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This is a list of exceptional white dwarf stars.

Firsts

These were the first white dwarfs discovered fitting these conditions

Title	Star	Date	Data	Comments	Refs
First discovered	Sirius B	1852	Sirius system	Sirius B is also the nearest white dwarf (as of 2005)	^[1]^[2]
First found in a binary star system	Sirius B	1852	Sirius system	Sirius B is also the nearest white dwarf (as of 2005)	^[1]^[2]
First double white dwarf system	LDS 275	1944	L 462-56 system		^[3]
First solitary white dwarf	Van Maanen 2	1917		Van Maanen's star is also the nearest solitary white dwarf	^[4]
First white dwarf with a planet	WD B1620−26	2003	PSR B1620-26 b (planet)	This planet is a circumbinary planet, which circles both stars in the PSR B1620-26 system	^[5]^[6]
First singular white dwarf with a planet	WD 1145+017	2015	WD 1145+017 b	Planet is extremely small and is disintegrating.
First white dwarf that is a pulsar	AR Scorpii A	2016		The star is in a binary system with a red dwarf	^[7]

Extremes

These are the white dwarfs which are currently known to fit these conditions

Title	Star	Date	Data	Comments	Notes	Refs
Nearest	Sirius	1852	8.6 ly (2.6 pc)	Sirius B is also the second white dwarf discovered.	See also: § Nearest	^[1]^[2]
Farthest	SN UDS10Wil progenitor	2013	10,000,000,000 ly z=1.914	SN Wilson is a type-Ia supernova whose progenitor was a white dwarf		^[8]^[9]^[10]
Oldest	WD 0346+246	2021	11.5 billion years			^[11]
Youngest
Highest surface temperature	RX J0439.8−6809	2015	250,000 K (250,000 °C; 450,000 °F)	This star is located in the Milky Way's galactic halo, in the field of the Large Magellanic Cloud		^[12]^[13]^[11]
Lowest surface temperature	PSR J2222–0137 B WD J2147–4035	2021 2022	3000K 3050 K	in binary single		^[11]^[14]
Most luminous	Z Andromedae B		1,500 - 9,800 L_☉			^[15]
Least luminous	WD 0343+247		1.62×10⁻⁵ `L`_☉			^[16]^[17]
Brightest apparent	Sirius B	1852	8.44 (V)
Dimmest apparent
Most massive	ZTF J1901+1458^[18]	2020	1.35 M_☉			^[18]
Least massive	NLTT 11748	2007	0.13–0.16 M_☉			^[11]
Largest	Z Andromedae B		0.17—0.36 `R`_☉			^[19]
Smallest	HD 49798	2021	0.0023 R_☉			^[20]

Nearest

10 nearest white dwarfs
Star	Distance	Comments	Refs
Sirius B	8.58 ly (2.63 pc)	Sirius B is also the second white dwarf discovered. It is part of the Sirius system.	^[1]^[2]^[21]^[22]
Procyon B	11.43 ly (3.50 pc)	Part of Procyon system	^[21]^[22]
van Maanen's Star	14.04 ly (4.30 pc)		^[21]^[22]
GJ 440	15.09 ly (4.63 pc)		^[21]
40 Eridani B	16.25 ly (4.98 pc)	Part of 40 Eridani system	^[21]^[22]
Stein 2051 B	18.06 ly (5.54 pc)	Part of Stein 2051 system	^[21]^[22]
LP 44-113	20.0 ly (6.1 pc)		^[22]
G 99-44	20.9 ly (6.4 pc)		^[22]
L 97-12	25.8 ly (7.9 pc)		^[22]
Wolf 489	26.7 ly (8.2 pc)		^[22]

Other notable white dwarfs

SDSS J1228+1040, a white dwarf with a disk of debris.
ZTF J203349.8+322901.1, a white dwarf with one side made up of hydrogen and the other of helium, nicknamed Janus^[23]^[24]

