G Centauri
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 4.82[2] |
| Characteristics | |
| Spectral type | B3V(n)[3] |
| B−V Template:Engvar | Template:Val[2] |
| Astrometry | |
| Radial velocity (Rv) | Template:Val[2] km/s |
| Proper motion (μ) | RA: −30.66[1] mas/yr Dec.: −10.13[1] mas/yr |
| Parallax (π) | 7.28±0.24 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | −0.87[2] |
| Details | |
| Mass | Template:Val[4] Template:Solar mass |
| Radius | 3.42[5] Template:Solar radius |
| Luminosity | 483.06[2] Template:Solar luminosity |
| Temperature | 13,732[6] K |
| Metallicity [Fe/H] | Template:Val[7] dex |
| Rotational velocity (v sin i) | Template:Val[8] km/s |
| Age | Template:Val[4] Myr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[9] | |
| Database references | |
| SIMBAD | data |
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G Centauri is a single[10] star in the southern constellation of Centaurus. It is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude of +4.82. This object is located approximately 450 light years from the Sun, based on parallax.[1] It is a member of the Lower Centaurus–Crux group of the Scorpius–Centaurus association, with the former having an age of about 17 million years.[11]
This object is a B-type main-sequence star with a stellar classification of B3V(n),[3] where the 'n' indicates "nebulous" (broad) lines due to rapid rotation. It is around 16[4] million years old with a projected rotational velocity of up to 298 km/s.[8] The star has six[4] times the mass of the Sun and 3.4[5] times the Sun's radius. It is radiating 483[2] times the luminosity of the Sun from its photosphere at an effective temperature of 13,732 K.[6] An infrared excess indicates a circumstellar disk of dust with a mean temperature of 50 K is orbiting the star at a separation of Template:Val.[5]
References
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