2MASS 1507-1627 [SEP] constellation
2MASS 1507−1627
2MASS J15074769−1627386 (also abbreviated to 2MASS 1507−1627) is a brown dwarf in the constellation Libra, located about 23.9 light-years from Earth. It was discovered in 2000 by I. Neill Reid et al. It belongs to the spectral class L5; its surface temperature is 1300 to 2000 kelvins. As with other brown dwarfs of spectral type L, its spectrum is dominated by metal hydrides and alkali metals. Its position shifts due to its proper motion by 0.9031 arcseconds per year. It has a parallax of (
2MASS J11145133−2618235
2MASS J11145133−2618235 (designation abbreviated to 2MASS 1114−2618, or 2M1114−26, or 2M1114−2618, or 2MASS 1114−26, or 2MASS J1114−2618) is 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.