16 Comae Berenices

16 Comae Berenices
Observation data
Epoch J2000      Equinox J2000
Constellation Coma Berenices
Right ascension 12h 26m 59.29615s[1]
Declination +26° 49′ 32.5273″[1]
Apparent magnitude (V) 4.96[2]
Characteristics
Evolutionary stage main sequence[3]
Spectral type A4 V[3]
Astrometry
Radial velocity (Rv)+0.40±0.70[4] km/s
Proper motion (μ) RA: −11.456[1] mas/yr
Dec.: −9.220[1] mas/yr
Parallax (π)11.6745 ± 0.2116 mas[1]
Distance279 ± 5 ly
(86 ± 2 pc)
Details[3]
Mass2.54±0.03 M☉
Radius3.71[5] R☉
Luminosity68.6+3.5
−3.3 L☉
Surface gravity (log g)3.67[6] cgs
Temperature8,299+57
−58 K
Metallicity [Fe/H]−0.3[7] dex
Rotational velocity (v sin i)80 km/s
Age310[6] Myr
Other designations
16 Com, BD+27°2134, FK5 2997, HD 108382, HIP 60746, HR 4738, SAO 82314[8]
Database references
SIMBADdata

16 Comae Berenices is a single[9] star in the northern constellation of Coma Berenices. 16 Comae Berenices is the Flamsteed designation. It is a member of the Coma Star Cluster and is visible to the naked eye with an apparent visual magnitude of 4.96.[2] Based upon an annual parallax shift of 11.7 mas,[1] it is located about 279 light years away.

This is a chemically-peculiar A-type main-sequence star with a stellar classification of A4 V.[3] It displays an infrared excess, suggesting the presence of an orbiting debris disk at a mean distance of 18.2 AU with a temperature of 180 K.[5] 16 Com has 2.54[3] times the mass of the Sun and 3.71[5] times the Sun's radius. The star is 310[6] million years old with a projected rotational velocity of 80 km/s.[3] It is radiating 67 times the Sun's luminosity from its photosphere at an effective temperature of 8,299 K.[3]

  1. ^ a b c d e f Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Gebran2008 was invoked but never defined (see the help page).
  3. ^ a b c d e f g Cite error: The named reference zorec2012 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Cotten2016 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference David2015 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference gebran2016 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).