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Nu Ophiuchi

64 Ophiuchi, 'Sinistra'

Yellow giant in Ophiuchus

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Proper Name	Some sources name this star as Sinistra, though this is not in common use
Bayer Designation	Nu Ophiuchi
Flamsteed Number	64 Ophiuchi
HR (BSC)	6698
HD	163917
Constellation	Ophiuchus
Right Ascension	17h 59m 2s
Declination	-9° 46' 25"
Distance	151 light years 46 parsecs
Magnitude	Apparent: +3.31 Absolute: -0.01
Spectral Class	G9IIIa yellow giant
Bodies in this system	Nu Ophiuchi b, brown dwarf Nu Ophiuchi c, brown dwarf
Optimum Visibility	July
Notes	This 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).

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