释义 |
Swift-Tuttle Swift–Tuttle (swift tut-'l) (1737 II; 1862 III; 1992 t) A major comet that was independently discovered in 1862 by Lewis Swift and Horace Tuttle. It is the parent of the Perseid meteoroid stream, which has a mass of well over 1014 kg. The comet has an orbital inclination of 113° and a period of around 128 years. |