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Star in the constellation Pictor From Wikipedia, the free encyclopedia
ζ Pictoris, Latinised as Zeta Pictoris, is a solitary[10] star in the southern constellation of Pictor. It is visible to the naked eye with an apparent visual magnitude of +5.43.[2] Based upon an annual parallax shift of 28.00 mas as seen from the Earth,[1] the system is located 116.5 light years from the Sun.
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Pictor |
Right ascension | 05h 19 22.13548m [1] |
Declination | −50° 36′ 21.4820″[1] |
Apparent magnitude (V) | +5.43[2] |
Characteristics | |
Spectral type | F6 IV[3] |
U−B color index | +0.01[2] |
B−V color index | +0.52[2] |
Astrometry | |
Radial velocity (Rv) | +43.8±0.2[4] km/s |
Proper motion (μ) | RA: +23.64[1] mas/yr Dec.: +227.43[1] mas/yr |
Parallax (π) | 28.00 ± 0.23 mas[1] |
Distance | 116.5 ± 1.0 ly (35.7 ± 0.3 pc) |
Absolute magnitude (MV) | 2.65±0.04[5] |
Details[6] | |
Mass | 1.39 M☉ |
Radius | 5.3[7] R☉ |
Surface gravity (log g) | 4.07±0.07 cgs |
Temperature | 6,411±56 K |
Metallicity [Fe/H] | 0.07 dex |
Rotational velocity (v sin i) | 5.6±1.0[8] km/s |
Age | 2.6 Gyr |
Other designations | |
Database references | |
SIMBAD | data |
This is an evolving F-type subgiant star with a stellar classification of F6 IV.[3] It is a thin disk[11] star with an estimated 1.4[6] times the mass of the Sun and about 5.3[7] times the Sun's radius. At the age of 2.6[6] billion years, Zeta Pictoris is spinning with a projected rotational velocity of 5.6 km/s.[8]
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