(577) Rhea ( German Rhea ) - an asteroid of the main belt , which was discovered on October 20, 1905 by the German astronomer Max Wolf at the Heidelberg Observatory and named after Rhea , the ancient Greek titanide.
| (577) Rhea | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | Max Wolf |
| Place of discovery | Heidelberg Observatory |
| Discovery date | October 20, 1905 |
| Eponym | Rhea |
| Alternative notation | 1905 RH , 1943 QD, 1949 SF1, 1952 DC, A912 AC |
| Category | Main ring |
| Orbital characteristics | |
| Age of May 23, 2014 JD 2456800.5 | |
| Eccentricity ( e ) | 0.154613810240 |
| Semimajor axis ( a ) | 465.533 million km (3.111898554899 AU ) |
| Perihelion ( q ) | 393.556 million km (2,630756062246 AU) |
| Aphelion ( Q ) | 537.511 million km (3,593041047552 a.u.) |
| Circulation Period ( P ) | 2005.102 days (5.49 g ) |
| Average orbital speed | 16.783 km / s |
| Inclination ( i ) | 5.296582808215 ° |
| Longitude node (Ω) | 328.5897049479 ° |
| Perihelion Argument (ω) | 330.9773755911 ° |
| Median Anomaly ( M ) | 321.4273805505 ° |
| physical characteristics | |
| Diameter | 39.53 km |
| Rotation period | 12,249 h |
| Apparent magnitude | 15.06 m (current) |
| Absolute magnitude | 9.3 m |
| Albedo | 0.1792 |
| Current distance from the sun | 2,896 a. e. |
| Current distance from earth | 3,153 a. e. |
The Tisseran parameter relative to Jupiter is 3.193.
See also
- List of asteroids ( 501-600 )
- Classifications of Minor Planets