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Single A-type main sequence star in the constellation of Phoenix From Wikipedia, the free encyclopedia
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]
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] |
Distance | 200 ± 3 ly (61.4 ± 0.8 pc) |
Absolute magnitude (MV) | 0.80[5] |
Details | |
Mass | 2.55[6] M☉ |
Radius | 2.2[7] R☉ |
Luminosity | 41.42[5] L☉ |
Surface gravity (log g) | 3.92[6] cgs |
Temperature | 9,230[6] K |
Metallicity [Fe/H] | −0.01[8] dex |
Rotational velocity (v sin i) | 141[6] km/s |
Age | 482[6] Myr |
Other designations | |
Database references | |
SIMBAD | data |
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]
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