Delta Pictoris

Delta Pictoris (δ Pic) is a class B3III[3] (blue giant) star in the constellation Pictor. Its apparent magnitude is 4.72[2] and it is approximately 1300 light years away based on parallax.[1]

δ Pictoris
Location of δ Pictoris (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Pictor
Right ascension  06h 10m 17.90808s[1]
Declination −54° 58′ 07.1134″[1]
Apparent magnitude (V) 4.72[2]
Characteristics
Spectral type B3III+O9V[3]
U−B color index −1.00[4]
B−V color index −0.25[4]
Variable type β Lyr[5]
Astrometry
Radial velocity (Rv)+30.60[6] km/s
Proper motion (μ) RA: −4.90[1] mas/yr
Dec.: +7.41[1] mas/yr
Parallax (π)2.51 ± 0.15[1] mas
Distance1,300 ± 80 ly
(400 ± 20 pc)
Absolute magnitude (MV)−3.27[2]
Details
Mass7.9[7] M☉
Luminosity6179[8] L☉
Temperature17,100[8] K
Rotational velocity (v sin i)221[3] km/s
Other designations
FK5 235, GC 7898, HD 42933, HIP 29276, HR 2212, SAO 234359
Database references
SIMBADdata

It is a β Lyrae variable, a type of eclipsing binary, which ranges in brightness from 4.90 to 4.65 magnitude with a period of 1.67 days.[5]

References
  1. Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. Vizier catalog entry
  3. Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H. 5050. Bibcode:1995yCat.5050....0H.
  4. Mermilliod, J. C. (2006). "VizieR Online Data Catalog: Homogeneous Means in the UBV System (Mermilliod 1991)". VizieR On-line Data Catalog: II/168. Originally Published in: Institut d'Astronomie. 2168. Bibcode:2006yCat.2168....0M.Vizier catalog entry
  5. Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....1.2025S.
  6. Evans, D. S. (1967). "The Revision of the General Catalogue of Radial Velocities". Determination of Radial Velocities and their Applications. 30: 57. Bibcode:1967IAUS...30...57E.
  7. Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410: 190. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x. Vizier catalog entry
  8. Hohle, M.M.; Neuhäuser, R.; Schutz, B.F. (2010). "Masses and luminosities of O- and B-type stars and red supergiants". Astronomische Nachrichten. 331 (4): 349. arXiv:1003.2335. Bibcode:2010AN....331..349H. doi:10.1002/asna.200911355. Vizier catalog entry


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