Types of Supernovae

SN 1604, also known as Kepler's Supernova, Kepler's Nova or Kepler's Star, was a supernova of Type Ia that occurred in the Milky Way, in the constellation Ophiuchus.

SN 1572 (Tycho's Supernova, Tycho's Nova), or B Cassiopeiae (B Cas), was a supernova of Type Ia in the constellation Cassiopeia, one of about eight supernovae visible to the naked eye in historical records.

SN 1979C was a supernova about 50 million light-years away in Messier 100, a spiral galaxy in the constellation Coma Berenices. The Type II supernova was discovered April 19, 1979 by Gus Johnson, a school teacher and amateur astronomer.

SN 1987A was a type II supernova in the Large Magellanic Cloud, a dwarf galaxy satellite of the Milky Way. It occurred approximately 51.4 kiloparsecs (168,000 ly) from Earth and was the closest observed supernova since SN 1604, which was seen on earth over four centuries ago.

SN 1993J is a supernova observed in the galaxy M81. It was discovered on 28 March 1993 by F. Garcia in Spain. At the time, it was the second-brightest type II supernova observed in the twentieth century behind SN 1987A. The spectral characteristics of the supernova changed over time.

Supernova 1994D was a Type Ia supernova on the outskirts of galaxy NGC 4526. It was discovered in 1994 by Treffers, Filippenko, Van Dyk, and Richmond using the automated 30-inch telescope at Leuschner Observatory.

SN 1997D, discovered on January 1997 in galaxy NGC 1536 in Reticulum constellation is a first clearly identified example of atypical Type II supernova with a very low luminosity and expansion velocity.

SN 1998bw was a rare broad-lined Type Ic gamma ray burst supernova detected on 26 April 1998 in the ESO 184-G82 spiral galaxy, which some astronomers believe may be an example of a collapsar .

SN 1998S was a type IIn supernova that was observed in NGC 3877 in March 1998. SN 1998S was the brightest type IIn event observed . It was discovered on 1998 March 2.68 UT in NGC 3877 by Z. Wan at a broadband (unfiltered) optical magnitude of +15.2.

SN 2002cx is a peculiar type Ia supernova. It was discovered in May 2002 by a team of researchers from LBL. It behaved differently from normal type Ia supernovae, and differently from several other previously observed peculiar type Ia supernovae including SN 1991T and SN 1991bg.

SN 2003fg, sometimes called the "Champagne Supernova", was an unusual Type Ia supernova. It was discovered in 2003 with the Canada-France-Hawaii Telescope and the Keck Telescope, both on Mauna Kea in Hawaii, and announced by researchers at the University of Toronto.

SN 2005ap, which was discovered by Robert Quimby who also discovered SN 2006gy, was about twice as bright as SN 2006gy and about 300 times as bright as a normal type II supernova. Host Galaxies of Calcium-Rich Supernovae.

SN 2005ap was an extremely energetic type Ic supernova in the galaxy SDSS J130115.12+274327.5. With a peak absolute magnitude of around −22.7, it is the second-brightest hypernova yet recorded, twice as bright as the previous record holder, SN 2006gy, though SN 2005ap was eventually surpassed by ASASSN-15lh.

SN 2005cs was a supernova in the Whirlpool Galaxy. It was a type II supernova, discovered in 2005 by Wolfgang Kloehr, a German amateur astronomer. It was a type II supernova, discovered in 2005 by Wolfgang Kloehr, a German amateur astronomer.

SN 2006X is particularly significant because it is a Type Ia supernova. These supernovae are used for measuring distances, so observations of these supernovae in nearby galaxies are needed for calibration.

Supernova 2008ax was a type Ib supernova in Peculiar Galaxy NGC 4490. As the name indicates, it was discovered in 2008 on 3 March by LOSS and Koichi Itagaki. It was the third-brightest supernova of 2008.

SN 2008ha was unusual in several ways: with an absolute V band magnitude of −14.2 it is one of the faintest supernovae ever observed; its host galaxy type very rarely produces supernovae.

SN 2011dh is a supernova in the Whirlpool Galaxy (M51). On 31 May 2011 an apparent magnitude 13.5 type II supernova (the explosion of a single massive star) was detected in M51 at coordinates 13:30:05.08 +47:10:11.2.

SN 2011fe Supernova 2011fe was detected in late August 2011 in the nearby galaxy M101, and has put on a beautiful show for northern skywatchers since. SN 2011fe is a type-Ia supernova, which originate from accreting white dwarfs in binary star systems.

SN 2014J was a type-Ia supernova in Messier 82 (the 'Cigar Galaxy', M82) discovered in mid-January 2014. It was the closest type-Ia supernova discovered for 42 years, and none have been closer as of 2018. The supernova was discovered by chance during an undergraduate teaching session at University of London Observatory.