43P/Wolf–Harrington
43P/Wolf–Harrington is a periodic comet discovered on December 22, 1924, by Max Wolf in Heidelberg, Germany. In 2019 it passed within 0.065 AU (9,700,000 km; 6,000,000 mi) of Jupiter, which lifted the perihelion point and increased the orbital period to 9 years.
| Discovery | |
|---|---|
| Discovered by | Max Wolf @Heidelberg (024) |
| Discovery date | December 22, 1924 |
| Orbital characteristics | |
| Epoch | May 1, 2009 (JD 2454952.5) |
| Aphelion | 5.347 AU (Q) |
| Perihelion | 1.356 AU (q) |
| Semi-major axis | 3.352 AU (a) |
| Eccentricity | 0.5952 |
| Orbital period | 6.14 yr |
| Inclination | 15.98° |
| Last perihelion | August 19, 2016 July 1, 2010 March 17, 2004 |
| Next perihelion | 2025-Aug-04 |
| Jupiter MOID | 0.07 AU (10,000,000 km) |
| Year (epoch) | 2017 | 2020 | 2025 |
|---|---|---|---|
| Semi-major axis | 3.35 | 4.30 | 4.33 |
| Perihelion | 1.35 | 2.39 | 2.44 |
| Aphelion | 5.34 | 6.20 | 6.22 |
During the 1997 apparition the comet reached an apparent magnitude a little bit brighter than 12.
The comet had an unfavorable apparition in 2010, because during perihelion (closest approach to the Sun), the comet was only 10 degrees from the Sun as seen from Earth. The comet was not more favorably positioned in the sky until mid October 2010.
The comet nucleus is estimated to be 3.6 kilometers in diameter.
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