420 Bertholda
Bertholda (minor planet designation: 420 Bertholda) is a very large main-belt asteroid. It was discovered by Max Wolf on September 7, 1896, in Heidelberg, Germany. The object is part of the Cybele asteroid group,[3] and is classified as a P-type asteroid.
| Discovery | |
|---|---|
| Discovered by | Max Wolf |
| Discovery date | 7 September 1896 |
| Designations | |
| (420) Bertholda | |
| 1896 CY | |
| Main belt (Cybele) | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 115.96 yr (42353 d) |
| Aphelion | 3.5216 AU (526.82 Gm) |
| Perihelion | 3.3110 AU (495.32 Gm) |
| 3.4163 AU (511.07 Gm) | |
| Eccentricity | 0.030818 |
| 6.31 yr (2306.4 d) | |
| 220.0218° | |
| 0° 9m 21.924s / day | |
| Inclination | 6.6874° |
| 242.661° | |
| 236.020° | |
| Earth MOID | 2.33214 AU (348.883 Gm) |
| Jupiter MOID | 1.58341 AU (236.875 Gm) |
| TJupiter | 3.132 |
| Physical characteristics | |
| Dimensions | 141.25±6.9 km[1] 141.54 ± 2.08 km[2] |
| Mass | (1.48 ± 0.09) × 1019 kg[2] |
Mean density | 9.96 ± 0.75 g/cm3[2] |
| 11.04 h (0.460 d) | |
| 0.0420±0.004 | |
| P | |
| 8.3 | |
References
- "420 Bertholda (1896 CY)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 10 May 2016.
- Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73 (1): 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009, S2CID 119226456. See Table 1.
- Lagerkvist, Claes-Ingvar; et al. (January 2001), "A Study of Cybele Asteroids. I. Spin Properties of Ten Asteroids", Icarus, 149 (1): 190–197, Bibcode:2001Icar..149..190L, doi:10.1006/icar.2000.6507.
External links
- 420 Bertholda at AstDyS-2, Asteroids—Dynamic Site
- 420 Bertholda at the JPL Small-Body Database
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