196 Philomela
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| Discovery | |
|---|---|
| Discovered by | C. H. F. Peters, 1879 |
| Designations | |
| Minor planet category | Main belt |
| Orbital characteristics | |
| Aphelion | 3.189 AU |
| Perihelion | 3.035 AU |
| Semi-major axis | 3.112 AU |
| Eccentricity | 0.025 |
| Orbital period | 5.49 years |
| Inclination | 7.25° |
| Physical characteristics | |
| Dimensions | 145.29 ± 7.71[1] km |
| Mass | (4.00 ± 1.53) × 1018[1] kg |
| Mean density | 2.48 ± 1.02[1] g/cm3 |
| Rotation period | 8.332827[2] hours |
| Albedo | 0.228 |
| Spectral type | S |
| Absolute magnitude (H) | 6.54 |
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196 Philomela is a large and bright main-belt asteroid. It is an S-type asteroid. [citation needed]
It was discovered by C. H. F. Peters on May 14, 1879, in Clinton, New York and named after Philomela, the woman who became a nightingale in Greek mythology.[3]
In the late 1990s, a network of astronomers worldwide gathered light curve data that was ultimately used to derive the spin states and shape models of 10 new asteroids, including (196) Philomela. The shape model for this asteroid is described as asymmetrical and smooth, while the light curve varies by up to 0.4 in magnitude.[2][4]
To date there have been two reported Philomelian stellar occultations.[citation needed]
References
- ↑ 1.0 1.1 1.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73: 98-118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- ↑ 2.0 2.1 Durech, J. et al. (April 2007), "Physical models of ten asteroids from an observers' collaboration network", Astronomy and Astrophysics 465 (1): 331–337, Bibcode:2007A&A...465..331D, doi:10.1051/0004-6361:20066347.
- ↑ Schmadel Lutz D. Dictionary of Minor Planet Names (fifth edition), Springer, 2003. ISBN 3-540-00238-3.
- ↑ Durech, J.; Kaasalainen, M.; Marciniak, A.; Allen, W. H. et al. "Asteroid brightness and geometry," Astronomy and Astrophysics, Volume 465, Issue 1, April I 2007, pp. 331-337.
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