280 Philia

Philia (minor planet designation: 280 Philia) is a fairly large Main belt asteroid.[2] It was discovered by Johann Palisa on 29 October 1888 at the Vienna Observatory.

280 Philia

Discovery
Discovered by	Johann Palisa
Discovery date	29 October 1888
Designations
MPC designation	(280) Philia
Pronunciation	/ˈfɪliə/
Named after	Philia
Minor planet category	Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	126.17 yr (46083 d)
Aphelion	3.26133 AU (487.888 Gm)
Perihelion	2.62787 AU (393.124 Gm)
Semi-major axis	2.94460 AU (440.506 Gm)
Eccentricity	0.10756
Orbital period	5.05 yr (1845.6 d)
Mean anomaly	52.7987°
Mean motion	0° 11^m 42.212^s / day
Inclination	7.44582°
Longitude of ascending node	9.91179°
Argument of perihelion	90.0510°
Physical characteristics
Dimensions	45.69±2.0 km
Rotation period	70.26 h (2.928 d)
Geometric albedo	0.0444±0.004
Absolute magnitude (H)	10.9

References

1. "280 Philia". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016.
2. James R. Lewis. The Encyclopedia of Heavenly Influences. p. 521. Retrieved 6 April 2015.

External links

• 280 Philia at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 280 Philia at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters