90P/Gehrels
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Periodic comet with 14 year orbit
| Discovery | |
|---|---|
| Discovered by | Tom Gehrels |
| Discovery date | 11 October 1972 |
| Designations | |
| Gehrels 1 | |
| Orbital characteristics | |
| Epoch | 21 November 2025 |
| Observation arc | 29 years (1972-2018) |
| Number of observations | 621 |
| Aphelion | 9.15 AU |
| Perihelion | 2.965 AU |
| Semi-major axis | 6.055 AU |
| Eccentricity | 0.5103 |
| Orbital period | 14.9 yr |
| Inclination | 9.635° |
| Last perihelion | 19 June 2017[1][2] 22 June 2002 |
| Next perihelion | 2032-May-20[3][2] |
| Physical characteristics | |
| Dimensions | ~7.8 km[1] |
| Comet total magnitude (M1) | 7.0 |
90P/Gehrels, also known as Gehrels 1, is a Jupiter-family comet in the Solar System with a 14.9 year orbital period.[1] The comet nucleus is about 7.8 km in diameter.[1] It last came to perihelion in 2017 and will next come to perihelion in 2032.
- 1 2 3 4 "JPL Small-Body Database Browser". JPL. Retrieved 30 April 2015
- 1 2 MPC
- ↑ "Horizons Batch for 90P/Gehrels 12 (90000906) on 2032-May-20" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. Retrieved 2026-04-15.
External links
- 90P/Gehrels at the JPL Small-Body Database
- 90P/Gehrels 1 at Seiichi Yoshida's website
- 90P/Gehrels at Gideon van Buitenen's website
| Numbered comets | ||
|---|---|---|
| Previous 89P/Russell |
90P/Gehrels | Next 91P/Russell |
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