196 Philomela

196 Philomela is a large and bright main-belt asteroid. It is an S-type asteroid. ^{[citation needed]}

196 Philomela

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
MPC designation	(196) Philomela
Pronunciation	/fɪloʊˈmiːlə/[1]
Alternative designations	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)
Aphelion	3.1723 AU (474.57 Gm)
Perihelion	3.0630 AU (458.22 Gm)
Semi-major axis	3.1177 AU (466.40 Gm)
Eccentricity	0.017530
Orbital period (sidereal)	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°
Argument of perihelion	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]
Synodic rotation period	8.3340 h (0.34725 d)[2] 8.332827 hours[4]
Geometric albedo	0.2299±0.023
Spectral type	S
Absolute magnitude (H)	6.54

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. "Philomel, Philomela". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
2. "196 Philomela". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
3. Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, vol. 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
4. Durech, J.; et al. (April 2007), "Physical models of ten asteroids from an observers' collaboration network", Astronomy and Astrophysics, vol. 465, no. 1, pp. 331–337, Bibcode:2007A&A...465..331D, doi:10.1051/0004-6361:20066347.
5. Schmadel Lutz D. Dictionary of Minor Planet Names (fifth edition), Springer, 2003. ISBN 3-540-00238-3.
6. 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
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 196 Philomela at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters