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2MASS J0523−1403
2MASS J0523−1403 is a very-low-mass red dwarf or high-mass brown dwarf about 40 light-years from Earth in the southern constellation of Lepus (constellation), Lepus, with a very faint visual magnitude of 21.05 and a low effective temperature of 2074 kelvin, K. It is visible primarily in large telescopes sensitive to infrared light. 2MASS J0523−1403 was first observed as part of the Two Micron All-Sky Survey (2MASS). Characteristics 2MASS J0523−1403 has a luminosity of , a radius of , and an effective temperature of 2074 kelvin, K. These values are currently the lowest known for a main sequence, main-sequence star. It has a stellar classification of L2.5 and a V−K color index of 9.42. The mass is calculated to be (). Observation with the Hubble Space Telescope has detected no companion beyond 0.15 arcsecond. Sporadic radio emissions were detected by the Very Large Array, VLA in 2004. H-alpha (Hα) emissions have also been detected, a sign of chromospheric activ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lepus (constellation)
Lepus (, ) is a constellation lying just south of the celestial equator. Its name is Latin for hare. It is located below—immediately south—of Orion (the hunter), and is sometimes represented as a hare being chased by Orion or by Orion's hunting dogs. Although the hare does not represent any particular figure in Greek mythology, Lepus was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and it remains one of the 88 modern constellations. History and mythology Lepus is most often represented as a hare being hunted by Orion, whose hunting dogs (Canis Major and Canis Minor) pursue it. The constellation is also associated with the Moon rabbit. Four stars of this constellation (α, β, γ, δ Lep) form a quadrilateral and are known as ''‘Arsh al- Jawzā''', "the Throne of Jawzā'" or ''Kursiyy al-Jawzā' al-Mu'akhkhar'', "the Hindmost Chair of Jawzā'" and ''al-Nihāl'', "the Camels Quenching Their Thirst" in Arabic. Features Stars There ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |