Lewis A. Swift |
17 November 1889 |
8 February 1973
|Orbital characteristics A|
|Semi-major axis||4.4509 AU|
|Orbital period||9.23 a|
|Last perihelion||June 2009|
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. 
It was also observed in 1991, 2000 and 2009.
- "64P/Swift-Gehrels". Retrieved 26 November 2014.
|Periodic comets (by number)|
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