230 Athamantis

230 Athamantis

A three-dimensional model of 230 Athamantis based on its light curve.
Discovery
Discovered by K. de Ball
Discovery date September 3, 1882
Designations
Named after
 Helle
1949 WG
Main belt
Orbital characteristics
Epoch 30 January 2005 (JD 2453400.5)
Aphelion 378.299 Gm (2.529 AU)
Perihelion 334.395 Gm (2.235 AU)
356.347 Gm (2.382 AU)
Eccentricity 0.062
1342.801 d (3.68 a)
19.3 km/s
70.608°
Inclination 9.435°
239.979°
138.926°
Physical characteristics
Dimensions 110.17 ± 4.57[1] km
Mass (1.89 ± 0.19) × 1018[1] kg
Mean density
 2.69 ± 0.43[1] g/cm3
23.99[2] h
Albedo 0.181
Spectral type
 S
7.35

    230 Athamantis is a fairly large main-belt asteroid that was discovered by the German-Austrian astronomer K. de Ball on September 3, 1882, in Bothkamp. It was his only asteroid discovery. The asteroid was named after Athamantis, daughter of Athamas the mythical Greek king of Orchomenus.

    Photometric observations of this asteroid gave a light curve with a period of 23.99 hours and a brightness variation of more than 0.20 in magnitude.[2] It has the spectrum of an S-type asteroid.

    References

    1. ↑ 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.
    2. ↑ 2.0 2.1 Zeigler, K. W.; Florence, W. B. (June 1985), "Photoelectric photometry of asteroids 9 Metis, 18 Melpomene, 60 Echo, 116 Sirona, 230 Athamantis, 694 Ekard, and 1984 KD", Icarus 62: 512–517, Bibcode:1985Icar...62..512Z, doi:10.1016/0019-1035(85)90191-5.

    External links