309 Fraternitas

Fraternitas (minor planet designation: 309 Fraternitas) is a typical Main belt asteroid.[2] It was discovered by Johann Palisa on 6 April 1891 in Vienna.

309 Fraternitas

Discovery
Discovered by	Johann Palisa
Discovery date	6 April 1891
Designations
MPC designation	(309) Fraternitas
Pronunciation	/frəˈtɜːrnɪtæs/
Named after	fraternity
Minor planet category	Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	125.03 yr (45667 d)
Aphelion	2.97127 AU (444.496 Gm)
Perihelion	2.35779 AU (352.720 Gm)
Semi-major axis	2.66453 AU (398.608 Gm)
Eccentricity	0.11512
Orbital period	4.35 yr (1588.7 d)
Mean anomaly	190.308°
Mean motion	0° 13^m 35.785^s / day
Inclination	3.71999°
Longitude of ascending node	356.574°
Argument of perihelion	310.477°
Physical characteristics
Dimensions	45.32±3.3 km
Rotation period	22.398 h (0.9333 d)
Geometric albedo	0.0595±0.010
Absolute magnitude (H)	10.7

References

1. "309 Fraternitas". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016.
2. "Osculating elements from astorb-database for 309 Fraternitas". The Centaur Research Project. Retrieved 5 April 2015.

External links

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