23 Thalia
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Discovery
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| Discovered by | J. R. Hind |
| Discovery date | December 15, 1852 |
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Designations
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| Alternative names | 1938 CL; 1974 QT2 |
| Minor planet category |
Main belt |
| Epoch June 14, 2006 (JD 2453900.5) | |
| Aphelion | 484.663 Gm (3.240 AU) |
| Perihelion | 301.483 Gm (2.015 AU) |
| Semi-major axis | 393.073 Gm (2.628 AU) |
| Eccentricity | 0.233 |
| Orbital period | 1555.679 d (4.26 a) |
| Average orbital speed | 18.12 km/s |
| Mean anomaly | 328.687° |
| Inclination | 10.145° |
| Longitude of ascending node | 67.228° |
| Argument of perihelion | 59.311° |
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Physical characteristics
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| Dimensions | 107.5 km |
| Mass | 1.3×1018? kg |
| Mean density | 2.0? g/cm³ |
| Equatorial surface gravity | 0.0300? m/s² |
| Escape velocity | 0.0568? km/s |
| Rotation period | 0.5128 d (12.308 h) [1] |
| Albedo | 0.2536 (geometric)[2] |
| Temperature | ~164 K |
| Spectral type | S |
| Apparent magnitude | 9.18 (brightest) |
| Absolute magnitude | 6.95 |
23 Thalia (pronounced /θəˈlaɪə/, Greek: Θάλεια) is a large main belt asteroid.
It was discovered by J. R. Hind on December 15, 1852 and named after Thalia, the Muse of comedy and pastoral poetry in Greek mythology.
[edit] References
[edit] External links
- Orbital simulation from JPL (Java) / Ephemeris
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