HR 129

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

position, motion, parallax:

magnitude

visual magnitude

6.42
(V on UBV Johnson system)

spectral / color information

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

position, motion, parallax:

magnitude:

visual	6.41 (observed)	source: 25
photovisual	6.4	source: 2

spectral information:

double/multiple star system information:

source of data: 19

separation between brightest and second brightest component	47 arcsec
magnitude difference between brightest and second brightest component	14.4
position angle	228 °

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
19	WDS Catalog
Worley, C.E., and G.G. Douglass, Washington Catalog of Visual Double Stars 1996.0, United States Naval Observatory, 1996
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: 0h 30min 18.683sec	DEC: +70° 42' 22.57''	±0.028 arcsec
position (J2000)	RA: 0h 33min 19.454sec	DEC: +70° 58' 54.69''
proper motion B1950 (FK4)	RA: 0.0077 arcsec/a	DEC: 0.005 arcsec/a	±0.004 arcsec/a in RA ±0.004 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0077 arcsec/a	DEC: -0.002 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	6.4 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

spectral class	A0
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues