Astronomy:420 Bertholda
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Short description: Main-belt asteroid
| Discovery | |
|---|---|
| Discovered by | Max Wolf |
| Discovery date | 7 September 1896 |
| Designations | |
| (420) Bertholda | |
| 1896 CY | |
| Minor planet category | Main belt (Cybele) |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 115.96 yr (42353 d) |
| |{{{apsis}}}|helion}} | 3.5216 astronomical unit|AU (526.82 Gm) |
| |{{{apsis}}}|helion}} | 3.3110 AU (495.32 Gm) |
| 3.4163 AU (511.07 Gm) | |
| Eccentricity | 0.030818 |
| Orbital period | 6.31 yr (2306.4 d) |
| Mean anomaly | 220.0218° |
| Mean motion | 0° 9m 21.924s / day |
| Inclination | 6.6874° |
| Longitude of ascending node | 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] |
| Rotation period | 11.04 h (0.460 d) |
| Geometric albedo | 0.0420±0.004 |
| P | |
| Absolute magnitude (H) | 8.3 |
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.
References
- ↑ 1.0 1.1 "420 Bertholda (1896 CY)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=420;cad=1.
- ↑ 2.0 2.1 2.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73 (1): 98–118, doi:10.1016/j.pss.2012.03.009, Bibcode: 2012P&SS...73...98C. 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, doi:10.1006/icar.2000.6507, Bibcode: 2001Icar..149..190L.
External links
- 420 Bertholda at AstDyS-2, Asteroids—Dynamic Site
- 420 Bertholda at the JPL Small-Body Database
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