C/1991 L3 (Levy)
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| Discovery | |
|---|---|
| Discovered by | David H. Levy |
| Discovery site | Tucson, Arizona |
| Discovery date | 14 June 1991 |
| Designations | |
| 1991q, 1991 XI | |
| Orbital characteristics | |
| Epoch | 29 December 1991 (JD 2448619.5) |
| Observation arc | 587 days |
| Number of observations | 136 |
| Aphelion | 26.643 AU |
| Perihelion | 0.9827 AU |
| Semi-major axis | 13.813 AU |
| Eccentricity | 0.9289 |
| Orbital period | 51.34 years |
| Inclination | 19.190° |
| 329.432° | |
| Argument of periapsis | 41.479° |
| Last perihelion | 8 July 1991 |
| Next perihelion | 30 October 2042 |
| TJupiter | 1.517 |
| Earth MOID | 0.075 AU |
| Jupiter MOID | 0.050 AU |
| Physical characteristics | |
| Dimensions | < 16.4 km (10.2 mi) 11.6±0.2 km |
| 8.34 hours | |
| 0.04 (assumed) | |
| Comet total magnitude (M1) | 8.9 |
| 7.5 (1991 apparition) | |
C/1991 L3 (Levy) is a periodic comet discovered by David H. Levy on 14 June 1991. The comet has an orbital period of 51 years and thus fits the definition of Halley-type comets, which have orbital periods between 20 and 200 years.