30P/Reinmuth
 The comet on 18 February 2010 by Palomar Transient Factory | |
| Discovery | |
|---|---|
| Discovered by | Karl Reinmuth |
| Discovery date | February 22, 1928 |
| Designations | |
| 1928 D1, 1934 V1 | |
| Orbital characteristics | |
| Epoch | July 1, 2009 (2455013.5) |
| Aphelion | 5.664 AU |
| Perihelion | 1.884 AU |
| Semi-major axis | 3.774 AU |
| Eccentricity | 0.5008 |
| Orbital period | 7.33 yr |
| Inclination | 8.13° |
| Last perihelion | 2024-Aug-17[1] 2017-Aug-19[2][3] |
| Next perihelion | 2031-Nov-11[4] |
| Jupiter MOID | 0.159 AU (23,800,000 km)[5] |
Comet 30P/Reinmuth, also known as Comet Reinmuth 1, is a periodic comet in the Solar System. It was first discovered by Karl Reinmuth (Landessternwarte Heidelberg-Königstuhl, Germany) on February 22, 1928.
Initial calculations of its orbit estimated a period of 25 years, but this was later revised to seven years, leading to speculation that it was the same comet as Comet Taylor, which had been lost since 1915. Further calculations by George van Biesbroeck concluded that they were different comets.
The 1935 approach was observed, though it was not as favorable. In 1937, the comet passed close to Jupiter, which increased the perihelion distance and orbital period.
Due to miscalculations, the 1942 appearance was missed, but it has been observed on every subsequent appearance since.
The comet nucleus is estimated to be 7.8 kilometers in diameter.[5]
References
[edit]- ^ MPC
- ^ Seiichi Yoshida (2009-09-30). "30P/Reinmuth 1". Seiichi Yoshida's Comet Catalog. Retrieved 2010-03-01.
- ^ Syuichi Nakano (2003-12-08). "30P/Reinmuth 1 (NK 1011)". OAA Computing and Minor Planet Sections. Retrieved 2010-03-01.
- ^ a b "Horizons Batch for 30P/Reinmuth (90000406) on 2031-Nov-11" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. Retrieved 2025-09-26. (JPL#K243/43 Soln.date: 2025-Jul-07)
- ^ a b "JPL Small-Body Database Browser: 30P/Reinmuth 1". Jet Propulsion Laboratory. 2010-01-04. Retrieved 2010-02-26.
External links
[edit]- 30P/Reinmuth at the JPL Small-Body Database
- 30P/Reinmuth magnitude plot for 2010
- 30P at Kronk's Cometography
- 30P at Kazuo Kinoshita's Comets
- 30P at Seiichi Yoshida's Comet Catalog
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