577 Rhea

Not to be confused with Saturn's moon Rhea.

577 Rhea is a minor planet orbiting the Sun. It is named after Rhea, one of the Titans in Greek mythology. The name may have been inspired by the asteroid's provisional designation 1905 RH.

577 Rhea

Modelled shape of Rhea from its lightcurve
Discovery
Discovered by	M. F. Wolf
Discovery site	Heidelberg
Discovery date	20 October 1905
Designations
MPC designation	(577) Rhea
Pronunciation	/ˈriːə/[1]
Alternative designations	1905 RH
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	110.32 yr (40296 d)
Aphelion	3.5931 AU (537.52 Gm)
Perihelion	2.6297 AU (393.40 Gm)
Semi-major axis	3.1114 AU (465.46 Gm)
Eccentricity	0.15481
Orbital period (sidereal)	5.49 yr (2004.6 d)
Mean anomaly	105.219°
Mean motion	0° 10m 46.524s / day
Inclination	5.2964°
Longitude of ascending node	328.579°
Argument of perihelion	330.784°
Physical characteristics
Mean radius	19.765±1.15 km
Synodic rotation period	12.249 h (0.5104 d)
Geometric albedo	0.1792±0.023
Absolute magnitude (H)	9.4