References

^ ^a ^b ^c Atlas of the Universe, "The Universe within 12.5 Light Years: The Nearest Stars", Richard Powell, 30 July 2006 (accessed 2010-11-01)
^ ^a ^b ^c BBC News, "Hubble finds mass of white dwarf", Christine McGourty, 14 December 2005 (accessed 2010-11-01)
^ W. J. Luyten (September 1944). "Note on the Double White Dwarf L 462-56 = LDS 275". Astrophysical Journal. 100: 202. Bibcode:1944ApJ...100..202L. doi:10.1086/144658.
^ Schatzman, Évry (1958), White Dwarfs, North Holland Publishing Company, p. 2.
^ Steinn Sigurdsson; Harvey B. Richer; Brad M. Hansen; Ingrid H. Stairs; Stephen E. Thorsett (July 2003). "A Young White Dwarf Companion to Pulsar B1620-26: Evidence for Early Planet Formation". Science. 301 (5630): 193–196. arXiv:astro-ph/0307339. Bibcode:2003Sci...301..193S. doi:10.1126/science.1086326. PMID 12855802. S2CID 39446560.
^ "Looking for planets around white dwarfs". Professor Astronomy. 20 August 2010.
^ Hambsch, Franz-Josef. "Amateurs Help Discover Pulsing White Dwarf". Sky and Telescope.
^ Jason Major (5 April 2013). "Hubble Spots the Most Distant Supernova Ever". Discovery Channel.
^ "CANDELS Finds the Most Distant Type Ia Supernova Yet Observed". Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS). 23 April 2013.
^ David O. Jones; Steven A. Rodney; Adam G. Riess; Bahram Mobasher; Tomas Dahlen; Curtis McCully; Teddy F. Frederiksen; Stefano Casertano; Jens Hjorth; Charles R. Keeton; Anton Koekemoer; Louis-Gregory Strolger; Tommy G. Wiklind; Peter Challis; Or Graur; Brian Hayden; Brandon Patel; Benjamin J. Weiner; Alexei V. Filippenko; Peter Garnavich; Saurabh W. Jha; Robert P. Kirshner; Henry C. Ferguson; Norman A. Grogin; Dale Kocevski (2 April 2013). "The Discovery of the Most Distant Known Type Ia Supernova at Redshift 1.914". The Astrophysical Journal. 768 (2) (published May 2013): 166. arXiv:1304.0768. Bibcode:2013ApJ...768..166J. doi:10.1088/0004-637X/768/2/166. S2CID 118890248. 166.
^ ^a ^b ^c ^d Lacki, Brian C.; Brzycki, Bryan; Croft, Steve; Czech, Daniel; DeBoer, David; DeMarines, Julia; Gajjar, Vishal; Isaacson, Howard; Lebofsky, Matt; MacMahon, David H. E.; Price, Danny C.; Sheikh, Sofia Z.; Siemion, Andrew P. V.; Drew, Jamie; Worden, S. Pete (2021-11-24). "One of Everything: The Breakthrough Listen Exotica Catalog". The Astrophysical Journal Supplement Series. 257 (2): 42. arXiv:2006.11304. Bibcode:2021ApJS..257...42L. doi:10.3847/1538-4365/ac168a. ISSN 0067-0049.
^ Universitaet Tübingen (24 November 2015). "The hottest white dwarf in the Galaxy". Science Daily.
^ K. Werner; T. Rauch (29 September 2015). "Analysis of HST/COS spectra of the bare C–O stellar core H1504+65 and a high-velocity twin in the Galactic halo". Astronomy and Astrophysics. 584 (published December 2015): A19. arXiv:1509.08942. Bibcode:2015A&A...584A..19W. doi:10.1051/0004-6361/201527261. S2CID 118458007. A19.
^ Elms, Abbigail K.; Tremblay, Pier-Emmanuel; Gänsicke, Boris T.; Koester, Detlev; Hollands, Mark A.; Gentile Fusillo, Nicola Pietro; Cunningham, Tim; Apps, Kevin (2022-12-01). "Spectral analysis of ultra-cool white dwarfs polluted by planetary debris". Monthly Notices of the Royal Astronomical Society. 517 (3): 4557–4574. arXiv:2206.05258. Bibcode:2022MNRAS.517.4557E. doi:10.1093/mnras/stac2908. ISSN 0035-8711.
^ Sokoloski, J. L.; Kenyon, S. J.; Espey, B. R.; Keyes, Charles D.; McCandliss, S. R.; Kong, A. K. H.; Aufdenberg, J. P.; Filippenko, A. V.; Li, W.; Brocksopp, C.; Kaiser, Christian R.; Charles, P. A.; Rupen, M. P.; Stone, R. P. S. (2006-01-10). "A "Combination Nova" Outburst in Z Andromedae: Nuclear Shell Burning Triggered by a Disk Instability". The Astrophysical Journal. 636 (2): 1002–1019. arXiv:astro-ph/0509638. Bibcode:2006ApJ...636.1002S. doi:10.1086/498206. ISSN 0004-637X. S2CID 8941207.
^ "MWDD - Tables and Charts". Montreal White Dwarf Database. Retrieved 2024-12-15.
^ "WD 0343+247". Montreal White Dwarf Database. Retrieved 2024-12-15.
^ ^a ^b "A White Dwarf Living on the Edge". California Institute of Technology. 2021-06-30. Retrieved 2023-07-20.
^ Sokoloski, J. L.; Kenyon, S. J.; Espey, B. R.; Keyes, Charles D.; McCandliss, S. R.; Kong, A. K. H.; Aufdenberg, J. P.; Filippenko, A. V.; Li, W.; Brocksopp, C.; Kaiser, Christian R.; Charles, P. A.; Rupen, M. P.; Stone, R. P. S. (2006-01-01). "A Combination Nova Outburst in Z Andromedae: Nuclear Shell Burning Triggered by a Disk Instability". The Astrophysical Journal. 636 (2): 1002–1019. arXiv:astro-ph/0509638. Bibcode:2006ApJ...636.1002S. doi:10.1086/498206. ISSN 0004-637X.
^ "New X-ray observations of the hot subdwarf binary HD 49798/RX J0648.0–4418". academic.oup.com. Retrieved 2023-01-08.
^ ^a ^b ^c ^d ^e ^f David Taylor (2012). "White Dwarf Stars Near The Earth" (PDF). The Life and Death of Stars. Weinberg College of Arts and Sciences - Northwestern University.
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ "White dwarfs within 10 parsecs". Sol Station. 2011.
^ Caiazzo, Ilaria; Burdge, Kevin B.; Tremblay, Pier-Emmanuel; Fuller, James; Ferrario, Lilia; Gänsicke, Boris T.; Hermes, J. J.; Heyl, Jeremy; Kawka, Adela; Kulkarni, S. R.; Marsh, Thomas R.; Mróz, Przemek; Prince, Thomas A.; Richer, Harvey B.; Rodriguez, Antonio C. (2023-07-19). "A rotating white dwarf shows different compositions on its opposite faces". Nature. 620 (7972): 61–66. arXiv:2308.07430. Bibcode:2023Natur.620...61C. doi:10.1038/s41586-023-06171-9. ISSN 1476-4687.
^ "Two-Faced Star Exposed". California Institute of Technology. 2023-07-19. Retrieved 2023-07-31.