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G 208-44/208-45

V1581 Cygni
Observation data
Epoch J2000      Equinox J2000
Constellation Cygnus
Right ascension 19h 53m 54.492s
Declination +44° 24′ 53.41″
Apparent magnitude (V) 13.41 / 14.01 / 16.75
Spectral type M5.5 / M6 / M5.5
Variable type Suspected
Proper motion (μ) RA: 397 mas/yr
Dec.: −482 mas/yr
Parallax (π) 220.2 ± 1.0[1] mas
Distance 14.81 ± 0.07 ly
(4.54 ± 0.02 pc)
Absolute magnitude (MV) 15.31 / 15.72 / 18.46
Luminosity 0.000084 / 0.000048 L
Companion G 208-44/208-45 B
Semi-major axis (a) 33 AU"
Other designations
GJ 1245, G 208-44/208-45, NLTT 48414, LHS 3494.
Database references
SIMBAD The system

V1581 Cygni (G 208-44/208-45, GJ 1245) is a triple star system, 14 light-years away, relatively close to the Solar System. The star system contains G 208-44 A, G 208-44 B, and G 208-45. All of the stars are rather dim. It is the 42nd closest stellar system to the Solar System, located in the constellation Cygnus.[2]


  1. ^ Van Altena W. F., Lee J. T., Hoffleit E. D. (1995). "GCTP 2835.01". The General Catalogue of Trigonometric Stellar Parallaxes (Fourth ed.). 
  2. ^ "The One Hundred Nearest Star Systems". RECONS. Retrieved 2010-04-13. 
  • Harrington, R. S.; Dahn, C. C.; Kallarakal, V. V.; Guetter, H. H.; Riepe, B. Y.; Walker, R. L.; Pier, J. R.; Vrba, F. J.; Luginbuhl, C. B.; Harris, H. C.; Ables, H. D. (1993). "U.S. Naval Observatory photographic parallaxes - List IX".  
  • Henry, Todd J.; Subasavage, John P.; Brown, Misty A.; Beaulieu, Thomas D.; Jao, Wei-Chun; Hambly, Nigel C. (2004). "The Solar Neighborhood. X. New Nearby Stars in the Southern Sky and Accurate Photometric Distance Estimates for Red Dwarfs".  
  • Smart, R. L.; Ioannidis, G.; Jones, H. R. A.; Bucciarelli, B.; Lattanzi, M. G. (2010). "Cool dwarfs stars from the Torino Observatory Parallax Program".  
  • Dittmann, Jason A.; Irwin, Jonathan M.; Charbonneau, David; Berta-Thompson, Zachory K. (2014). "Trigonometric Parallaxes for 1507 Nearby Mid-to-late M Dwarfs".   Table with parallaxes.

External links


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