Kappa Pictoris
Star in the constellation Pictor / From Wikipedia, the free encyclopedia
κ Pictoris, Latinised as Kappa Pictoris, is a star in the constellation Pictor. It is close to the lower limit of stars that are visible to the naked eye having an apparent visual magnitude of +6.11.[2] Based upon an annual parallax shift of 5.14 mas as seen from Earth,[1] this star is located around 630 light years from the Sun. At that distance, the visual magnitude is diminished by an extinction factor of 0.10 due to interstellar dust.[5]
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Pictor |
Right ascension | 05h 22m 22.14661s[1] |
Declination | −56° 08′ 03.8409″[1] |
Apparent magnitude (V) | +6.11[2] |
Characteristics | |
Spectral type | B8/9 V[3] |
B−V color index | −0.10[2] |
Astrometry | |
Radial velocity (Rv) | −5.0±7.4[4] km/s |
Proper motion (μ) | RA: −5.03[1] mas/yr Dec.: +22.01[1] mas/yr |
Parallax (π) | 5.14 ± 0.25 mas[1] |
Distance | 630 ± 30 ly (195 ± 9 pc) |
Absolute magnitude (MV) | +0.34[5] |
Details[6] | |
Mass | 3.42±0.07 M☉ |
Luminosity | 210 L☉ |
Temperature | 11,641 K |
Rotational velocity (v sin i) | 264 km/s |
Age | 256[5] Myr |
Other designations | |
Database references | |
SIMBAD | data |
This is a B-type main sequence star with a stellar classification of B8/9 V.[3] It is about 76.4% of the way through its main sequence lifespan.[6] The star is spinning rapidly with a projected rotational velocity of 264 km/s.[6] It has an estimated 3.4 times the mass of the Sun and is radiating 210 times the Sun's luminosity from its photosphere at an effective temperature of 11,641 K.[6]