List of brown dwarfs

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The first isolated brown dwarf discovered was Teide 1 in 1995. The first brown dwarf discovered orbiting a star was Gliese 229 B, also discovered in 1995. The first brown dwarf found to have a planet was 2M1207, discovered in 2004.

Since a brown dwarf mass is between a planet and star, they have also been called planetars or hyperjovians. Various catalog designations have been used to name brown dwarfs; names ending in 'b' are in orbit around a primary star.

The following list of 53 brown dwarfs for which data is available, out of a total of at least 626 known. Note that some extrasolar planets can turn out to be brown dwarfs if their mass is higher than originally thought: most have only minimum masses because their inclination of the orbit is not known. Examples include HD 114762 b (>11.68 M_J), Pi Mensae b (>10.312 M_J), and NGC 2423-3 b (>10.6 M_J).

[edit] Confirmed brown dwarfs orbiting primary stars

This list is incomplete; you can help by expanding it.

The following list contains 41 brown dwarfs that orbit primary stars.

Sorted by increasing right ascension of the parent star. Brown dwarfs within a system sorted by increasing orbital period.

Star	Constellation	Right ascension	Declination	App. mag.	Distance (ly)	Spectral type	Brown dwarf	Mass (M_J)	Radius (R_J)	Orbital period (d)	Semimajor axis (AU)	Orbital eccentricity	Inclination (°)	Discovery year
HD 8673	Andromeda	01^h 26^m 09^s	+34° 34′ 47″	6.31	124.75	F7V	b	14		639	1.58			2005
Upsilon Andromedae	Andromeda	01^h 36^m 48^s	+41° 24′ 20″	4.63	43.9	F8V	c	13.98		237.7	0.822	0.224	7.9	1999
HD 13189	Triangulum	02^h 09^m 40^s	+32° 18′ 59″	7.57	603.4	K2II	b	14		471.6	1.85	0.28		2005
HD 16760	Perseus	02^h 42^m 21^s	+38° 37′ 07″	8.74	163	G5V	b	14.3		465.1	1.13	0.067		2009
HD 18445	Fornax	02^h 57^m 13^s	–24° 58′ 30″	7.78	83.92	K2V	b	39		554.67	0.9	0.54		1991
BD−04°782	Eridanus	04^h 15^m 10^s	–04° 25′ 06″	9.39	66.6	K5V	b	21		240.92	0.7	0.28		1996
HD 283750	Taurus	04^h 36^m 48^s	+27° 08′ 00″	8.42	53.81	K2V	b	50		1.79	0.025	0.02		1996
HD 29587	Perseus	04^h 41^m 34^s	+42° 07′ 25″	7.29	146.77	G2V	b	40		1471.7	2.5	0.37		1996
HD 38529 A	Orion	05^h 46^m 34^s	+01° 10′ 05″	5.94	138	G4IV	c	37		2174.3	3.68	0.36	160	2002
HD 41004 B	Pictor	05^h 59^m 50^s	–48° 14′ 23″	12.33	139	M2	b	18.4		1.3283	0.0177	0.081		2004
Gliese 229	Lepus	06^h 10^m 35^s	–21° 51′ 42″	8.14	19	M1V	B	40		200 y	40			1995
AB Pictoris	Pictor	06^h 19^m 12^s	–58° 03′ 15″	9.16	149	K2V	b	13.5			275			2005
Tau Geminorum	Gemini	07^h 11^m 08^s	+30° 14′ 43″	4.40	302	K2III	b	18.1		305				2004
