List of supernova candidates

This is a list of supernova candidates, or stars that astronomers have suggested are supernova progenitors. Type II supernova progenitors include stars with at least 10 solar masses that are in the final stages of their evolution. (Prominent examples of stars in this mass range include Antares, Spica,^[1] Gamma Velorum,^[2] Mu Cephei, and members of the Quintuplet Cluster.^[3]) Type Ia supernova progenitors are white dwarf stars that are close to the Chandrasekhar limit of about 1.44 solar masses and are accreting matter from a binary companion star. The list includes massive Wolf–Rayet stars, which may become Type Ib/Ic supernovae.

This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries.

Supernova progenitor candidates

Identifier	Epoch J2000		Constellation	Distance (light years)	Spectral class	Notes
	R. A.	Dec.
IK Pegasi	21^h 26^m 26.7^s	+19° 22′ 32″	Pegasus	150	A8m:/DA	[4][5]
Spica	13^h 25^m 11.6^s	−11° 09′ 40.8″	Virgo	250	B1
Alpha Lupi	14^h 41^m 56^s	–47° 23′ 17″	Lupus	550	B1.5	[6]
Antares	16^h 29^m 24^s	–26° 25′ 55″	Scorpius	600	M1.5Iab-b	[7]
Betelgeuse	05^h 55^m 10.3^s	+07° 24′ 25″	Orion	640	M2Iab	[1][8]
Gamma^2 Velorum	08^h 09^m 32.0^s	−47° 20′ 12″	Vela	800	WC8	[9]
Rigel	05^h 14^m 32.3^s	–08° 12′ 06″	Orion	860	B8Ia	[10]
Pi Puppis	7^h 17^m 08^s	–37° 05′ 51″	Puppis	1,100	K3 Ib
119 Tauri	05^h 32^m 12.8^s	+18° 35′ 40″	Taurus	1,700	M2Iab-Ib
RS Ophiuchi	17^h 50^m 13.2^s	–06° 42′ 28″	Ophiuchus	1,950–5,200	M2III/D	[11][12]
T Coronae Borealis	15^h 59^m 30.2^s	+25° 55′ 13″	Corona Borealis	2,000	M3III/D	[13]
Mu Cephei	21^h 43^m 30.5^s	+58° 46′ 48″	Cepheus	2400	M2Ia	[14]
T Pyxidis	09^h 04^m 41.5^s	−32° 22′ 48″	Pyxis	3,260		[15][16]
WR 142	20^h 21^m 44.3^s	+37° 32′ 31″	Cygnus	4,000	WO2
WR 102	17^h 45^m 47.5^s	−26° 10′ 27″	Sagittarius	9,800	WO2
VY Canis Majoris	07^h 22^m 58.3^s	−25° 46′ 03″	Canis Major	4,900	M5eIa	[8][17]
NML Cygni	20^h 46^m 25.6^s	+40° 06′ 59.4″	Cygnus	5,300	M6I	[18]
P Cygni	20^h 17^m 47.2^s	+38° 01′ 59″	Cygnus	6,000	B1Ia+
Eta Carinae	10^h 45^m 03.6^s	−59° 41′ 04″	Carina	7,000–8,000	LBV	[19][20]
HD 168625	18^h 21^m 19.5^s	−16° 22′ 26″	Sagittarius	7,200	B6Ia	[21]
WR 104	18^h 02^m 04.1^s	–23° 37′ 41″	Sagittarius	8,000	WC9d/OB	[22][23]
IRC+10420	19^h 26^m 48.1^s	+11° 21′ 17″	Aquila	10,000–23,000	F8Ia+	[24][25]
Rho Cassiopeiae	23^h 54^m 23.0^s	+57° 29′ 58″	Cassiopeia	12,000	G2Ia0e	[26]
IRAS 17163-3907	17^h 19^m 49.3^s	−39° 10′ 37.9″	Scorpius	13,000	late B/early A	[27]
Wray 17-96	17^h 41^m 35^s	–30° 06′ 39″	Scorpius	15,000	B3
Sher 25	11^h 15^m 07.8^s	−61° 15′ 17″	Carina	~20,000	B1.5Iab	[28]
HD 179821	19^h 13^m 58.6^s	+00° 07′ 32″	Aquila	20,000	G5Ia	[29][30]
V445 Puppis	07^h 37^m 56.9^s	–25° 56′ 59″	Puppis	27,000		[31]
U Scorpii	16^h 22^m 30.7^s	–17° 52′ 42″	Scorpius	39,000		[32]
KPD 1930+2752	19^h 32^m 14.9^s	+27° 58′ 35″	Cygnus		sdB/D	[nb 1][33][34]

