omega Cassiopeiae

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

position, motion, parallax:

position (J2000)	RA: 1h 56min 0sec	DEC: +68° 41' 7''
position (B1900)	RA: 1h 48min 13.5sec	DEC: +68° 11' 39''
proper motion (J2000)	RA: 0.013 arcsec/a	DEC: -0.011 arcsec/a
radial velocity	-24 km/s note: spectroscopic binaries note: orbital data avaible
rotational velocity	34 km/s (uncertain) (variable)
galactic coordinates	longitude: 128.77°	latitude: 6.55°

magnitude

visual magnitude

4.99
(V on UBV Johnson system)

spectral / color information

spectral class	B8III
B-V-magnitude	-0.1
U-B-magnitude	-0.4

variability information

variable star identification

659

double/multiple star system information

note (category: spectroscopic binaries):

69.92d, K 29.6k/s, V0 -24.8k/s, asini 27.1.

miscellaneous information

note (category: group membership):

Pleiades group.

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

position, motion, parallax:

position (J2000)	RA: 1h 56min 0.009sec	DEC: +68° 41' 6.87''	±0.22 arcsec	source: 15
proper motion (J2000)	RA: 0.0024 arcsec/a	DEC: -0.011 arcsec/a		source: 25
radial velocity	-24 km/s			source: 25
galactic coord. (B1950)	longitude: 128.77°	latitude: 6.55°

magnitude:

visual	4.99 (observed)	source: 25
photovisual	5	source: 2

spectral information:

spectral class	B8		source: 96
Morgan-Keenan	B8III		source: 25
B-magnitude	4.89 ±0.05	B-V-magnitude	-0.1
U-magnitude	4.49 ±0.05	U-B-magnitude	-0.4

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: 1h 52min 4.895sec	DEC: +68° 26' 26.88''	±0.015 arcsec
position (J2000)	RA: 1h 55min 59.947sec	DEC: +68° 41' 6.55''
proper motion B1950 (FK4)	RA: 0.002 arcsec/a	DEC: -0.008 arcsec/a	±0.003 arcsec/a in RA ±0.002 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0017 arcsec/a	DEC: -0.014 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	5 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

spectral class	B8
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	GC, catalogue number: 2313
Durchmusterung	BD+67 169
Boss General Catalogue	2313
Henry Draper Catalogue	11529

data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)

position:

position (equinox 1950.0)

RA: 1h 52min 4.9sec

DEC: +68° 26' 27''

variability informations:

magnitute at max. brightness	4.95
magnitute at min. brightness	4.99
photometric system	visual, photovisual or Johnson's V

spectral information

spectral class

references

to a study

531983D (designation: OMEGA CAS)

miscanellous

There are notes in the published catalog (Kukarkin et al.(1982)).

catalogues and names	w Cas, NSV 00659, 46 Cas, HR 548, HD 11529, SAO 12038, BD +67 169, FK5: 2129
constellation	Cassiopeia