catalogues and names

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

SKY2000 - Master Star Catalog

Smithsonian Astrophysical Observatory Star Catalog

The Washington Visual Double Star Catalog, 1996.0

Combined General Catalogue of Variable Stars (Vol. I-III)

catalogues and names

catalogues and names

AR Cas, HR 8926, HD 221253, SAO 35478, BD +57 2748, WDS 23300+5833A

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

position, motion, parallax:

position (J2000)	RA: 23h 30min 2sec	DEC: +58° 32' 56''
position (2000.73)	RA: 23h 30min 4sec	DEC: +58° 33' 10''
position (B1900)	RA: 23h 25min 24.6sec	DEC: +57° 59' 51''
proper motion (J2000)	RA: 0.02 arcsec/a	DEC: 0.005 arcsec/a
radial velocity	-13 km/s note: spectroscopic binaries, single lined spectra note: orbital data avaible
rotational velocity	144 km/s (uncertain) (variable)
dynamical parallax	0.006 arcsec
galactic coordinates	longitude: 112.47°	latitude: -2.66°

note (category: dynamical parallaxes):

0.003" for components CD.

magnitude

visual magnitude

4.91 (V on UBV Johnson system)

spectral / color information

spectral class	B3IV
B-V-magnitude	-0.12
U-B-magnitude	-0.64
R-I-magnitude

variability information

variable star identification

AR Cas

note (category: variability):

ADS 16795A, EA 4.84 - 4.98V, 6.0663309d; i 90d.

double/multiple star system information

number of components of multiple star system	8
separation	75.7 arcsec
mag difference (of double or brightest multiple)	2.3
component ID	AC

note (category: double and multiple data):

AB, 4.9, 9.3V, 1500y, sep. 1.1". CD, 8.2 A0Vn, 9.8v, sep. 1.6"; vsini of C, 210k/s. Component E, optical.

note (category: spectroscopic binaries):

ADS 16795A, 6.0663d, K 56.7k/s, V0 -13.4k/s, asini 4.58. Alternate orbits 6.0663309d, K 54.18k/s, V0 -10.10k/s, asini 4.44; 6.0668d, K 56.2k/s, V0 -11.0k/s, asini 4.6027. Apsidal period 1500 1800y.

miscellaneous information

note (category: group membership):

Cas-Tau OB1.

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

position, motion, parallax:

position (J2000)	RA: 23h 30min 1.924sec	DEC: +58° 32' 56.07''	±0.2 arcsec	source: 52
position (2000.73)	RA: 23h 30min 4sec	DEC: +58° 33' 10''	JD: 2451810.11
proper motion (J2000)	RA: 0.0021 arcsec/a	DEC: 0.002 arcsec/a		source: 25
radial velocity	-13 km/s			source: 25
galactic coord. (B1950)	longitude: 112.47°	latitude: -2.66°

magnitude:

visual	4.8 (observed)	source: 31
photovisual	4.9	source: 2
photographic	4.7	source: 16

spectral information:

spectral class	B3		source: 96
Morgan-Keenan	B3IV		source: 25
B-magnitude	4.79 ±0.05	B-V-magnitude	-0.12
U-magnitude	4.15 ±0.05	U-B-magnitude	-0.64

variability information:

source of data: 30

variability type	10
var. amplitude	0.14
var. period	6.07
var. epoch	2435793 15. November 1956, 12:00:00 UT
next max light	2451811.73 24. September 2000, 05:31:12 UT

double/multiple star system information:

source of data: 19

separation between brightest and second brightest component	0.9 arcsec
magnitude difference between brightest and second brightest component	4.4
position angle	340 °

component	magnitude	spectral class	catalogue(s)/name(s)
A	4.8	B3	HR 8926, HD 221253, SAO 35478
B	7.08	A0

