Iota1 Cygni

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
Distance351 ± 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
SIMBADdata

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

  1. 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
  2. 1 2 3 4 5 6 "Iota1 Cygni". SIMBAD Astronomical Database. Retrieved 2016-04-10.
  3. 1 2 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  M = m + 5 (1 + \log_{10}{p})\!\,, where M is the star's absolute magnitude, m is the star's apparent magnitude, and p is the star's measured parallax in arcseconds.
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