580 Selene

580 Selene
Discovery
Discovered by M. F. Wolf
Discovery site Heidelberg
Discovery date 17 December 1905
Designations
MPC designation (580) Selene
1905 SE
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 110.29 yr (40283 d)
Aphelion 3.4971 AU (523.16 Gm)
Perihelion 2.9628 AU (443.23 Gm)
3.2300 AU (483.20 Gm)
Eccentricity 0.082713
5.81 yr (2120.3 d)
45.310°
0° 10m 11.244s / day
Inclination 3.6614°
99.154°
334.542°
Physical characteristics
Mean radius
 22.895±1.6 km
9.47 h (0.395 d)
0.1218±0.019
10.3

    580 Selene is a minor planet orbiting the Sun in the asteroid belt. The name Selene is that of an ancient Greek goddess of the Moon.

    This body orbits the Sun nearly midway between the orbits of Mars and Jupiter. The orbital eccentricity is slightly lower than that of Mars. Based on its light curve, Selene has an estimated rotation period of 0.3947±0.0004 days, or just under 9.5 hours.[2] During each rotation, the apparent magnitude varies by 0.27. The approximate diameter of this asteroid is 46 km.[3] (Some sources list a diameter of up to 56 km.) The albedo is about 7%, comparable to that of the Earth's Moon.

    References

    1. ↑ "580 Selene (1905 SE)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.
    2. ↑ Antonini, Pierre (2005-05-16). "Courbes de rotation d'astéroïdes et de comètes" (in French). Observatoire de Genève. Archived from the original on 8 July 2006. Retrieved 2006-06-12.
    3. ↑ "Occultation by (580) Selene". RASNZ Occultation Section. 2005-01-18. Archived from the original on 2005-12-21. Retrieved 2006-06-12.


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