κ2 Lupi, Latinized as Kappa2 Lupi, is a white-hued star in the southern constellation of Lupus, and forms a double star with Kappa1 Lupi.[9] It is visible to the naked eye as a dim point of light with an apparent visual magnitude is 5.64. This star is located around 181 light years distant from the Sun. It is an A-type main-sequence star with a stellar classification of A3/5V.[3] However, Levato (1973) classed the star as A3IV, which would suggest it is already evolving off the main sequence.[4] The star has a high rotation rate, showing a projected rotational velocity of 160 km/s.[7]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Lupus |
Right ascension | 15h 11m 57.67549s[1] |
Declination | −48° 44′ 37.3397″[1] |
Apparent magnitude (V) | 5.70[2] |
Characteristics | |
Spectral type | A3/5V[3] or A3IV[4] |
B−V color index | +0.144±0.008[2] |
Astrometry | |
Radial velocity (Rv) | +0.0±3.7[5] km/s |
Proper motion (μ) | RA: −98.451[1] mas/yr Dec.: −43.845[1] mas/yr |
Parallax (π) | 18.0050 ± 0.1136 mas[1] |
Distance | 181 ± 1 ly (55.5 ± 0.4 pc) |
Details | |
Metallicity [Fe/H] | −0.01[6] dex |
Rotational velocity (v sin i) | 160.4±1.0[7] km/s |
Other designations | |
Database references | |
SIMBAD | data |