Astronomy:196 Philomela
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.png) A three-dimensional model of 196 Philomela based on its light curve. | |
| Discovery | |
|---|---|
| Discovered by | C. H. F. Peters, 1879 |
| Discovery date | 14 May 1879 |
| Designations | |
| (196) Philomela | |
| Pronunciation | /fɪloʊˈmiːlə/[1] |
| A879 JA; 1934 JO | |
| Minor planet category | Main belt |
| Adjectives | Philomelian /fɪloʊˈmiːliən/[1] |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 136.91 yr (50005 d) |
| |{{{apsis}}}|helion}} | 3.1723 astronomical unit|AU (474.57 Gm) |
| |{{{apsis}}}|helion}} | 3.0630 AU (458.22 Gm) |
| 3.1177 AU (466.40 Gm) | |
| Eccentricity | 0.017530 |
| Orbital period | 5.50 yr (2010.7 d) |
| Mean anomaly | 276.49° |
| Mean motion | 0° 10m 44.544s / day |
| Inclination | 7.2554° |
| Longitude of ascending node | 72.384° |
| 195.69° | |
| Earth MOID | 2.04771 AU (306.333 Gm) |
| Jupiter MOID | 1.83421 AU (274.394 Gm) |
| TJupiter | 3.204 |
| Physical characteristics | |
| Dimensions | 136.39±6.3 km[2] 145.29 ± 7.71 km[3] |
| Mass | (4.00 ± 1.53) × 1018 kg[3] |
| Mean density | 2.48 ± 1.02 g/cm3[3] |
| Rotation period | 8.3340 h (0.34725 d)[2] 8.332827 hours[4] |
| Geometric albedo | 0.2299±0.023 |
| S | |
| Absolute magnitude (H) | 6.54 |
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.[5]
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.[4][6]
To date there have been two reported Philomelian stellar occultations.[citation needed]
References
- ↑ 1.0 1.1 Philomel, Philomela (3rd ed.), Oxford University Press, September 2005, http://oed.com/search?searchType=dictionary&q=Philomel%2C+Philomela (Subscription or UK public library membership required.)
- ↑ 2.0 2.1 2.2 "196 Philomela". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=196;cad=1.
- ↑ 3.0 3.1 3.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73: pp. 98–118, doi:10.1016/j.pss.2012.03.009, Bibcode: 2012P&SS...73...98C. See Table 1.
- ↑ 4.0 4.1 Durech, J. et al. (April 2007), "Physical models of ten asteroids from an observers' collaboration network", Astronomy and Astrophysics 465 (1): pp. 331–337, doi:10.1051/0004-6361:20066347, Bibcode: 2007A&A...465..331D.
- ↑ 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.
External links
- 196 Philomela at AstDyS-2, Asteroids—Dynamic Site
- 196 Philomela at the JPL Small-Body Database
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