62 Erato
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| Discovery | |
|---|---|
| Discovered by | Oskar Lesser and Wilhelm Julius Foerster |
| Discovery date | September 14, 1860 |
| Designations | |
| Named after | Erato |
| Alternative names | |
| Minor planet category | Main belt |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 550.315 Gm (3.679 AU) |
| Perihelion | 383.868 Gm (2.566 AU) |
| Semi-major axis | 467.092 Gm (3.122 AU) |
| Eccentricity | 0.178 |
| Orbital period | 2015.178 d (5.52 a) |
| Average orbital speed | 16.72 km/s |
| Mean anomaly | 161.828° |
| Inclination | 2.223° |
| Longitude of ascending node | 125.738° |
| Argument of perihelion | 273.285° |
| Physical characteristics | |
| Dimensions | 95.4 km |
| Mass | 9.1×1017 kg |
| Mean density | ? g/cm³ |
| Equatorial surface gravity | 0.0267 m/s² |
| Escape velocity | 0.0504 km/s |
| Rotation period | 5.675 ± 0.001 h[1] |
| Albedo | 0.061 [2] |
| Temperature | ~158 K |
| Spectral type | C? |
| Absolute magnitude (H) | 8.76 |
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62 Erato (/ˈɛrətoʊ/ ERR-ə-toh) is a large and dark, probably carbonaceous Themistian asteroid.[citation needed] It is a member of the Eos family.[1]
Erato is the first asteroid to have been credited with co-discoverers, Oskar Lesser and Wilhelm Forster, who discovered it on September 14, 1860 from the Berlin Observatory. It was their first and only asteroid discovery. The name was chosen by Johann Franz Encke, director of the observatory, and refers to Erato, the Muse of lyric poetry in Greek mythology.[3]
References
- ↑ 1.0 1.1 Alvarez-Candal, Alvaro et al. (December 2004), "Rotational lightcurves of asteroids belonging to families", Icarus 172 (2): 388–401, Bibcode:2004Icar..172..388A, doi:10.1016/j.icarus.2004.06.008.
- ↑ Asteroid Data Sets
- ↑ Lutz D. Schmadel, Dictionary of Minor Planet Names, p.21.
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