This is a list of exceptional white dwarf stars. An extensive database of all known white dwarfs and their properties is available in the Montreal White Dwarf Database.
Firsts These were the first white dwarfs discovered fitting these conditions Title Star Date Data Comments Notes Refs First discovered 40 Eridani B1783Atlas of the Universe, "The Universe within 12.5 Light Years: The Nearest Stars", Richard Powell, 30 July 2006 (accessed 2010-11-01) First found in a binary star system First double white dwarf system LDS 275 1944 L 462-56 system First solitary white dwarf Van Maanen 2 1917 Van Maanen's star is also the nearest solitary white dwarf 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 First singular white dwarf with a transiting objectWD 1145+0172015 Known object is a disintegrating planetesimal, most likely an asteroid. First white dwarf that is a pulsar AR Scorpii A 2016 The star is in a binary system with a red dwarf
Extremes These are the white dwarfs which are currently known to fit these conditions Title Star Date Data Comments Notes Refs Nearest Sirius 1852 Sirius B is also the second white dwarf discovered. BBC News, "Hubble finds mass of white dwarf", Christine McGourty, 14 December 2005 (accessed 2010-11-01) 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 Oldest WD 0346+246 2021 11.5 billion years Youngest Highest surface temperature RX J0439.8−6809 2015 This star is located in the Milky Way's galactic halo, in the field of the Large Magellanic Cloud Lowest surface temperature PSR J2222–0137 BWD J2147–4035 20212022 BinarySingle Most luminous Central star of the Skull Nebula 2018 Least luminous WD 0343+247 Brightest apparent Sirius B 1852 8.44 (V) Dimmest apparent Most massive ZTF J1901+1458 2020 1.35 M☉ Least massive CR Boötis B 2022 0.07 M☉ In a tight 24 minute binary. Largest Z Andromedae B 0.17—0.36 Smallest HD 49798 2021
Nearest + 10 nearest white dwarfs Star Distance Comments Notes Refs Sirius B Sirius B is also the second white dwarf discovered. It is part of the Sirius system. Procyon B Part of Procyon system van Maanen's Star GJ 440 40 Eridani B Part of 40 Eridani system Stein 2051 B Part of Stein 2051 system LP 44-113 G 99-44 L 97-12 Wolf 489
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
References
See also
Lists of astronomical objects Lists of stars List of exoplanets and planetary debris around white dwarfs