64P/Swift–Gehrels
64P/Swift–Gehrels is a periodic comet in the Solar System which has a current orbital period of 9.23 years.
| Discovery | |
|---|---|
| Discovered by | Lewis A. Swift Tom Gehrels |
| Discovery date | 17 November 1889 8 February 1973 |
| Alternative designations | Swift 1 |
| Orbital characteristics A | |
| Aphelion | 7.5231 AU |
| Perihelion | 1.3932 AU |
| Semi-major axis | 4.4582 AU |
| Eccentricity | 0.687 |
| Orbital period | 9.41 a |
| Inclination | 8.9487° |
| Last perihelion | 2018-Nov-03 June 2009 |
| Next perihelion | 2028-Mar-31[1] |
It was originally discovered on 17 November 1889 by Lewis A. Swift at the Warner Observatory, Rochester, New York, and was described by Swift as being pretty faint. It was rediscovered on 8 February 1973 by Tom Gehrels at the Palomar Observatory, California who estimated its brightness as a very low magnitude 19.[2]
It was also observed in 1981, 1991, 2000, 2009 and 2018.
Comet 64P in Pegasus in October 2018
See also
References
- MPC
- "64P/Swift-Gehrels". Retrieved 26 November 2014.
| Numbered comets | ||
|---|---|---|
| Previous 63P/Wild |
64P/Swift–Gehrels | Next 65P/Gunn |
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