Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Pictor |
θ Pic AB | |
Right ascension | 05h 24m 46.28819s[1] |
Declination | −52° 18′ 58.4836″[1] |
Apparent magnitude (V) | 6.26[2] |
θ Pic C | |
Right ascension | 05h 24m 42.32511s[3] |
Declination | −52° 18′ 46.9457″[3] |
Characteristics | |
θ Pic AB | |
Spectral type | A0V[4] (A1III + Am)[5] |
B−V color index | 0.067±0.004[2] |
θ Pic C | |
Spectral type | A2V[5] |
Astrometry | |
θ Pic AB | |
Radial velocity (Rv) | −3.1±0.8[6] km/s |
Proper motion (μ) | RA: −4.00[1] mas/yr Dec.: −27.71[1] mas/yr |
Parallax (π) | 6.36 ± 0.32 mas[1] |
Distance | 510 ± 30 ly (157 ± 8 pc) |
Absolute magnitude (MV) | 0.28[2] |
θ Pic C | |
Radial velocity (Rv) | −8.20±3.7[6] km/s |
Proper motion (μ) | RA: −5.411[3] mas/yr Dec.: −27.743[3] mas/yr |
Parallax (π) | 6.3027 ± 0.0322 mas[3] |
Distance | 517 ± 3 ly (158.7 ± 0.8 pc) |
Details | |
Luminosity | 68.05[2] L☉ |
Other designations | |
θ Pic AB: θ Pic, CD−52°1198, HD 35860, HIP 25303, HR 1818, SAO 233965, WDS J05248-5219AB[7] | |
θ Pic C: CPD−52°717, HD 35859, HIP 25298, HR 1818, SAO 233964, WDS J05248-5219C[8] | |
Database references | |
θ Pic AB | |
SIMBAD | data |
θ Pic C | |
SIMBAD | data |
Theta Pictoris (θ Pic) is a star in the Pictor constellation.
Theta Pictoris is a multiple star system:[citation needed] AB: 7.0, 7.5; PA 152°, separation 0.2" C: 7.0; PA 287°, separation 38".
The Theta Pictoris system consists of a total of 4 stars.[9] Theta Pictoris C (HD 35859), an A2V star of about 6.77 magnitude,[8] can be distinguished visually with a small telescope from the main system Theta Pictoris AB; its angular separation from AB is 38.3 arc seconds.[10] Theta Pictoris AB, in turn, consists of a magnitude 6.76 A0V star[7] and a magnitude 7.40 star separated by 0.287" with an orbital period of 123.2 years and eccentricity of 0.692.[10][11] One of them is also an unresolved spectroscopic binary.[9]
Tet Pic B or HD 35859, Hip 25298, SAO 233964