Lambda Pictoris
Star in the constellation Pictor / From Wikipedia, the free encyclopedia
λ Pictoris, Latinised as Lambda Pictoris, is a solitary,[7] orange-hued star in the southern constellation of Pictor. It is visible to the naked eye, having an apparent visual magnitude of +5.29.[2] With an annual parallax shift of 8.71[1] mas as seen from the Earth, it is located around 374 light-years from the Sun. At the estimated age of 2.24[4] billion years old, it is an evolved K-type giant star with a stellar classification of K0/1 III.[3] Lambda Pictoris has 2.2 times the mass of the Sun and is radiating 112 times the Sun's luminosity from its photosphere at an effective temperature of 4,581 K.[4]
Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Pictor |
Right ascension | 04h 42m 46.42350s[1] |
Declination | −50° 28′ 52.8050″[1] |
Apparent magnitude (V) | +5.29[2] |
Characteristics | |
Spectral type | K0/1 III[3] |
U−B color index | +0.74[2] |
B−V color index | +0.98[2] |
Astrometry | |
Radial velocity (Rv) | +4.60[4] km/s |
Proper motion (μ) | RA: −36.02[1] mas/yr Dec.: mas/yr |
Parallax (π) | 8.71 ± 0.18 mas[1] |
Distance | 374 ± 8 ly (115 ± 2 pc) |
Details | |
Mass | 2.20[4] M☉ |
Luminosity | 112[4] L☉ |
Surface gravity (log g) | 2.77±0.09[5] cgs |
Temperature | 4,851±45[4] K |
Metallicity [Fe/H] | −0.13±0.03[5] dex |
Age | 2.24[4] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
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