Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Carina |
Right ascension | 09h 11m 16.72089s[1] |
Declination | −62° 19′ 01.1295″[1] |
Apparent magnitude (V) | +3.96[2] |
Characteristics | |
Spectral type | B3V[3] |
B−V color index | −0.180±0.006[2] |
Astrometry | |
Radial velocity (Rv) | +17.5±2.7[2] km/s |
Proper motion (μ) | RA: −37.48[1] mas/yr Dec.: +14.59[1] mas/yr |
Parallax (π) | 6.01 ± 0.12 mas[1] |
Distance | 540 ± 10 ly (166 ± 3 pc) |
Absolute magnitude (MV) | −2.14[2] |
Details | |
Mass | 7.0±0.1[4] M☉ |
Radius | 5.6[5] R☉ |
Luminosity | 2,054.17[2] L☉ |
Surface gravity (log g) | 3.5±0.1[3] cgs |
Temperature | 18,900±500[3] K |
Rotational velocity (v sin i) | 0[6] km/s |
Age | 39.2±7.0[4] Myr |
Other designations | |
Database references | |
SIMBAD | data |
HD 79447 is a single[8] star in the southern constellation of Carina. It has the Bayer designation i Carinae, while HD 79447 is the identifier from the Henry Draper catalogue. This star has a blue-white hue and is visible to the naked eye with an apparent visual magnitude of +3.96.[2] It is located at a distance of approximately 540 light years from the Sun based on parallax,[1] and has an absolute magnitude of −2.14.[2] The star drifting further away with a radial velocity of +18 km/s.[2] It is a candidate member of the Lower Centaurus–Crux group of the Sco OB2 association.[9]
This object is a B-type main-sequence star with a stellar classification of B3V.[3] A surface magnetic field has been detected with a strength on the order of 1 kG.[9] It has an estimated age of around 39[4] million years with no measured spin rate.[6] The star has about 5.6[5] times the radius of the Sun and 7[4] times the Sun's mass. It is radiating over two thousand[2] times the luminosity of the Sun from its photosphere at an effective temperature of 18,900 K.[3]
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was invoked but never defined (see the help page).Chini2012
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