 3,192 AU |
| eccentricity | 0.082 |
| Perihelion - aphelion | 2.929 AU - 3.455 AU |
| Inclination of the orbit plane | 21 ° |
| Length of the ascending node | 36.9 ° |
| Argument of the periapsis | 155.4 ° |
| Time of passage of the perihelion | October 22, 2008 |
| Sidereal period | 5 a 257 d |
| Mean orbital velocity | 16.6 km / s |
| Physical Properties | |
| Medium diameter | 185 km |
| Albedo | 0.0480 |
| Rotation period | 22 h 18 min |
| Absolute brightness | 7.58 mag |
| history | |
| Explorer | PM Henry |
| Date of discovery | November 4, 1875 |
| 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. | |
(154) Bertha is an asteroid of the main belt , which on 4 November 1875 by the French astronomer PM Henry was discovered.
The asteroid was named in honor of a sister of the French astronomer and author Camille Flammarion .