catalogues and names

The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)

SKY2000 - Master Star Catalog

Smithsonian Astrophysical Observatory Star Catalog

catalogues and names

catalogues and names	k Per, HR 918, HD 18970, SAO 23791, BD +56 767, FK5: 2217
constellation	Perseus

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

position, motion, parallax:

position (J2000)	RA: 3h 5min 32.4sec	DEC: +56° 42' 21''
position (B1900)	RA: 2h 58min 1.3sec	DEC: +56° 18' 48''
proper motion (J2000)	RA: -0.014 arcsec/a	DEC: 0.067 arcsec/a
radial velocity	-45 km/s note: variable radial velocity
rotational velocity	<19 km/s
trigonometric parallax	0.005 arcsec
galactic coordinates	longitude: 140.59°	latitude: -1.5°

magnitude

visual magnitude

4.76 (V on UBV Johnson system)

spectral / color information

spectral class	G9.5III
B-V-magnitude	1.02
U-B-magnitude	0.86
IR-note	object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

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

position, motion, parallax:

position (J2000)	RA: 3h 5min 32.41sec	DEC: +56° 42' 20.53''	±0.22 arcsec	source: 15
proper motion (J2000)	RA: -0.0016 arcsec/a	DEC: 0.067 arcsec/a		source: 25
radial velocity	-45 km/s			source: 25
trigonometric parallax	0.005 arcsec		-	source: 25
galactic coord. (B1950)	longitude: 140.59°	latitude: -1.5°

magnitude:

visual	4.76 (observed)	source: 25
photovisual	5.1	source: 2

spectral information:

spectral class	K0		source: 96
Morgan-Keenan	G9.5III		source: 25
B-magnitude	5.78 ±0.05	B-V-magnitude	1.02
U-magnitude	6.64 ±0.05	U-B-magnitude	0.86

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: 3h 1min 45.968sec	DEC: +56° 30' 40.39''	±0.025 arcsec
position (J2000)	RA: 3h 5min 32.411sec	DEC: +56° 42' 21.14''
proper motion B1950 (FK4)	RA: -0.0019 arcsec/a	DEC: 0.077 arcsec/a	±0.005 arcsec/a in RA ±0.003 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.002 arcsec/a	DEC: 0.073 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	5.1 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

spectral class	K0
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	GC, catalogue number: 3674
Durchmusterung	BD+56 767
Boss General Catalogue	3674
Henry Draper Catalogue	18970