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45 Draconis

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This is an old revision of this page, as edited by Lithopsian (talk | contribs) at 18:56, 14 April 2016 (new key for Category:Hipparcos objects: "090905" using HotCat). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

45 Draconis
Location of 45 Dra (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Draco
Right ascension 18h 32m 34.52235s[1]
Declination +57° 02′ 44.1531″[1]
Apparent magnitude (V) 4.78[2]
Characteristics
Spectral type F7Ib[3]
B−V color index +0.59[2]
Astrometry
Radial velocity (Rv)−12.50[4] km/s
Proper motion (μ) RA: 0.08[1] mas/yr
Dec.: −7.45[1] mas/yr
Parallax (π)1.54 ± 0.18 mas[1]
Distanceapprox. 2,100 ly
(approx. 650 pc)
Absolute magnitude (MV)−3.5[5]
Details
Mass8.2[3] M☉
Radius62[6] R☉
Luminosity5,450[7] L☉
Surface gravity (log g)2.1[3] - 2.4[5] cgs
Temperature6,151[5] K
Metallicity [Fe/H]−0.04[5] dex
Rotational velocity (v sin i)10[3] km/s
Age33[8] Myr
Other designations
d Dra, 45 Dra, HR 6978, BD+56°2113, HD 171635, SAO 31039, FK5 3475, HIP 90905
Database references
SIMBADdata

45 Draconis (d Dra) is a yellow supergiant star in the constellation Draco.

References

  1. ^ a b c d e Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
  2. ^ a b Luck, R. Earle (2014). "Parameters and Abundances in Luminous Stars". The Astronomical Journal. 147 (6): 137. Bibcode:2014AJ....147..137L. doi:10.1088/0004-6256/147/6/137.
  3. ^ a b c d Lyubimkov, Leonid S.; Lambert, David L.; Kaminsky, Bogdan M.; Pavlenko, Yakov V.; Poklad, Dmitry B.; Rachkovskaya, Tamara M. (2012). "Lithium abundance in atmospheres of F- and G-type supergiants and bright giants". Monthly Notices of the Royal Astronomical Society. 427: 11. Bibcode:2012MNRAS.427...11L. doi:10.1111/j.1365-2966.2012.21617.x.
  4. ^ 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.
  5. ^ a b c d Kovtyukh, V. V.; Gorlova, N. I.; Belik, S. I. (2012). "Accurate luminosities from the oxygen λ7771-4 Å triplet and the fundamental parameters of F-G supergiants". Monthly Notices of the Royal Astronomical Society. 423 (4): 3268. arXiv:1204.4115. Bibcode:2012MNRAS.423.3268K. doi:10.1111/j.1365-2966.2012.21117.x.
  6. ^ Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. (2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics". Astronomy and Astrophysics. 367 (2): 521. Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451.
  7. ^ McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental parameters and infrared excesses of Hipparcos stars". Monthly Notices of the Royal Astronomical Society. 427: 343. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.
  8. ^ Lyubimkov, Leonid S.; Lambert, David L.; Rostopchin, Sergey I.; Rachkovskaya, Tamara M.; Poklad, Dmitry B. (2010). "Accurate fundamental parameters for A-, F- and G-type Supergiants in the solar neighbourhood". Monthly Notices of the Royal Astronomical Society. 402 (2): 1369. arXiv:0911.1335. Bibcode:2010MNRAS.402.1369L. doi:10.1111/j.1365-2966.2009.15979.x.


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