HD 222095

HD 222095
Location of HD 222095 (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Phoenix
Right ascension 23h 37m 50.99418s[1]
Declination −45° 29′ 32.4672″[1]
Apparent magnitude (V) 4.74[2]
Characteristics
Evolutionary stage main sequence
Spectral type A1/2V[3]
U−B color index +0.09[2]
B−V color index +0.08[2]
Astrometry
Radial velocity (Rv)+3.40[4] km/s
Proper motion (μ) RA: +70.71[1] mas/yr
Dec.: −12.66[1] mas/yr
Parallax (π)16.29 ± 0.22 mas[1]
Distance200 ± 3 ly
(61.4 ± 0.8 pc)
Absolute magnitude (MV)0.80[5]
Details
Mass2.55[6] M☉
Radius2.2[7] R☉
Luminosity41.42[5] L☉
Surface gravity (log g)3.92[6] cgs
Temperature9,230[6] K
Metallicity [Fe/H]−0.01[8] dex
Rotational velocity (v sin i)141[6] km/s
Age482[6] Myr
Other designations
CD−46°14720, FK5 889, GC 32836, HD 222095, HIP 116602, HR 8959, SAO 231707[9]
Database references
SIMBADdata

HD 222095 is a single[10] star in the southern constellation of Phoenix, near the western constellation border with Grus. It has a white hue and is visible to the naked eye with an apparent visual magnitude of 4.74.[2] The star is located at a distance of is approximately 200 light years based on parallax,[1] and it is drifting further away with a radial velocity of +3.4 km/s.[4]

This object is an A-type main-sequence star with a stellar classification of A1/2V.[3] It has a high rate of spin with a projected rotational velocity of 141[6] to 165 km/s, giving it an equatorial bulge that is 4% larger than the polar radius.[11] The star is 482 million years old with 2.55[6] times the mass of the Sun and around 2.2[7] times the Sun's radius. It is radiating 41[5] times the luminosity of the Sun from its photosphere at an effective temperature of 9,230 K.[6] The chemical abundance of the star's outer atmosphere is similar to that in the Sun.[8]

  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 houk1978 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference XHIP was invoked but never defined (see the help page).
  6. ^ a b c d e f g h Cite error: The named reference David2015 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Fracassini2001 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Gontcharov2012 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference vanBelle2012 was invoked but never defined (see the help page).