HD 76728
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| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Carina |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | +3.84[2] |
| Characteristics | |
| Evolutionary stage | Bright giant |
| Spectral type | B8/9II[3] |
| B−V Template:Engvar | Script error: No such module "val".[2] |
| Variable type | Constant[4] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[2] km/s |
| Proper motion (μ) | RA: −28.18[1] mas/yr Dec.: +41.48[1] mas/yr |
| Parallax (π) | 10.20±0.10 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | −1.12[2] |
| Details | |
| Radius | 4.057[5] Template:Solar radius |
| Luminosity | 446[5] Template:Solar luminosity |
| Temperature | 13,180[5] K |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[6] | |
| Database references | |
| SIMBAD | data |
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HD 76728 is a suspected astrometric binary[7] star system in the constellation Carina. It has the Bayer designation c Carinae; HD 76728 is the identifier from the Henry Draper catalogue. The visible component has a blue-white hue and is visible to the naked eye with an apparent visual magnitude of +3.84.[2] The system is located at a distance of approximately 320 light years from the Sun based on parallax,[1] and it is drifting further away with a radial velocity of around +25 km/s.[2] It is a candidate member of the Volans-Carina Association of co-moving stars.[8]
The visible component is an aging bright giant star with a stellar classification of B8/9II.[3] The spectrum of the star displays metallic lines of magnesium.[9] The Volans-Carina Association to which it belongs has an age of 90 million years.[8] The star has four times the radius of the Sun and is radiating 450 times the Sun's luminosity from its photosphere at an effective temperature of 13,180 K.[5]
References
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