16 Librae

16 Librae
Observation data
Epoch J2000      Equinox J2000
Constellation Libra
Right ascension 14h 57m 11.00009s[1]
Declination −04° 20′ 47.2547″[1]
Apparent magnitude (V) 4.49[2]
Characteristics
Spectral type F2 V[3]
U−B color index +0.05[2]
B−V color index +0.32[2]
Astrometry
Radial velocity (Rv)+26.3±0.6[4] km/s
Proper motion (μ) RA: −96.98[1] mas/yr
Dec.: −153.40[1] mas/yr
Parallax (π)37.17 ± 0.32 mas[1]
Distance87.7 ± 0.8 ly
(26.9 ± 0.2 pc)
Absolute magnitude (MV)2.32[5]
Details
16 Lib A
Mass1.47[6] M☉
Luminosity9.77[5] L☉
Surface gravity (log g)3.99[6] cgs
Temperature7,187±244[6] K
Metallicity [Fe/H]−0.13[7] dex
Rotational velocity (v sin i)113.3[8] km/s
Age660[6] Myr
Other designations
16 Lib, BD−03° 3696, FK5 3177, GJ 9503, HD 132052, HIP 73165, HR 5570, SAO 140240, WDS J14572-0421A[9]
Database references
SIMBADdata

16 Librae is a star in the constellation Libra. It is a faint star but visible to the naked eye with an apparent visual magnitude of 4.49.[2] An annual parallax shift of 37.17[1] mas yields a distance estimate of 87.7 light years. It is moving further from the Sun with a radial velocity of +26 km/s.[4]

This is an ordinary F-type main-sequence star with a stellar classification of F2 V.[3] It is an estimated 660[6] million years old and is spinning rapidly with a projected rotational velocity of 113 km/s.[8] The star has 1.47[6] times the mass of the Sun and is radiating nearly 10[5] times the Sun's luminosity from its photosphere at an effective temperature of about 7,187 K.[6]

16 Librae has a common proper motion companion located at an angular separation of 22.8 arc seconds along a position angle of 297°, as of 1999. Designated component B, this is a red dwarf star with a class of about M6 and an infrared J-band magnitude of 12.19.[10]

  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 d Cite error: The named reference Ducati2002 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Houk1999 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b c d e f g Cite error: The named reference David2015 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Casagrande2011 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Schroeder2009 was invoked but never defined (see the help page).
  9. ^ "16 Lib". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-01-30.
  10. ^ Cite error: The named reference Scholz2016 was invoked but never defined (see the help page).