551 Ortrud

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551 Ortrud
Discovery
Discovered by Max Wolf
Discovery site Heidelberg
Discovery date 16 November 1904
Designations
MPC designation (551) Ortrud
1904 PM
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 111.06 yr (40565 d)
Aphelion 3.3325 AU (498.53 Gm)
Perihelion 2.6019 AU (389.24 Gm)
2.9672 AU (443.89 Gm)
Eccentricity 0.12311
5.11 yr (1866.9 d)
306.688°
0° 11m 34.188s / day
Inclination 0.39727°
6.0272°
68.010°
Earth MOID 1.61525 AU (241.638 Gm)
Jupiter MOID 1.92173 AU (287.487 Gm)
Jupiter Tisserand parameter 3.252
Physical characteristics
Mean radius
39.23±2.05 km
13.05 h (0.544 d)
0.0426±0.005
9.57

551 Ortrud is a minor planet orbiting the Sun. It is located in the Main Belt. In light of the practice of the discover ca. 1904 to name his asteroids after female characters in opera, it is likely that Ortrud is named after a character in Richard Wagner's opera Lohengrin.

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