2MASS J11145133−2618235 (designation abbreviated to 2MASS 1114−2618), or 2M1114−26, or 2M1114−2618, or 2MASS 1114−26, or 2MASS J1114−2618) is a nearby brown dwarf of spectral class T7.5, located in constellation Hydra at approximately 18 light-years from Earth.
Discovery 2MASS 1114−2618 was discovered in 2005 by C. G. Tinney et al. from the 2MASS Wide-Field T Dwarf Search (WFTS), based on observations obtained at the Anglo-Australian Telescope, Siding Spring, Australia. In 2005 Tinney et al. published a paper in The Astronomical Journal, where they presented discovery of five new brown dwarfs of spectral type T, among which also was 2MASS 1114−2618.
Distance and proper motion Trigonometric parallax of 2MASS 1114−2618, measured in 2026 by Vrba et al., is 0.1856 ± 0.0018 arcsec, corresponding to a distance 5.39 ± 0.05 pc, or 17.6 ± 0.2 ly.
The photometric distance estimate of 2MASS 1114−2618, published in its discovery paper in 2005, is 7 pc (22.8 ly). Spectrophotometric distance estimate by Kirkpatrick et al. (2012), is 6.6 pc (21.5 ly).
2MASS 1114−2618 has quite a large proper motion of 3047.54 mas/yr with position angle 262.83 degrees, indicating motion in south-west direction on the sky. At distance 17.6 ly (assuming parallax 185.6 ± 1.8 mas), the corresponding tangential velocity is 77.83 km/s.
See also The other four discoveries of brown dwarfs, presented in Tinney et al. (2005): 2MASS 0939−2448 (T8, binary brown dwarf)
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