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Proper Name	None
Bayer Designation	Xi Ophiuchi
Flamsteed Number	40 Ophiuchi
HR (BSC)	6445
HD	156897
Constellation	Ophiuchus
Right Ascension	17h 21m 0s
Declination	-21° 6' 47"
Distance	57 light years 18 parsecs
Magnitude	Apparent: +4.38 Absolute: +3.18
Spectral Class	F2V bright yellow dwarf
Optimum Visibility	June / July
Notes	A pale yellow main sequence star, Xi Ophiuchi shines with a luminosity nearly five times greater than that of the Sun. It has an orbiting companion, a much fainter ninth-magnitude star designated Xi Ophiuchi B. A third apparent member of the system, Xi Ophiuchi C, is an optical companion that lies on a close line of sight to the main binary system.

An orange binary star that shines in one of the brightest areas of the Milky Way. It is relatively close to Earth's Solar System, at a distance of some 57 light years.

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