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Nu Ophiuchi

ν Ophiuchi
Location of ν Ophiuchi (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Ophiuchus
Right ascension 17h 59m 01.59221s[1]
Declination −09° 46′ 25.081″[1]
Apparent magnitude (V) +3.332[2]
Characteristics
Spectral type K0 IIIa CN –1[3]
U−B color index +0.873[2]
B−V color index +0.999[2]
Astrometry
Radial velocity (Rv)12.95 ± 0.41[4] km/s
Proper motion (μ) RA: −7.707 mas/yr[1]
Dec.: −116.38 mas/yr[1]
Parallax (π)22.9031 ± 0.1922 mas[1]
Distance142 ± 1 ly
(43.7 ± 0.4 pc)
Absolute magnitude (MV)–0.19[5]
Details[6]
Mass2.98±0.11 M☉
Radius13.85±0.17 R☉
Luminosity108.2±6 L☉
Surface gravity (log g)2.1 cgs
Temperature5,000±63 K
Metallicity [Fe/H]0.12 dex
Rotational velocity (v sin i)2.1[4] km/s
Age390±50 Myr
Other designations
Sinistra, 64 Ophiuchi, BD–09 4632, FK5 673, HD 163917, HIP 88048, HR 6698, SAO 142004, 2MASS J17590160-0946249[7]
Database references
SIMBADdata

Nu Ophiuchi (ν Oph, ν Ophiuchi) is a star in the equatorial constellation of Ophiuchus. The apparent visual magnitude is +3.3,[2] making it one of the brighter members of this constellation. Based upon parallax measurements made by the Gaia spacecraft, this star is located about 142 light-years (44 parsecs) from Earth.[1]

  1. ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  2. ^ a b c d Cite error: The named reference sps1966 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference araa11_29 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference aj135_1_209 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference pasj60_4_781 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference baines2018 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).

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