9919 Undset
 Orbit of 9919 Undset (blue), planets (red) and the Sun (black). The outermost planet visible is Jupiter. |
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| Discovery and designation | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Discovered by | C.-I. Lagerkvist | ||||||||||||
| Discovery date | August 22, 1979 | ||||||||||||
| Designations | |||||||||||||
| MPC designation | 9919 Undset | ||||||||||||
| Named after | Sigrid Undset | ||||||||||||
| Alternative names | 1979 QF1, 1990 SK18, 1994 UO2 | ||||||||||||
| Orbital characteristics | |||||||||||||
| Epoch October 27, 2007 | |||||||||||||
| Ap | 2.8803751 AU | ||||||||||||
| Peri | 1.8768487 AU | ||||||||||||
| Semi-major axis | 2.3786119 AU | ||||||||||||
| Eccentricity | 0.2109479 | ||||||||||||
| Orbital period | 1339.9352439 d | ||||||||||||
| Mean anomaly | 211.86761° | ||||||||||||
| Inclination | 1.60598° | ||||||||||||
| Longitude of ascending node | 212.68831° | ||||||||||||
| Argument of peri | 163.80517° | ||||||||||||
| Physical characteristics | |||||||||||||
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| Absolute magnitude (H) | 15.2 | ||||||||||||
9919 Undset is a main belt asteroid. It orbits the Sun once every 3.67 years.[1]
Discovered on August 22, 1979 by Claes-Ingvar Lagerkvist at the European Southern Observatory, it was given the provisional designation "1979 QF1". It was later renamed "Undset" after Sigrid Undset, winner of the 1928 Nobel Prize for Literature.[2]
References
- ^ "9919 Undset (1979 QF1)". JPL Small-Body Database Browser. NASA/JPL. Retrieved 2008-02-01.
- ^ MPC 46682 Minor Planet Center
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