Talk:List of brown dwarfs/workpage

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Extremes[edit]

Title Brown dwarf Year Distance Mass Temperature Comments
Nearest brown dwarf WISE J104915.57-531906 2013 6.5 light-years (2.0 pc) This is actually a binary pair of brown dwarfs, not bound to any other star, just to each other.[1]
Farthest brown dwarf 2001 850 parsecs (2,800 ly) N/A N/A Several brown dwarfs were discovered in M35 (NGC 2168) [2][3]
Hottest brown dwarf PPl 15 1996 135 parsecs (440 ly) 80 MJupiter 2800 K [4][5]
Coolest brown dwarf WISE 1828+2650 2011 ≤300 K
Most massive brown dwarf
Least massive brown dwarf

Nearest brown dwarf titleholder[edit]

Brown dwarf Distance Year Mass Temperature Comments
WISE J104915.57-531906 6.5 light-years (2.0 pc) 2013— [1] This is actually a binary pair of brown dwarfs, not bound to any other star, just to each other.[1]
Epsilon Indi B 12 light-years (3.7 pc) 2011‑2013 N/A N/A Returned to being the closest after the distance to WISE 1541-2250 was corrected
WISE 1541-2250 9 light-years (2.8 pc) 2011 This brown dwarf was incorrectly determined to be 9 light years distant, but was later refined to be 19 light years distant, making its title invalid.
Epsilon Indi B (a and b) 12 light-years (3.7 pc) 2003‑2011 N/A N/A [6][7][8][9][10] This is actually a binary pair of two brown dwarfs.[11][12] It was initially discovered and later that year was found to be binary, with a cooler smaller brown dwarf companion.[13] It is the nearest binary pair of dual brown dwarfs.[14]
DEN 1048−3956 13 light-years (4.0 pc) 2000— 60‑90 MJupiter 2500 K [15][16][17]
LP 944-020
(BRI 0337−3535) 		16 light-years (4.9 pc) 1997‑2000 60 MJupiter 2200 K [15][16][18][19][20] LP944-020 was first catalogued in 1975, but was unrecognized as a brown dwarf. It was rediscovered in 1991, and recatalogued as BRI 0337-3535. Its distance was determined in 1996. The correlation between the old and new catalogue entries was discovered in 1997. Its brown dwarf nature was also determined in 1997.[20][21]
Gliese 229B 19 light-years (5.8 pc) 1995‑1997 30‑40 MJupiter 900 K [22][21][23][24] First brown dwarf accepted.[21][22]

Coolest brown dwarf recordholder[edit]

Brown dwarf Temperature Year Mass Distance Comments
WISE 1828+2650 ≤300 K 2011—
UGPS J0722−05 520 K 2010— 5‑15 MJupiter 4.1 parsecs (13 ly) [9][25] Initially announced as the coolest (400K as opposed to the preceding 500K) and nearest brown dwarf known at the time (April 2010),[26] the distance was raised from 10 light-years (3.1 pc) to 4.1 parsecs (13 ly).[9]
ULAS 1335+11 500-550 K 2009— 15‑30 MJupiter 8–9 parsecs (26–29 ly) [27][28][29][30]
Wolf 940B 570 K 2009 20‑30 MJupiter 40 light-years (12 pc) [31][32][33][34]
CFBDS 0059−0114 620 K 2008‑2009 15‑30 MJupiter 13 parsecs (42 ly) [28][35]
ULAS 0034−00 650 K 2006‑2008 15‑30 MJupiter 12.6 parsecs (41 ly) [35][28][36][37]
2MASS 0415−0935 680 K 2003‑2006 33‑58 MJupiter 19 light-years (5.8 pc) [38][39][40][36][29]
Gliese 570D 750 K 2000‑2003 50 MJupiter 5.91 parsecs (19.3 ly) [40][41][42]
Gliese 229B 900 K 1995‑2000 30‑40 MJupiter 19 light-years (5.8 pc) [22][21][23][24][41][42][43] First brown dwarf accepted.[21][22]

Least massive brown dwarf titlist[edit]

Brown dwarf Mass Year Distance Temperature Comments
Gliese 229B 45‑60 MJupiter
(0.04‑0.055 MSun) 		1995— 19 light-years (5.8 pc) 900 K [22][21][23][44] First brown dwarf accepted.[21][22] The mass was later refined to 30-40 MJupiter.[24]

Most massive brown dwarf recordbreakers[edit]

Brown dwarf Mass Year Distance Temperature Comments
PPl 15 80 MJupiter
(0.079±0.002 MSun) 		1996— 135 parsecs (440 ly) 2800 K [4][5][45] This was one of the first three brown dwarfs acknowledge, the others being Gliese 229B and Teide 1.[24][4] PPl 15 was estimated to be on the limit between brown dwarf and red dwarf.[4][46] In 1999, it was determined that PPl 15 was actually a binary brown dwarf pair, and became the first spectroscopic binary brown dwarf.[47]
Teide 1 55 MJupiter 1996 135 parsecs (440 ly) 2600 K [4][5] This was one of the first three brown dwarfs acknowledge, the others being Gliese 229B and PPl 15.[24][4]
Gliese 229B 30‑40 MJupiter 1995‑1996 19 light-years (5.8 pc) 900 K [22][21][23][44][24] First brown dwarf accepted.[21][22]

Most distant brown dwarf recordsetters[edit]

Brown dwarf Distance Year Temperature Mass Comments
850 parsecs (2,800 ly) 2001— N/A N/A Several brown dwarfs were discovered in M35 (NGC 2168) [2][3]
177 parsecs (580 ly) 1997— N/A N/A Several brown dwarfs were found in Praesepe [48]
135 parsecs (440 ly) 1996‑1997 N/A N/A [4][5]Cite error: A <ref> tag is missing the closing </ref> (see the help page). These were three of the first four brown dwarfs acknowledged, the other being Gliese 229B. These three brown dwarfs are situated in the Pleiades star cluster.[24][4]
Gliese 229B 19 light-years (5.8 pc) 1995‑1996 900 K 45‑60 MJupiter
(0.04‑0.055 MSun) 		[22][21][23][44] First brown dwarf accepted.[21][22] The mass was later refined to 30-40 MJupiter.[24]

Hottest brown dwarf titlesetters[edit]

Brown dwarf Temperature Year Distance Mass Comments
PPl 15 2800 K 1996— 135 parsecs (440 ly) 80 MJupiter [4][5] This was one of the first three brown dwarfs acknowledge, the others being Gliese 229B and Teide 1.[24][4] PPl 15 was estimated to be on the limit between brown dwarf and red dwarf.[4][46] In 1999, it was determined that PPl 15 was actually a binary brown dwarf pair, and became the first spectroscopic binary brown dwarf.[47]
Teide 1 2600 K 1996 135 parsecs (440 ly) 55 MJupiter [4][5] This was one of the first three brown dwarfs acknowledge, the others being Gliese 229B and PPl 15.[24][4]
Gliese 229B 900 K 1995‑1996 19 light-years (5.8 pc) 30‑40 MJupiter [22][21][23][44][24] First brown dwarf accepted.[21][22]

Otherwise notable brown dwarfs[edit]

Brown dwarf Acheivement
DEN 0255-477 In 2006, this became the faintest object whose faintness was determined. [49]

References[edit]

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