G 208-44/208-45

V1581 Cygni

Observation data Epoch J2000      Equinox J2000
Constellation	Cygnus
Right ascension	19^h 53^m 54.492^s
Declination	+44° 24′ 53.41″
Apparent magnitude (V)	13.41 / 14.01 / 16.75
Characteristics
Spectral type	M5.5 / M6 / M5.5
Variable type	Suspected
Astrometry
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
Details
Luminosity	0.000084 / 0.000048 L☉
Orbit
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
	A
	C
	B

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]

References

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". Astronomical Journal 105 (4): 1571–1580. Bibcode:1993AJ....105.1571H. doi:10.1086/116537.
• 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". The Astronomical Journal 128 (5): 2460–2473. arXiv:astro-ph/0408240. Bibcode:2004AJ....128.2460H. doi:10.1086/425052.
• Smart, R. L.; Ioannidis, G.; Jones, H. R. A.; Bucciarelli, B.; Lattanzi, M. G. (2010). "Cool dwarfs stars from the Torino Observatory Parallax Program". Astronomy and Astrophysics 514: A84. arXiv:1003.1465. Bibcode:2010A&A...514A..84S. doi:10.1051/0004-6361/200913424.
• Dittmann, Jason A.; Irwin, Jonathan M.; Charbonneau, David; Berta-Thompson, Zachory K. (2014). "Trigonometric Parallaxes for 1507 Nearby Mid-to-late M Dwarfs". The Astrophysical Journal 784 (2): 156. arXiv:1312.3241. Bibcode:2014ApJ...784..156D. doi:10.1088/0004-637X/784/2/156. Table with parallaxes.

External links

• http://jumk.de/astronomie/near-stars/v1581-cygni.shtml
• http://www.answers.com/topic/list-of-nearest-stars?cat=travel
• http://www.richweb.f9.co.uk/astro/nearby_stars.htm