Notes

1. The Kitt Peak Downes star.

References

1. Supernova Remnants and Neutron Stars, Harvard-Smithsonian Center for Astrophysics, 2005-08-02, retrieved 2006-06-08
2. Kaler, James B., "Regor", Stars (University of Illinois), retrieved 2007-01-08
3. Lloyd, Robin (2006-09-04), Strange Space Pinwheels Spotted, space.com, retrieved 2007-01-08
4. Samuel, Eugenie (2002-05-23), Supernova poised to go off near Earth, New Scientist, retrieved 2007-01-12
5. Tzekova, S. Y.; et al. (2004), IK Pegasi (HR 8210), ESO, retrieved 2007-01-12
6. "Big and Giant Stars: Alpha Lupi". Jumk.de. Retrieved 2013-01-03.
7. "What will happen when Antares explodes?". Disassociated.com. 2009-01-13. Retrieved 2013-01-03.
8. Smith, Nathan; Hinkle, Kenneth H.; Ryde, Nils (March 2009). "Red Supergiants as Potential Type IIn Supernova Progenitors: Spatially Resolved 4.6 μm CO Emission Around VY CMa and Betelgeuse". The Astronomical Journal 137 (3): 3558–3573. arXiv:0811.3037. Bibcode:2009AJ....137.3558S. doi:10.1088/0004-6256/137/3/3558.
9. Beech, Martin (December 2011), "The past, present and future supernova threat to Earth's biosphere", Astrophysics and Space Science 336 (2): 287–302, Bibcode:2011Ap&SS.336..287B, doi:10.1007/s10509-011-0873-9
10. Moravveji, Ehsan; Guinan, Edward F.; Shultz, Matt; Williamson, Michael H.; Moya, Andres (March 2012), "Asteroseismology of the nearby SN-II Progenitor: Rigel. Part I. The MOST High-precision Photometry and Radial Velocity Monitoring", The Astrophysical Journal 747 (1): 108–115, arXiv:1201.0843, Bibcode:2012ApJ...747..108M, doi:10.1088/0004-637X/747/2/108
11. Than, Ker (2006-07-19), Mystery of Explosive Star Solved, space.com, retrieved 2007-01-08
12. Staff (2006-07-25), Astronomers See Future Supernova Developing, SpaceDaily, retrieved 2006-12-01
13. "Recurrent Novae as a Progenitor System of Type Ia Supernovae. I. RS Ophiuchi Subclass: Systems with a Red Giant Companion - Abstract - The Astrophysical Journal - IOPscience". Iopscience.iop.org. 2008-12-19. Retrieved 2013-01-03.
14. Lloyd, Robin (2006-09-04). "Strange Space Pinwheels Spotted". space.com. Retrieved 2007-01-08.
15. Schaefer, Bradley E.; Pagnotta, Ashley; Shara, Michael M. (January 2010). "The Nova Shell and Evolution of the Recurrent Nova T Pyxidis". The Astrophysical Journal 708: 381–402. arXiv:0906.0933. Bibcode:2010ApJ...708..381S. doi:10.1088/0004-637X/708/1/381.
16. Edwards, Lin (2010). "Massive white dwarf in our galaxy may go supernova". PhysOrg. Retrieved 2010-02-26.
17. Weaver, D.; Humphreys, R. (2007-01-08). "Astronomers Map a Hypergiant Star's Massive Outbursts". HubbleSite NewsCenter. Retrieved 2007-01-16.
18. Monnier, J. D.; Millan‐Gabet, R.; Tuthill, P. G.; Traub, W. A.; Carleton, N. P.; Coude Du Foresto, V.; Danchi, W. C.; Lacasse, M. G.; Morel, S.; Perrin, G.; Porro, I. L.; Schloerb, F. P.; Townes, C. H. (2004). "High‐Resolution Imaging of Dust Shells by Using Keck Aperture Masking and the IOTA Interferometer". The Astrophysical Journal 605: 436. arXiv:astro-ph/0401363. Bibcode:2004ApJ...605..436M. doi:10.1086/382218.
