Iota1 Cygni

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Iota1 Cygni
Observation data
Epoch J2000      Equinox J2000
Constellation Cygnus
Right ascension 19h 27m 25.95887s [1]
Declination 52° 19′ 13.5737″ [1]
Apparent magnitude (V) 5.75 [2]
Characteristics
Spectral type A1V [3]
B−V color index +0.00 [2]
Astrometry
Radial velocity (Rv) +1.90[4] km/s
Proper motion (μ) RA: -12.26[2] mas/yr
Dec.: -26.95[2] mas/yr
Parallax (π) 9.30 ± 0.23[1] mas
Distance 351 ± 9 ly
(108 ± 3 pc)
Absolute magnitude (MV) 0.59 [5]
Other designations
7 Cygni, GC 26893, HIP 95656, HR 7408, HD 183534, SAO 31673 [2]
Database references
SIMBAD data

Iota1 Cygni (ι1 Cyg) is a class A1V[3] (white main-sequence) star in the constellation Cygnus. Its apparent magnitude is 5.75[2] and it is approximately 351 light years away based on parallax.[1]

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 e f "Iota1 Cygni". SIMBAD Astronomical Database. Retrieved 2016-04-10. 
  3. ^ a b 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. ^ Evans, D. S. (June 20–24, 1966), "The Revision of the General Catalogue of Radial Velocities", in Batten, Alan Henry; Heard, John Frederick, Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30, University of Toronto: International Astronomical Union, Bibcode:1967IAUS...30...57E 
  5. ^ 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.