632 Pyrrha

632 Pyrrha is a minor planet orbiting the Sun.

632 Pyrrha

Modelled shape of Pyrrha from its lightcurve
Discovery
Discovered by	August Kopff
Discovery site	Heidelberg
Discovery date	5 April 1907
Designations
MPC designation	(632) Pyrrha
Pronunciation	/ˈpɪrə/,[1]
Alternative designations	1907 YX
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	109.03 yr (39823 d)
Aphelion	3.1695 AU (474.15 Gm)
Perihelion	2.1583 AU (322.88 Gm)
Semi-major axis	2.6639 AU (398.51 Gm)
Eccentricity	0.18979
Orbital period (sidereal)	4.35 yr (1588.1 d)
Mean anomaly	33.9510°
Mean motion	0° 13m 36.084s / day
Inclination	2.2156°
Longitude of ascending node	356.505°
Argument of perihelion	252.767°
Physical characteristics
Synodic rotation period	4.1167 h (0.17153 d)
Absolute magnitude (H)	11.4

Photometric observations of the minor planet in 2011 gave a rotation period of 4.1167±0.001 h with an amplitude of 0.40±0.04 in magnitude. This result rules out previous determinations of the period.^[3]