Gamma1 Octantis

γ1 Octantis


Location of γ1 Octantis (circled)

Observation data
Epoch J2000      Equinox J2000
Constellation Octans
Right ascension 23h 52m 06.48895s[1]
Declination −82° 01′ 07.7489″[1]
Apparent magnitude (V) 5.10[2]
Characteristics
Spectral type G7III[3]
U−B color index +0.60[4]
B−V color index +0.92[4]
Astrometry
Radial velocity (Rv)+15.40[5] km/s
Proper motion (μ) RA: -48.74[1] mas/yr
Dec.: -21.16[1] mas/yr
Parallax (π)12.30 ± 0.17[1] mas
Distance265 ± 4 ly
(81 ± 1 pc)
Absolute magnitude (MV)0.55[2]
Details
Mass1.81[6] M☉
Radius11[6] R☉
Luminosity68.74[2] L☉
Surface gravity (log g)2.64[6] cgs
Temperature5,150[7] K
Metallicity [Fe/H]-0.34[8] dex
Rotational velocity (v sin i)1.8[9] km/s
Other designations
FK5 3997, GC 33107, HIP 117689, HR 9032, HD 223647, SAO 258989
Database references
SIMBADdata

Gamma1 Octantis (γ1 Oct) is a class G7III[3] (yellow giant) star in the constellation Octans. Its apparent magnitude is 5.10[2] and it is approximately 265 light years away based on parallax.[1]

References

  1. 1 2 3 4 5 6 Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. 1 2 3 4 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971Freely accessible. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. Vizier catalog entry
  3. 1 2 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. 1 2 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. 1 2 3 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. arXiv:astro-ph/9911002Freely accessible. Bibcode:1999A&A...352..555A. Vizier catalog entry
  7. ↑ Gontcharov, G. A. (2009). "Red giant clump in the Tycho-2 catalogue". Astronomy Letters. 34 (11): 785. arXiv:1607.00619Freely accessible. Bibcode:2008AstL...34..785G. doi:10.1134/S1063773708110078. Vizier catalog entry
  8. ↑ Soubiran, Caroline; Le Campion, Jean-François; Brouillet, Nathalie; Chemin, Laurent (2016). "The PASTEL catalogue: 2016 version". Astronomy & Astrophysics. 591: A118. arXiv:1605.07384Freely accessible. Bibcode:2016A&A...591A.118S. doi:10.1051/0004-6361/201628497.
  9. ↑ 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. arXiv:1312.3474Freely accessible. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. Vizier catalog entry
This article is issued from Wikipedia - version of the 11/30/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.