Nu Serpentis

Nu Serpentis
Location of ν Serpentis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Serpens
Right ascension 17h 20m 49.66149s[1]
Declination −12° 50′ 48.7533″[1]
Apparent magnitude (V) 4.32[2]
Characteristics
Spectral type A2V[3]
U−B color index +0.04[4]
B−V color index +0.03[4]
Astrometry
Radial velocity (Rv)+4.80[5] km/s
Proper motion (μ) RA: +43.40[1] mas/yr
Dec.: +2.61[1] mas/yr
Parallax (π)16.05 ± 0.26 mas[1]
Distance203 ± 3 ly
(62 ± 1 pc)
Absolute magnitude (MV)0.35[2]
Details
Mass2.64[6] M☉
Radius3.0[7] R☉
Luminosity76[6] L☉
Surface gravity (log g)3.95[8] cgs
Temperature9,120[6] K
Metallicity [Fe/H]0.00[9] dex
Rotational velocity (v sin i)123[6] km/s
Age350[10] Myr
Other designations
ν Ser, 53 Serpentis, BD−12°4722, FK5 3376, GC 23424, HD 156928, HIP 84880, HR 6446, SAO 160479, ADS 10481, CCDM J17208-1251A, WDS J17208-1251A, GSC 05653-01431[11]
Database references
SIMBADdata

ν Serpentis, Latinized as Nu Serpentis, is a solitary[10] star in the Serpens Cauda section of the equatorial constellation of Serpens. It is a white-hued star that is faintly visible to the naked eye with an apparent visual magnitude of 4.32.[2] Based upon an annual parallax shift of 16.05 mas as seen from the Sun,[1] it is about 203 light years from the Sun. The star is drifting further away with a radial velocity of +5 km/s.[5]

This is an A-type main-sequence star with a stellar classification of A2V,[3] and is generating energy through hydrogen fusion at its core. It is 350[10] million years old with a high rate of spin, showing a projected rotational velocity of 123 km/s.[6] The star has 2.64[6] times the mass of the Sun and 3.0[7] times the Sun's radius. It is radiating 76 times the Sun's luminosity from its photosphere at an effective temperature of 9,120 K.[6] Nu Serpentis has an optical companion, a magnitude +9.4 star at an angular separation of 46 arcseconds.[12]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference XHIP was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Abt1995 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Mallama2014 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Wilson1953 was invoked but never defined (see the help page).
  6. ^ a b c d e f g Cite error: The named reference Zorec2012 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference AllendePrieto was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference David2015 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Gontcharov2012 was invoked but never defined (see the help page).
  10. ^ a b c Cite error: The named reference DeRosa2014 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference WDS was invoked but never defined (see the help page).