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The first brown dwarf discovered orbiting a star was Gliese 229 B, also discovered in 1995. [3] The first brown dwarf found to have a planet was 2M1207, discovered in 2004. [4] As of 2015, more than 2,800 brown dwarfs have been identified. [5] An isolated object with less than about 13 Jupiter masses is technically a sub-brown dwarf or rogue ...
An example of a very old age obtained by the co-movement method is the brown dwarf + white dwarf binary COCONUTS-1, with the white dwarf estimated to be 7.3 +2.8 −1.6 billion years old. In this case the mass was not estimated with the derived age, but the co-movement provided an accurate distance estimate, using Gaia parallax .
Sub-brown dwarf; Ultra-cool dwarf; 0–9. 2MASS J11011926−7732383; 2MASS J00361617+1821104; 2MASS 1237+6526; 2MASS 1507−1627; 2MASS J02431371−2453298; 2MASS ...
In 1995, astronomers confirmed the discovery for the first time of a brown dwarf, a body too small to be a star and too big to be a planet - sort of a celestial tweener. Researchers now have taken ...
Brown dwarf: Smallest known brown dwarf. [53] EPIC 201702477 54,120 [54] BE Ursae Majoris A 54,250 O-type subdwarf [55] LP 40-365: 54,250 White dwarf: A white dwarf that might have formed in a type Iax supernova. Range of values of 40,350 to 82,095 km [56] Epsilon Indi Ba 55,656 Brown dwarf [57] LHS 6343 C 55,978 [58] Epsilon Indi Bb 57,050 [57 ...
Spectral type L is usually a type of brown dwarfs. Also, very young gas giants that are still cooling from the accretion process may have an L-type spectrum. Moreover, some hydrogen-fusing stars also fall into the L-type.
The two brown dwarfs examined by Webb formed about 500 million years ago. Each has a diameter comparable to Jupiter's. One is 35 times more massive than Jupiter, and the other 30 times.
Luhman 16 (also designated WISE 1049−5319 or WISE J104915.57−531906.1) is a binary brown-dwarf system in the southern constellation Vela at a distance of 6.51 light-years (2.00 parsecs) from the Sun.