HAT-P-13	Ursa Major	08^h 39^m 32^s	+47° 21′ 07″	10.62	698	G4	c	15.2		428.5	1.186	0.691		2009
G 196-3	Ursa Major	10^h 04^m 22^s	+50° 23′ 23″	11.77	50.2	M2.5	b	25			300			1998
BD+20°2457	Leo	10^h 16^m 45^s	+19° 53′ 29″	9.75	652	K2II	b	21.42		379.63	1.45	0.15		2009
HD 89707	Hydra	10^h 20^m 50^s	–15° 28′ 48″	7.19	81.54	G1V	b	54		298.25		0.95		1991
CT Chamaeleontis	Chamaeleon	11^h 04^m 09^s	–76° 27′ 19″	12.36	538	K7	b	17	2.2			440		2008
ChaHα8	Chamaeleon	11^h 07^m 48^s	−77° 40′ 08″	20.1	522	M6.5	b	18		1590.9	1	0.49		2007
Xi Ursae Majoris B	Ursa Major	11^h 18^m 12^s	+31° 32′ 15″	4.73	25.11	F8.5V	b	37		3.98	0.06	0		1931
CD−33°7795	Hydra	11^h 31^m 55^s	–34° 36′ 17″	11.37	163.08	M1	b	20			100			1998
NGC 4349-127	Crux	12^h 24^m 08^s	−61° 52′ 18″	7.4	7097	MIII?	b	19.8		677.8	2.38	0.19		2007
HD 110833	Canes Venatici	12^h 44^m 16^s	+51° 45′ 40″	7.04	55.44	K3V	b	17		270.04	0.8	0.69		1996
HW Virginis	Virgo	12^h 44^m 20^s	−08° 40′ 17″	10.9	590	sdB+M	b	19.23		5786	5.30	0.46		2008
HD 112758	Virgo	12^h 59^m 03^s	–09° 50′ 03″	7.56	53.81	K0V	b	35		103.22	0.35	0.16		1996
HD 131664	Apus	15^h 00^m 06^s	−73° 32′ 07″	8.13	180.8	G3V	b	18.15		1951	3.17	0.638		2008
HD 136118	Serpens	15^h 18^m 55^s	−01° 35′ 32″	6.94	171	F9V	b	42		1209	1.45	0.352	163.1	2002
HD 140913	Corona Borealis	15^h 45^m 07^s	+28° 28′ 12″	8.07	156.42	G0V	b	46		147.94	0.54	0.61		1996
GQ Lupi	Lupus	15^h 49^m 12^s	–35° 39′ 03″	11.4	400	K7eV	b	1-42	1.8		103			2005
UScoCTIO 108	Scorpius	16^h 05^m 54^s	–18° 18′ 43″		473	M7	b	14			670			2007
HD 149382	Ophiuchus	16^h 34^m 23^s	−04° 00′ 52″	8.95	241	B5D	b	15.5		2.391		0	39	2009^{[list membership disputed]}
HD 162020	Scorpius	17^h 50^m 38^s	–40° 19′ 06″	9.18	101.95	K2V	b	15.0		8.428198	0.0751	0.277		2000
Nu Ophiuchi	Ophiuchus	17^h 59^m 01^s	−09° 46′ 25″	3.33	152.8	K0III	b	21.9		536				2004
HD 164427	Telescopium	18^h 04^m 43^s	−59° 12′ 35″	6.89	127.52	G4IV	b	46		108.55	0.46	0.55		2000
HD 168443	Serpens	18^h 20^m 04^s	–09° 35′ 34″	6.92	123.5	G5	c	34		1739.5	2.87	0.228	150	2001
SCR 1845-6357	Pavo	18^h 45^m 07^s	−63° 57′ 43″	17.4	12.57	M8.5V	B	40-50			4.1			2006
COROT-3	Aquila	19^h 28^m 13^s	+00° 07′ 19″	13.3	2220	G0V	b	21.66	1.01	4.2568	0.057	0	85.9	2008
15 Sagittae	Sagitta	20^h 04^m 06^s	+17° 04′ 13″	5.80	57.7	G1V	B	65			14			2002
HD 202206	Capricornus	21^h 14^m 58^s	–20° 47′ 20″	8.08	151.14	G6V	b	17.4		255.87	0.83	0.435		2000
Epsilon Indi	Indus	22^h 03^m 22^s	–56° 47′ 09″	4.69	11.8	K5V	Bb	28		15 y	2.65			2003
Epsilon Indi	Indus	22^h 03^m 22^s	–56° 47′ 09″	4.69	11.8	K5V	Ba	47		1459 y				2003
HD 217580	Aquarius	23^h 01^m 52^s	–03° 50′ 55″	7.46	58.7	K4V	b	60		454.66	1	0.52		1994

[edit] Unconfirmed brown dwarfs

This list is incomplete; you can help by expanding it.

