561 Ingwelde

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561 Ingwelde
Discovery
Discovered by M. F. Wolf
Discovery site Heidelberg
Discovery date 26 March 1905
Designations
1905 QG
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 110.90 yr (40505 d)
Aphelion 3.5428 AU (530.00 Gm)
Perihelion 2.8069 AU (419.91 Gm)
3.1748 AU (474.94 Gm)
Eccentricity 0.11589
5.66 yr (2066.2 d)
326.466°
0° 10m 27.228s / day
Inclination 1.5440°
159.502°
315.780°
Earth MOID 1.82204 AU (272.573 Gm)
Jupiter MOID 1.55475 AU (232.587 Gm)
Jupiter Tisserand parameter 3.190
Physical characteristics
Mean radius
12.25±0.8 km
12.012 h (0.5005 d)
0.0966±0.014
11.21

561 Ingwelde is a Themistian asteroid. In light of Max Wolf's practice ca. 1905 of naming his discoveries after operatic heroines, it is most likely named after the title character of Ingwelde, an opera by Max von Schillings premiered in Karlsruhe in 1894.[2]

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