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Nu Ophiuchi

64 Ophiuchi, 'Sinistra'

Proper NameSome sources name this star as Sinistra, though this is not in common use
Bayer DesignationNu Ophiuchi
Flamsteed Number64 Ophiuchi
HR (BSC)6698
Right Ascension17h 59m 2s
Declination-9° 46' 25"
Distance151 light years
46 parsecs
MagnitudeApparent: +3.31
Absolute: -0.01
Spectral ClassG9IIIa yellow giant
Bodies in this system Nu Ophiuchi b, brown dwarf
Nu Ophiuchi c, brown dwarf
Optimum VisibilityJuly
NotesThis yellow-orange giant has a pair of brown dwarfs in orbit around it, each more than twenty times as massive as Jupiter. The closer of the two orbits Nu Ophiuchi at a distance of some 1.8 AU (a little more distant than Mars' orbit around the Sun), while the second is more distant at 6 AU (somewhat greater than Jupiter's distance from the Sun).

Imagery provided by Aladin sky atlas


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