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Schwassmann-Wachmann 1, Comet 29P/




comet Schwassmann-Wachmann 1
Spitzer Telescope image of Schwassmann-Wachmann in infrared
A short-period comet with an unusual, nearly circular orbit between Jupiter and Saturn, which is prone to occasional, unexplained outbursts in brightness of about 5 magnitudes (a factor of 100) over a few days. It was discovered in 1927 by the German astronomers (Friedrich Carl) Arnold Schwassmann (1870-1964) and Arthur Arno Wachmann (1902–1990).


perihelion 5.8 AU
eccentricity 0.04
inclination 9.4°
period 15 years


Related category

   • COMETS