QW Puppis

  (Redirected from I Puppis)

QW Puppis (QW Pup) is a class F3V[3] (yellow-white dwarf) star in the constellation Puppis. Its apparent magnitude is 4.49[2] and it is approximately 69.9 light years away based on parallax.[1]

QW Puppis
Puppis constellation map.svg
Red circle.svg
Location of QW Puppis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Puppis
Right ascension 07h 12m 33.62497s[1]
Declination −46° 45′ 33.4949″[1]
Apparent magnitude (V) 4.49[2]
Spectral type F3V Fe-1.0[3]
U−B color index -0.01[2]
B−V color index +0.32[2]
Variable type γ Dor[4]
Radial velocity (Rv)+0.10[5] km/s
Proper motion (μ) RA: -136.17[1] mas/yr
Dec.: +107.12[1] mas/yr
Parallax (π)46.67 ± 0.15 mas[1]
Distance69.9 ± 0.2 ly
(21.43 ± 0.07 pc)
Absolute magnitude (MV)2.84[6]
Mass1.52[7] M
Radius1.5[8] R
Luminosity6.4[7] L
Surface gravity (log g)4.17[9] cgs
Temperature6,934[7] K
Metallicity [Fe/H]-0.24[6] dex
Rotational velocity (v sin i)51[7] km/s
Other designations
I Puppis, QW Pup, CD-46°2977, FK5 275, GC 9569, GJ 9225, GSC 08119-02547, HIP 34834, HR 2740, HD 55892, SAO 218537
Database references
A light curve for QW Puppis, plotted from TESS data[10]

It is a Gamma Doradus variable, ranging from 4.5 to 4.47 magnitude with a period of 0.96 days.[4]


  1. ^ a b c d e f Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600. Vizier catalog entry
  2. ^ a b c d Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
  3. ^ a b Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Bubar, E. J.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (2006). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc--The Southern Sample". The Astronomical Journal. 132 (1): 161–170. arXiv:astro-ph/0603770. Bibcode:2006AJ....132..161G. doi:10.1086/504637. S2CID 119476992.
  4. ^ a b Watson, C. L. (2006). "The International Variable Star Index (VSX)". The Society for Astronomical Sciences 25th Annual Symposium on Telescope Science. Held May 23–25. 25: 47. Bibcode:2006SASS...25...47W.
  5. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
  6. ^ a b 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. S2CID 119257644. Vizier catalog entry
  7. ^ a b c d Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars". Astronomy & Astrophysics. 537: A120. arXiv:1201.2052. Bibcode:2012A&A...537A.120Z. doi:10.1051/0004-6361/201117691. S2CID 55586789. Vizier catalog entry
  8. ^ 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: 555–562. arXiv:astro-ph/9911002. Bibcode:1999A&A...352..555A. Vizier catalog entry
  9. ^ David, Trevor J.; Hillenbrand, Lynne A. (2015). "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804 (2): 146. arXiv:1501.03154. Bibcode:2015ApJ...804..146D. doi:10.1088/0004-637X/804/2/146. S2CID 33401607. Vizier catalog entry
  10. ^ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 8 December 2021.