HD 179791

HD 179791
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension 19h 13m 44.02678s[1]
Declination +05° 30′ 56.1772″[1]
Apparent magnitude (V) 6.48[2]
Characteristics
Spectral type A3V[3]
U−B color index +0.10[2]
B−V color index +0.09[2]
Astrometry
Radial velocity (Rv)+16.2[4] km/s
Proper motion (μ) RA: +8.35[1] mas/yr
Dec.: −13.92[1] mas/yr
Parallax (π)6.76 ± 0.85[1] mas
Distanceapprox. 480 ly
(approx. 150 pc)
Details
Luminosity44[5] L☉
Temperature8,027[5] K
Rotational velocity (v sin i)196[6] km/s
Other designations
BD+05° 4081, HD 179791, HIP 94478, HR 7288, SAO 124410.
Database references
SIMBADdata

HD 179791 is suspected variable star in the equatorial constellation of Aquila.

References

  1. 1 2 3 4 5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752 Freely accessible. doi:10.1051/0004-6361:20078357.
  2. 1 2 3 Cousins, A. W. J. (1965), "Photometric Data for Stars in the Equatorial Zone (Eighth List)", Monthly Notes of the Astronomical Society of Southern Africa, 24: 120, Bibcode:1965MNSSA..24..120C
  3. ↑ Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819
  4. ↑ Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
  5. 1 2 McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, Bibcode:2012MNRAS.427..343M, arXiv:1208.2037 Freely accessible, doi:10.1111/j.1365-2966.2012.21873.x
  6. ↑ Royer, F.; Zorec, J.; Gómez, A. E. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics, 463 (2): 671–682, Bibcode:2007A&A...463..671R, arXiv:astro-ph/0610785 Freely accessible, doi:10.1051/0004-6361:20065224

References

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