73P/Schwassmann–Wachmann, also known as Schwassmann–Wachmann 3 or SW3 for short, is a periodic comet that has a 5.4 year orbital period and that has been actively disintegrating since 1995. When it ca
Disrupted comet Schwassmann–Wachmann 3 (as seen from Mt Laguna on April 19, 2006)
The B, G and R components of 73P, and Tau Coronae Borealis, May 1, 2006
The C component of 73P, and the Ring Nebula, May 8, 2006
Image taken by Andrew Catsaitis of components B and C of Comet 73P/Schwassmann–Wachmann 3 as seen together on 31 May 2006
Biela's Comet or Comet Biela was a Jupiter-family comet first recorded in 1772 by Montaigne and Messier and finally identified as periodic in 1826 by Wilhelm von Biela. It was subsequently observed to
73P/Schwassmann–Wachmann
…recorded dozens of pieces of fragments B and G. It appears that the comet may eventually disintegrate completely and cease to be observable (as did 3D/Biela in the 19th century), in which case its designation would change from 73P to 73D. In May 2006, it was known to have split into at least 66 separate…
A sketch of Biela's Comet in February 1846, soon after it split into two pieces
The two components of Biela in 1852, as drawn by Secchi.
The Andromedid or Bielid meteors as seen on the night of 27 November 1872.
Biela's Comet was the subject of several panics over close approaches to Earth. An 1877 newspaper illustration from Chile, captioned "inevitable impact of the Earth with Comet Biela"