Discovery | |
---|---|
Discovered by | August Kopff |
Discovery site | Heidelberg |
Discovery date | 5 April 1907 |
Designations | |
(632) Pyrrha | |
Pronunciation | /ˈpɪrə/, [1] |
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) |
2.6639 AU (398.51 Gm) | |
Eccentricity | 0.18979 |
4.35 yr (1588.1 d) | |
33.9510 ° | |
0° 13m 36.084s / day | |
Inclination | 2.2156° |
356.505° | |
252.767° | |
Physical characteristics | |
4.1167 h (0.17153 d) | |
11.4 | |
632 Pyrrha is a minor planet orbiting the Sun.
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]