Here are 7 unconfirmed brown dwarfs orbiting stars.

Sorted by increasing right ascension of the parent star. Brown dwarfs within a system sorted by increasing orbital period.

Star	Constellation	Right ascension	Declination	App. mag.	Distance (ly)	Spectral type	Brown dwarf	Mass (M_J)	Radius (R_J)	Orbital period (d)	Semimajor axis (AU)	Orbital eccentricity	Inclination (°)	Discovery year
Gliese 22 B	Cassiopeia	00^h 32^m 27^s	+67° 14′ 09″	10.38	326	M2.5V	b	16		~5500		0		2008
HD 3346	Andromeda	00^h 36^m 46^s	+44° 29′ 19″	5.16	655.58	K5III	c	60		650	2.5			1996
OGLE-TR-109	Carina	10^h 53^m 41^s	–61° 25′ 15″	15.8	8450		b	<14	0.9	0.589128	0.016		77	2002
HD 100546	Musca	11^h 33^m 25^s	–70° 11′ 41″	6.70	337.25	B9Vne	b	20			6.5?			2005
HD 104304	Virgo	12^h 00^m 44^s	−10° 26′ 46″	5.54	42.1	G9	b	17.2		2752		0.38		2007
CM Draconis	Draco	16^h 34^m 27^s	+57° 09′ 00″	12.90	48	M4	b	64		73	0.27			1998
HD 154857	Ara	17^h 11^m 16^s	−56° 40′ 51″	7.25	220	G5V	c	18.4		2900		>0.25		2007
RU Lupi	Lupus	15^h 56^m 42^s	–37° 49′ 16″	10.5	400	G5V:e	b	≥27		3.71	0.041	0.41		2007

[edit] Field brown dwarfs

This list is incomplete; you can help by expanding it.

The following has 5 'field' brown dwarfs, which do not orbit stars.

Sorted by increasing right ascension.

Brown dwarf	Constellation	Right ascension	Declination	App. mag.	Distance (ly)	Spectral type	Mass (M_J)	Radius (R_J)	Discovery year
Teegarden's star	Aries	02^h 53^m 00^s	16° 52′ 53″	15.40	12.578	M7	<80		2003
DEN 0255-4700	Eridanus	02^h 55^m 04^s	−47° 00′ 51″	22.92	16.2	L8	<80		2006
Teide 1	Taurus	03^h 47^m 18^s	+24° 22′ 31″		380	M8	55		1995
Cha 110913-773444	Chamaeleon	11^h 09^m 14^s	–77° 34′ 45″	21.59	163	L	8	1.8	2005
OTS 44	Chamaeleon	11^h 10^m 12^s	–76° 32′ 13″		554	M9.5V	15		2005

[edit] See also

Star portal

[edit] External links

"Extrasolar Visions: Brown dwarfs". Archived from the original on 2007-09-28. http://web.archive.org/web/20070928075638/http://www.clannad.net/starlisttour.asp?starcatid=browndwarf&order=mass&ShowUncertain=0. Retrieved 2007-07-25.
"Interactive Extrasolar-Planets Catalogue". http://vo.obspm.fr/exoplanetes/encyclo/catalog-all.php?&mode=2&more=yes. Retrieved 2007-07-25. ^{[dead link]}

List of brown dwarfs

Contents

[edit] Confirmed brown dwarfs orbiting primary stars

[edit] Unconfirmed brown dwarfs

[edit] Field brown dwarfs

[edit] See also

[edit] External links

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