HR 4699

HR 4699
Observation data
Epoch J2000      Equinox J2000
Constellation Corvus
Right ascension 12h 20m 55.71287s[1]
Declination –13° 33′ 56.6100″[1]
Apparent magnitude (V) +5.14[2]
Characteristics
Spectral type K0 III[3]
U−B color index +0.93[4]
B−V color index +1.048±0.003[2]
Astrometry
Radial velocity (Rv)+14.0±0.7[2] km/s
Proper motion (μ) RA: –4.93[1] mas/yr
Dec.: +9.86[1] mas/yr
Parallax (π)16.21 ± 0.29 mas[1]
Distance201 ± 4 ly
(62 ± 1 pc)
Absolute magnitude (MV)1.18[2]
Details
Mass1.76[5] M☉
Radius9.92+0.11
−0.16[6] R☉
Luminosity43±1[6] L☉
Surface gravity (log g)3.01[7] cgs
Temperature4,707+38
−27[6] K
Metallicity [Fe/H]0.00±0.05[8] dex
Rotational velocity (v sin i)0.0[9] km/s
Age1.97[5] Gyr
Other designations
BD–12°3614, HD 107418, HIP 60221, HR 4699, SAO 157226[10]
Database references
SIMBADdata

HR 4699 is a single[11] star in the southern constellation of Corvus. It is orange in hue and is dimly visible to the naked eye with an apparent visual magnitude of +5.14.[2] This star is located at a distance of approximately 201 light years from the Sun based on parallax.[1] It is drifting further away with a radial velocity of +14 km/s, after come to within 45.1 light-years some four million years ago.[2]

This is an aging giant star with a stellar classification of K0 III,[3] having exhausted the supply of hydrogen at its core then cooled and expanded to almost ten[6] times the Sun's radius. It is nearly two[5] billion years old with 1.76 times the mass of the Sun.[5] The star is radiating 43 times the luminosity of the Sun from its photosphere at an effective temperature of 4,707 K.[6]

  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 e f Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference houk1978 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference UBV was invoked but never defined (see the help page).
  5. ^ a b c d Cite error: The named reference luck2015 was invoked but never defined (see the help page).
  6. ^ a b c d e Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Luck2007 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference gaspar2016 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Massarotti2008 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).