|Discovered by||Lewis A. Swift |
|Discovery date||17 November 1889 |
8 February 1973
|Orbital characteristics A|
|Semi-major axis||4.4582 AU|
|Orbital period||9.41 a|
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 1981, 1991, 2000, 2009 and 2018.