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Discovery[1]
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| Discovered by | Reinmuth, K. |
| Discovery site | Heidelberg |
| Discovery date | October 10, 1931 |
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Designations
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| MPC designation | 1272 |
| Named after | Gefjon |
| Alternate name(s) | 1931 TZ1, A917 SF[1] |
| Adjective | Gefionian |
| Epoch August 27, 2011 (JD 2455800.5) | |
| Aphelion | 3.2090037 AU |
| Perihelion | 2.3555705 AU |
| Semi-major axis | 2.7822871 AU |
| Eccentricity | 0.1533690 |
| Orbital period | 4.6409951 yr (1695.1235 d) |
| Mean anomaly | 107.73940° |
| Inclination | 8.42341° |
| Longitude of ascending node | 321.58865° |
| Argument of perihelion | 4.19188° |
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Physical characteristics
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| Spectral type | SI (SMASSII)[1] |
| Absolute magnitude (H) | 12.8[1] |
1272 Gefion (1931 TZ1) is an asteroid from the asteroid belt discovered on October 10, 1931 by Reinmuth, K. at Heidelberg.
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