(580) Selene ( Latin Selene ) - an asteroid of the main belt , which was discovered on December 17, 1905 by the German astronomer Max Wolf at the Heidelberg-Königstuhl Observatory and named after Selena , the ancient Greek goddess of the moon. The asteroid’s orbit passes approximately in the middle of the distance between the orbits of Mars and Jupiter; the eccentricity is slightly lower than that of Mars. Approximate turnaround time on its axis: about 9.5 hours [1] . Approximate diameter: 46 km [2] . Albedo is about 7%, comparable to the moon. The Tisseran parameter relative to Jupiter is 3.178.
| (580) Selena | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | Max Wolf |
| Place of discovery | Heidelberg-Königstuhl Observatory |
| Discovery date | December 17, 1905 |
| Eponym | Selena |
| Alternative notation | 1905 SE , 1950 RQ1 |
| Category | Main ring |
| Orbital characteristics | |
| Age of May 23, 2014 JD 2456800.5 | |
| Eccentricity ( e ) | 0.083034669222 |
| Semimajor axis ( a ) | 483.421 million km (3.231471202995 A.E.) |
| Perihelion ( q ) | 443.28 million km (2,963147060554 a.u.) |
| Aphelion ( Q ) | 523.562 million km (3,499795345436 A.E.) |
| Circulation Period ( P ) | 2121,773 days (5,809 g. ) |
| Average orbital speed | 16.54 km / s |
| Inclination ( i ) | 3,661459104095 ° |
| Longitude node (Ω) | 99.16011250079 ° |
| Perihelion Argument (ω) | 334.1222051234 ° |
| Median Anomaly ( M ) | 269.8962296093 ° |
| physical characteristics | |
| Diameter | 45.79 km |
| Rotation period | 9.47 h |
| Apparent magnitude | 16.02 m (current) |
| Absolute magnitude | 10.1 m |
| Albedo | 0.1218 |
| Current distance from the sun | 3.375 a. e. |
| Current distance from earth | 2.997 a. e. |
See also
- Asteroid List
- Classifications of Minor Planets
Notes
- ↑ Antonini, Pierre Courbes de rotation d'astéroïdes et de comètes (Fr.) (link unavailable) . Observatoire de Genève (16 mai 2005). Date of treatment June 12, 2006. Archived July 8, 2006.
- ↑ Occultation by (580) Selene (inaccessible link) . RASNZ Occultation Section (January 18, 2005). Date of treatment June 12, 2006. Archived December 21, 2005.