13P/Olbers
13P/Olbers is a periodic comet with an orbital period of 69 years. It fits the classical definition of a Halley-type comet with (20 years < period < 200 years). The comet had last been seen in 1956 and the next perihelion is on 30 June 2024.
Sketch of 13P/Olbers on 14 October 1887 by William Robert Brooks | |
| Discovery | |
|---|---|
| Discovered by | Heinrich Olbers |
| Discovery date | March 6, 1815 |
| Designations | |
Alternative designations | 1815 E1; 1887 Q1; 1887 V; 1887f; 1956 A1; 1956 IV; 1956a |
| Orbital characteristics | |
| Epoch | 2024-06-19 (JD 2460480.5) |
| Aphelion | 32.56 AU |
| Perihelion | 1.175 AU |
| Semi-major axis | 16.87 AU |
| Eccentricity | 0.9303 |
| Orbital period | 69.3 yr 68y 11d (perihelion to perihelion) |
| Inclination | 44.67° |
Longitude of ascending node | 85.8° |
| Argument of periapsis | 64.4° |
| Last perihelion | June 19, 1956 |
| Next perihelion | June 30, 2024 |
| Earth MOID | 0.466 AU |
| Jupiter MOID | 0.692 AU |
| Comet total magnitude (M1) | 6.9 |
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