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 |
| Distance | approx. 480 ly (approx. 150 pc) |
| Details | |
| Luminosity | 44[5] L☉ |
| Temperature | 8,027[5] K |
| Rotational velocity (v sin i) | 196[6] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 179791 is suspected variable star in the equatorial constellation of Aquila.
References
- 1 2 3 4 5 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. - 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
- ↑ 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
- ↑ 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.
- 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, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x
- ↑ 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, arXiv:astro-ph/0610785, Bibcode:2007A&A...463..671R, doi:10.1051/0004-6361:20065224
References
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