Gamma Pictoris

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γ Pictoris
Pictor constellation map.svg
Red circle.svg

Location of γ Pictoris (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Pictor
Right ascension 05h 49m 49.66181s[1]
Declination −56° 09′ 59.9808″[1]
Apparent magnitude (V) 4.50[2]
Spectral type K1III[3]
U−B color index +0.98[4]
B−V color index +1.10[4]
Radial velocity (Rv) +15.70[5] km/s
Proper motion (μ) RA: +81.13[1] mas/yr
Dec.: -71.12[1] mas/yr
Parallax (π) 18.45 ± 0.15[1] mas
Distance 177 ± 1 ly
(54.2 ± 0.4 pc)
Absolute magnitude (MV) 0.83[2]
Mass 1.59[6] M
Radius 11[6] R
Luminosity 60.75[2] L
Surface gravity (log g) 2.56[6] cgs
Temperature 4,600[7] K
Metallicity [Fe/H] +0.15[2] dex
Rotational velocity (v sin i) 6.4[8] km/s
Other designations
FK5 1156, GC 7353, HIP 27530, HR 2042, HD 39523, SAO 234154
Database references

Gamma Pictoris (γ Pic) is a star in the constellation Pictor. Its apparent magnitude is 4.50[2] and it is approximately 176.8 light years away based on parallax.[1] A class K1III[3] orange giant, its diameter has been estimated as around 11 times that of the Sun.[6]


  1. ^ a b c d e f Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. Bibcode:2007A&A...474..653V. arXiv:0708.1752Freely accessible. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. ^ a b c d e Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. Bibcode:2012AstL...38..331A. arXiv:1108.4971Freely accessible. doi:10.1134/S1063773712050015.  Vizier catalog entry
  3. ^ a b 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. ^ a b Mallama, A. (2014). "Sloan Magnitudes for the Brightest Stars". The Journal of the American Association of Variable Star Observers. 42: 443. Bibcode:2014JAVSO..42..443M. Vizier catalog entry
  5. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. 
  6. ^ a b c d Allende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555. Bibcode:1999A&A...352..555A. arXiv:astro-ph/9911002Freely accessible.  Vizier catalog entry
  7. ^ Gontcharov, G. A. (2009). "Red giant clump in the Tycho-2 catalogue". Astronomy Letters. 34 (11): 785. Bibcode:2008AstL...34..785G. arXiv:1607.00619Freely accessible. doi:10.1134/S1063773708110078.  Vizier catalog entry
  8. ^ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics. 561: A126. Bibcode:2014A&A...561A.126D. arXiv:1312.3474Freely accessible. doi:10.1051/0004-6361/201220762.  Vizier catalog entry