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Ross 154





Ross 154
Photo: ESO Online Digitized Sky Survey
A nearby red dwarf. Ross 154, also known as V1216 Sagittarii, lies in the eastern part of the constellation Sagittarius, northeast of Kaus Borealis (Lambda Sagittarii) at a distance of only 9.7 light-years (3.0 pc). It was discovered in 1925 by Frank Elmore Ross who first reported it in his "Second List of New Proper-Motion Stars," Astronomical Journal (36:856). Its closest neighbour is Barnard's Star, 5.41 light-years (1.66 pc) away.


visual magnitude 10.44
absolute magnitude 13.08
spectral type M3.5
luminosity 0.0005 Lsun
surface temperature 2,700 Ksun
radius 0.24 Rsun
mass 0.17 Msun
distance 9.693 light-years (2.96 pc)
position R.A. 18h 49m 49.4s,
Dec. -23 50' 10"
other designations GCTP 4338, GJ 729, LHS 3414,
AC-24 2833-183, HIP 92403


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