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 | |
| 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
- 1 2 3 4 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. Vizier catalog entry - 1 2 3 4 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.
- ↑ 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
- ↑ 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 3 4 "58 Cygni". SIMBAD Astronomical Database. Retrieved 2016-04-10.
- ↑ 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.
- ↑ 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/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451 Vizier catalog entry
- ↑ 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:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x Vizier catalog entry
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