Theta Pictoris

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Theta Pictoris
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Pictor
Right ascension 5h 24m 46.1s
Declination −52° 18' 59"
Apparent magnitude (V) 6.27[1]
Absolute magnitude (V) 0.19
Distance 510 ± 30 ly
(157 ± 8 pc)
Spectral type A0V
Other designations
HD 35860, HR 1818, SAO 233965, HIP 25303

Theta Pictoris (θ Pic, HR 1818, HD 35860, SAO 233965, CP -52 718, WDS 05248-5219A) 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.[2] Theta Pictoris C (HD 35859), an A2V star of about 6.77 magnitude,[3] 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.[4] Theta Pictoris AB, in turn, consists of a magnitude 6.76 A0V star[1] and a magnitude 7.40 star separated by 0.287" with an orbital period of 123.2 years and eccentricity of 0.692.[4][5] One of them is also an unresolved spectroscopic binary.[2]

Tet Pic B or HD 35859, Hip 25298, SAO 233964

References[edit]

  1. ^ a b "Theta Pictoris". SIMBAD Astronomical Database. Retrieved 2012-08-25. 
  2. ^ a b Eggleton, P. P.; Tokovinin, A. A (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. Bibcode:2008MNRAS.389..869E. arXiv:0806.2878Freely accessible. doi:10.1111/j.1365-2966.2008.13596.x. 
  3. ^ "SIMBAD query result - HD 35859". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2004-11-16. 
  4. ^ a b Mason, Brian D.; et al. (December 2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466–3471. Bibcode:2001AJ....122.3466M. doi:10.1086/323920. 
  5. ^ Malkov, O. Yu.; Tamazian, V. S.; Docobo, J. A.; Chulkov, D. A. (October 2012). "Dynamical masses of a selected sample of orbital binaries". Astronomy & Astrophysics. 546: article 69, 5 pp. Bibcode:2012A&A...546A..69M. doi:10.1051/0004-6361/201219774.