Nu Ophiuchi

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Nu Ophiuchi
Observation data
Epoch J2000.0
Constellation
(pronunciation)		 Ophiuchus
Right ascension 17h 59m 1.60s
Declination -9° 46' 24.1"
Apparent magnitude (V) +3.32
Absolute magnitude (V) -0.03
Distance 153 ly
(46.93 pc)
Spectral type K0III
Other designations
Sinistra, 64 Ophiuchi, HR 6698, HD 163917, BD -09 4632, HIP 88048, SAO 142004, FK5 673, GC 24468

Nu Ophiuchi (ν Oph / ν Oph) is a Class K0, third-magnitude star in the constellation Ophiuchus. It carries the traditional Latin name Sinistra, meaning "left" or "left hand" despite the fact that Nu Ophiuchi marks the Serpent Bearer's right hand.

Nu Ophiuchi is a binary star with components of magnitudes 3.3 and 6.8, separated by 2.7 arcseconds. This stellar system is located about 153 light-years from Earth.

The star has a brown dwarf companion Nu Ophiuchi b discovered in early 2004. The companion has mass of 21.9 MJ and takes 536 days to complete an orbit[1].

[edit] See also

[edit] References

  1. ^ "Four Substellar Companions Found Around K Giant Stars" . 


[edit] External links

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