Nu Cygni

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Nu Cygni
Observation data
Epoch J2000      Equinox J2000
Constellation Cygnus
Right ascension 20h 57m 10.41907s [1]
Declination 41° 10′ 01.6991″ [1]
Apparent magnitude (V) 3.94 [2]
Characteristics
Spectral type A1Vn [3]
U−B color index +0.00 [2]
B−V color index +0.02 [2]
Astrometry
Radial velocity (Rv) -27.60[4] km/s
Proper motion (μ) RA: +9.64[5] mas/yr
Dec.: -22.75[5] mas/yr
Parallax (π) 8.71 ± 0.34[1] mas
Distance 370 ± 10 ly
(115 ± 4 pc)
Absolute magnitude (MV) -1.36 [6]
Details
Radius 1.90 [7] R
Other designations
58 Cygni, FK5 788, GC 29251, HIP 103413, HR 8028, HD 199629, SAO 50274, WDS J20572+4110AB [5]
Database references
SIMBAD data

Nu Cygni (ν Cyg) is a class A1V[5] (white main-sequence) star in the constellation Cygnus. Its apparent magnitude is 3.94[2] and it is approximately 374 light years away based on parallax.[1] The star consists of a primary (A1V at apparent magnitude 4.07) and one companion at apparent magnitude 6.4 with separation 0.24".[8]

References[edit]

  1. ^ a b c d van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752free to read. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  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: 0. Bibcode:2002yCat.2237....0D. 
  3. ^ Jaschek, M. (July 1978), "Catalogue of selected spectral types in the MK system", Bulletin d'Information du Centre de Donnees Stellaires, 15 (121), Bibcode:1978BICDS..15..121J  Vizier catalog entry
  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. ^ a b c d "58 Cygni". SIMBAD Astronomical Database. Retrieved 2016-04-10. 
  6. ^ Absolute magnitude calculated as , where is the star's absolute magnitude, is the star's apparent magnitude, and is the star's measured parallax in arcseconds.
  7. ^ Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition", Astronomy and Astrophysics, 367: 521–524, arXiv:astro-ph/0012289free to read, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451  Vizier catalog entry
  8. ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878free to read, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x  Vizier catalog entry