Theta Pictoris

Theta Pictoris
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]
Distance510 ± 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]
Distance517 ± 3 ly
(158.7 ± 0.8 pc)
Details
Luminosity68.05[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
SIMBADdata
θ Pic C
SIMBADdata

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

  1. ^ a b c d e Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference houk1978 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Veramendi2014 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Kharchenko2007 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference SIMBAD1 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference SIMBAD2 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference mnras389_2_869 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference WDS was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Malkov2012 was invoked but never defined (see the help page).