891 Gunhild
891 Gunhild (prov. designation: A918 KB or 1918 DQ) is a large background asteroid from the outer regions of the asteroid belt, that measures approximately 58 kilometers (36 miles) in diameter. It was discovered on 17 May 1918, by astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in southwest Germany. The dark D-type asteroid has a rotation period of 11.9 hours. Any reference of the asteroid's name to a person is unknown.
Modelled shape of Gunhild from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | M. F. Wolf |
| Discovery site | Heidelberg Obs. |
| Discovery date | 17 May 1918 |
| Designations | |
MPC designation | (891) Gunhild |
Named after | unknown |
Alternative designations | A918 KB · 1977 FH 1999 CF154 · A915 VE 1918 DQ · 1915 VE |
Minor planet category | main-belt · (outer) background |
| Orbital characteristics | |
| Epoch 31 May 2020 (JD 2459000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 101.70 yr (37,145 d) |
| Aphelion | 2.9444 AU |
| Perihelion | 2.7799 AU |
Semi-major axis | 2.8622 AU |
| Eccentricity | 0.0287 |
Orbital period (sidereal) | 4.84 yr (1,769 d) |
Mean anomaly | 232.57° |
Mean motion | 0° 12m 12.6s / day |
| Inclination | 13.559° |
Longitude of ascending node | 105.85° |
| 292.38° | |
| Physical characteristics | |
Mean diameter |
|
Synodic rotation period | 11.892±0.001 h |
| |
| 10.0 | |
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