196 Philomela

From Wikipedia, the free encyclopedia
Jump to: navigation, search
196 Philomela
196Philomela (Lightcurve Inversion).png
A three-dimensional model of 196 Philomela based on its light curve.
Discovered by C. H. F. Peters, 1879
Main belt
Orbital characteristics
Aphelion 3.189 AU
Perihelion 3.035 AU
3.112 AU
Eccentricity 0.025
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
8.332827[2] hours
Albedo 0.228
Spectral type

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]


  1. ^ a b c 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. ^ a b 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. 
  3. ^ Schmadel Lutz D. Dictionary of Minor Planet Names (fifth edition), Springer, 2003. ISBN 3-540-00238-3.
  4. ^ 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.