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.

420 Bertholda
Discovery
Discovered byMax Wolf
Discovery date7 September 1896
Designations
(420) Bertholda
1896 CY
Main belt (Cybele)
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc115.96 yr (42353 d)
Aphelion3.5216 AU (526.82 Gm)
Perihelion3.3110 AU (495.32 Gm)
3.4163 AU (511.07 Gm)
Eccentricity0.030818
6.31 yr (2306.4 d)
220.0218°
0° 9m 21.924s / day
Inclination6.6874°
242.661°
236.020°
Earth MOID2.33214 AU (348.883 Gm)
Jupiter MOID1.58341 AU (236.875 Gm)
TJupiter3.132
Physical characteristics
Dimensions141.25±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
    1. "420 Bertholda (1896 CY)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 10 May 2016.
    2. Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
    3. 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.


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