psi Cassiopeiae

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

position, motion, parallax:

position (J2000)	RA: 1h 25min 56sec	DEC: +68° 7' 48''
position (B1900)	RA: 1h 18min 51.7sec	DEC: +67° 36' 29''
proper motion (J2000)	RA: 0.074 arcsec/a	DEC: 0.026 arcsec/a
radial velocity	-12 km/s note: variable radial velocity
rotational velocity	<17 km/s (uncertain) (variable)
trigonometric parallax	0.013 arcsec
galactic coordinates	longitude: 126.15°	latitude: 5.47°

magnitude

visual magnitude

4.74
(V on UBV Johnson system)

spectral / color information

spectral class	K0III
B-V-magnitude	1.05
U-B-magnitude	0.94
R-I-magnitude
IR-note	object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

double/multiple star system information

number of components of multiple star system	4
separation	23.2 arcsec
mag difference (of double or brightest multiple)	5.2
component ID	AC

note (category: double and multiple data):

ADS 1129B, 13.5v, 3" CPM with A. Component C optical, 9.18V, +0.66 (B-V), +0.34(U-B), Am.

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

position, motion, parallax:

magnitude:

visual	4.74 (observed)	source: 25
photovisual	5	source: 2

spectral information:

double/multiple star system information:

source of data: 19

separation between brightest and second brightest component	2.4 arcsec
magnitude difference between brightest and second brightest component	9.3
position angle	43 °

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: 1h 22min 22.244sec	DEC: +67° 52' 11.61''	±0.005 arcsec
position (J2000)	RA: 1h 25min 56.034sec	DEC: +68° 7' 47.98''
proper motion B1950 (FK4)	RA: 0.0135 arcsec/a	DEC: 0.032 arcsec/a	±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0135 arcsec/a	DEC: 0.025 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	5 (accuracy: 2 decimals)
source of visual magnitude data	Taken from the "Henry Draper Catalogue".

spectral information:

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

catalogues

data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)

position and proper motion:

position (J2000)	RA: 1h 25.9min	DEC: +68° 8'
proper motion (J2000)	RA: 0.074 arcsec/a	DEC: 0.026 arcsec/a

double/multiple star system information:

discoverer information:

notes:

note	Psi Cas. C and D are optical companions of A. CD is physical. H V 83, SHJ 18. C is BD+67@124.

catalogues and names	y Cas, 36 Cas, HR 399, HD 8491, SAO 11751, BD +67 123, FK5: 46, WDS 01259+6808A
constellation	Cassiopeia