NSV 22644

data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)

position, motion, parallax:

position (J2000)	RA: 17h 33min 22.8sec	DEC: +19° 15' 24''
position (B1900)	RA: 17h 29min 2sec	DEC: +19° 19' 44''
proper motion (J2000)	RA: -0.03 arcsec/a	DEC: -0.09 arcsec/a
radial velocity	-59 km/s note: variable radial velocity
rotational velocity	=<10 km/s (uncertain) (variable)
trigonometric parallax	0.032 arcsec
galactic coordinates	longitude: 42.48°	latitude: 25.53°

magnitude

visual magnitude

5.64
(V on UBV Johnson system)

spectral / color information

data from SKY2000 - Master Star Catalog (Myers+ 1997)

position, motion, parallax:

magnitude:

visual	5.64 (observed)	source: 25
photovisual	5.6	source: 2

spectral information:

sources:

2	HD and HDE Catalogs
Cannon, A.J., and E.C. Pickering, Harvard Annals, Vols 91-99, 1918-24, Cambridge, Massachusetts: Harvard University; Cannon, A.J., Harvard Annals, Vol. 100, 1925-36, Cambridge, Massachusetts: Harvard University; and Cannon, A.J., and M. Walton Mayall, Harvard Annals, Vol. 112, 1949, Cambridge, Massachusetts: Harvard University
15	FK5, FK5 Extension and FK5 Supplement
Fricke, W., H. Schwan and T. Lederle, "Fifth Fundamental Catalogue (FK5), Part I. The Basic Fundamental Stars," Veroff. Astronomisches Recheninstitut, No. 32, Heidelberg, Germany, 1988, and Fricke, W., H. Schwan, and T.E. Corbin, "Fifth Fundamental Catalogue (FK5), Part II. The FK5 Extension," Veröff. Astronomisches Recheninstitut, No. 33, Heidelberg, Germany, 1991
25	Bright Star Catalogue, 5th edition
Hoffleit, D. and Warren, W.H. Jr., The Bright Star Catalogue, 5th Revised Edition, Version 2, 1994
96	SAO or HD/HDE Catalog
Reference from Value 1 or Reference from Value 2

data from Smithsonian Astrophysical Observatory Star Catalog (SAO Staff 1966; USNO, ADC 1990)

position and proper motion:

position (B1950)	RA: 17h 31min 12.337sec	DEC: +19° 17' 29.42''	±0.018 arcsec
position (J2000)	RA: 17h 33min 22.819sec	DEC: +19° 15' 24.04''
proper motion B1950 (FK4)	RA: -0.0022 arcsec/a	DEC: -0.093 arcsec/a	±0.004 arcsec/a in RA ±0.004 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.0021 arcsec/a	DEC: -0.092 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	5.6 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

spectral class	F5
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

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