Astronomy:577 Rhea
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_Rhea.png) Modelled shape of Rhea from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | M. F. Wolf |
| Discovery site | Heidelberg |
| Discovery date | 20 October 1905 |
| Designations | |
| (577) Rhea | |
| Pronunciation | /ˈriːə/[1] |
| 1905 RH | |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 110.32 yr (40296 d) |
| |{{{apsis}}}|helion}} | 3.5931 astronomical unit|AU (537.52 Gm) |
| |{{{apsis}}}|helion}} | 2.6297 AU (393.40 Gm) |
| 3.1114 AU (465.46 Gm) | |
| Eccentricity | 0.15481 |
| Orbital period | 5.49 yr (2004.6 d) |
| Mean anomaly | 105.219° |
| Mean motion | 0° 10m 46.524s / day |
| Inclination | 5.2964° |
| Longitude of ascending node | 328.579° |
| 330.784° | |
| Physical characteristics | |
| Mean radius | 19.765±1.15 km |
| Rotation period | 12.249 h (0.5104 d) |
| Geometric albedo | 0.1792±0.023 |
| Absolute magnitude (H) | 9.4 |
Rhea (minor planet designation: 577 Rhea) is a minor planet orbiting the Sun. It is named after Rhea, one of the Titans in Greek mythology. The name may have been inspired by the asteroid's provisional designation 1905 RH.
References
- ↑ Noah Webster (1884) A Practical Dictionary of the English Language
- ↑ "577 Rhea (1905 RH)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=577;cad=1.
External links
- 577 Rhea at AstDyS-2, Asteroids—Dynamic Site
- 577 Rhea at the JPL Small-Body Database
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