19. van Boekel, R.; Schöller, M.; Herbst, T. (2003-11-18). "Biggest Star in Our Galaxy Sits within a Rugby-Ball Shaped Cocoon". European Organisation for Astronomical Research in the Southern Hemisphere (ESO). Retrieved 2007-01-08.
20. Milan, Wil (2000-03-07). "Possible Hypernova Could Affect Earth". space.com. Retrieved 2007-01-06.
21. Smith, Nathan (March 2007). "Discovery of a Nearby Twin of SN 1987A's Nebula around the Luminous Blue Variable HD 168625: Was Sk -69 202 an LBV?". The Astronomical Journal 133 (3): 1034–1040. arXiv:astro-ph/0611544. Bibcode:2007AJ....133.1034S. doi:10.1086/510838.
22. Tuthill, Peter G.; et al. (March 2008). "The Prototype Colliding-Wind Pinwheel WR 104". The Astrophysical Journal 675 (1): 698–710. arXiv:0712.2111. Bibcode:2008ApJ...675..698T. doi:10.1086/527286.
23. Kaler, Jim (1999-04-09). "WR 104: Pinwheel Star". Astronomy Picture of the Day. Retrieved 2007-01-08.
24. Jones, Terry Jay; et al. (July 1993). "IRC +10420 - A cool hypergiant near the top of the H-R diagram". Astrophysical Journal, Part 1 411 (1): 323–335. Bibcode:1993ApJ...411..323J. doi:10.1086/172832.
25. Than, Ker (2004-10-04). "Astronomers Demonstrate a Global Internet Telescope". University of Manchester. Retrieved 2007-01-08.
26. Staff (2003-01-31). "The William Herschel telescope finds the best candidate for a supernova explosion". Particle Physics and Astronomy Research Council. Retrieved 2007-01-05.
27. Staff (2011-09-28). "'Fried Egg' Nebula Cracks Open Rare Hypergiant Star". Space.com. Retrieved 2015-06-13.
28. Smartt, S. J.; Lennon, D. J.; Kudritzki, R. P.; Rosales, F.; Ryans, R. S. I.; Wright, N. (September 2002). "The evolutionary status of Sher 25 - implications for blue supergiants and the progenitor of SN 1987A". Astronomy and Astrophysics 391 (3): 979–991. arXiv:astro-ph/0205242. Bibcode:2002A&A...391..979S. doi:10.1051/0004-6361:20020829.
29. Jura, M.; Velusamy, T.; Werner, M. W. (2001-06-05). "What next for the Likely Pre-Supernova, HD 179821?". American Astronomical Society. Retrieved 2007-01-08.
30. Josselin, E.; Lèbre, A. (2001). "Probing the post-AGB nature of HD 179821". Astronomy and Astrophysics 367 (3): 826–830. Bibcode:2001A&A...367..826J. doi:10.1051/0004-6361:20000496.
31. Woudt, P. A.; et al. (November 2009). "The Expanding Bipolar Shell of the Helium Nova V445 Puppis". The Astrophysical Journal 706 (1): 738–746. arXiv:0910.1069. Bibcode:2009ApJ...706..738W. doi:10.1088/0004-637X/706/1/738.
32. Thoroughgood, T. D.; Dhillon, V. S.; Littlefair, S. P.; Marsh, T. R.; Smith, D. A. (2002). "The recurrent nova U Scorpii -- A type Ia supernova progenitor". The Physics of Cataclysmic Variables and Related Objects. San Francisco, CA: Astronomical Society of the Pacific. Bibcode:2002ASPC..261...77T. Retrieved 2009-01-24.
33. Maxted, P. F. L.; Marsh, T. R.; North, R. C. (September 2000). "KPD 1930+2752: a candidate Type Ia supernova progenitor". Monthly Notices of the Royal Astronomical Society 317 (3): L41–L44. arXiv:astro-ph/0007257. Bibcode:2000MNRAS.317L..41M. doi:10.1046/j.1365-8711.2000.03856.x.
34. Kanipe, Jeff (2000-08-05). "Skywatch—Watch This Space!". space.com. Retrieved 2007-01-06.