420 Bertholda
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| Discovery | |
|---|---|
| Discovered by | Max Wolf |
| Discovery date | September 7, 1896 |
| Designations | |
| Alternative names | 1896 CY |
| Minor planet category | Main belt (Cybele) |
| Orbital characteristics | |
| Epoch 23 July 2010 (JD 2455400,5) | |
| Aphelion | 3,55326416 AU |
| Perihelion | 3,3073759 AU |
| Semi-major axis | 3,43032003 AU |
| Eccentricity | 0.036 |
| Orbital period | 2320.6 d (6.35 a) |
| Average orbital speed | 16.07 km/s |
| Mean anomaly | 246.1262° |
| Inclination | 6.642° |
| Longitude of ascending node | 243.086° |
| Argument of perihelion | 228.387° |
| Physical characteristics | |
| Dimensions | 141.54 ± 2.08[1] km |
| Mass | (1.48 ± 0.09) × 1019[1] kg |
| Mean density | 9.96 ± 0.75[1] g/cm3 |
| Rotation period | 11,04 h |
| Albedo | 0,042 |
| Spectral type | P |
| Absolute magnitude (H) | 8.31 |
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420 Bertholda is a very large main-belt asteroid. It is classified as a P-type asteroid.
It was discovered by Max Wolf on September 7, 1896, in Heidelberg.
References
- ↑ 1.0 1.1 1.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73: 98-118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
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