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
16	PPM North and PPM South Catalogs and PPM Supplement
Roser, S., and U. Bastian, "Catalogue of Positions and Proper Motions," A&AS, Vol. 74, p. 449, 1988, and Bastian, U., et al., "Catalogue of Positions and Proper Motions - South," 1993
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
30	GCVS, 4th edition
Kholopov, P.N., et al., General Catalogue of Variable Stars, fourth edition, Moscow: Nauka Publishing House, 1985-88
31	CRM' (non-GCVS variable data)
Warren, W.H. Jr., Northern Hemisphere Catalog of Red Magnitudes, 1994
52	PPMN-HP subset
PPMN Star Catalogue (Reference 16) High-Precision Subset (Code H)
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: 23h 27min 42.774sec	DEC: +58° 16' 23.3''	±0.015 arcsec
position (2000.73)	RA: 23h 30min 4sec	DEC: +58° 33' 10''	JD: 2451810.11
position (J2000)	RA: 23h 30min 1.965sec	DEC: +58° 32' 56.28''
proper motion B1950 (FK4)	RA: 0.0024 arcsec/a	DEC: 0.01 arcsec/a	±0.003 arcsec/a in RA ±0.002 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0026 arcsec/a	DEC: 0.005 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	4.9 (accuracy: 1 decimal)
source of visual magnitude data	Source cited in source catalog introduction.

spectral information:

spectral class	B3
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

remarks for duplicity and variability

Variable star in visual magnitude in source catalog

catalogues

source catalogue	GC, catalogue number: 32683
Durchmusterung	BD+57 2748
Boss General Catalogue	32683
Henry Draper Catalogue	221253

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

position and proper motion:

position (J2000)	RA: 23h 30min	DEC: +58° 33'
proper motion (J2000)	RA: 0.02 arcsec/a	DEC: 0.007 arcsec/a

double/multiple star system information:

component	year	number of measures	position angle	angular separation	magnitude of 1st component	magnitude of 2nd component	spectral class(es)	discoverer code
AB	1851	9	340°	1.5''	4.9	9.3	B3IV	STT 496
	1970		-	0.9''
AC	1841	13	269°	75.7''	4.9	7.1	-	SHJ 355
AE	1870	6	115°	43.3''	4.9	11.28	-	HJ 1888
	1930		-	42.4''
AF	1870	4	338°	67.2''	4.9	11.06	-	HJ 1888
AG	1914	2	348°	67''	4.9	11.11	-	HJ 1888
CD	1841	35	227°	1.4''	7.1	8.9	A1V	DA 2
	1991		215°	-
CH	1841	2	341°	23.4''	7.1	12.9	-	HJ 1886
	1880		337°	26.9''
FG	1870	10	74°	10.6''	8.9	9.1	-	HJ 1887

discoverer information:

discoverer code	discoverer	reference
STT 496	Struve, O.	-
SHJ 355	South & Herschel	-
HJ 1888	Herschel, J.	-
DA 2	Dawes, W.R.	-
HJ 1886	Herschel, J.	-
HJ 1887	Herschel, J.	-

notes:

note	AB: BDS 12349. H VI 25 same star. A is the Algol-type system AR Cas.

data from Combined General Catalogue of Variable Stars (Vol. I-III) (Kholopov+ 1998)

position:

position (equinox 1950.0)

RA: 23h 27min 42.8sec

DEC: +58° 16' 23''

variability informations:

variability type	EA/DM	close binary eclipsing system
magnitute at max. brightness	4.82
magnitute at min. brightness	4.96
photometric system	visual, photovisual or Johnson's V
epoch for maximum light [JD]	2435792.8948 15. November 1956, 09:28:31 UT
period [d]	6.0663309
next maximum light [JD]	2451814.0747069 26. September 2000, 13:47:35 UT
duration of the eclipse	06 % of period the duration of the light constancy phase at minimum light is equal to zero

spectral information

spectral class

B3IV-V

references

to a study	Vol. I GCVS (see Kholopov et al. 1985-1988)
to a chart/photograph	no chart is avaible, but the star is contained in the 'Bonner Durchmusterung'

miscanellous

ID in the GCVS catalogue	18/71
constellation	Cassiopeia
notes on existence	The star is equivalent to '0180072 AS'.
There are notes in published catalog.

variability type description

variability type	description
EA	Eclipsing binary systems. These are binary systems with orbital planes so close to the observer's line of sight (the inclination i of the orbital plane to the plane orthogonal to the line of sight is close to 90 deg) that the components periodically eclipse each other. Consequently, the observer finds changes of the apparent combined brightness of the system with the period coincident with that of the components' orbital motion. EA Algol (Beta Persei)-type eclipsing systems. Binaries with spherical or slightly ellipsoidal components. It is possible to specify, for their light curves, the moments of the beginning and end of the eclipses. Between eclipses the light remains almost constant or varies insignificantly because of reflection effects, slight ellipsoidality of components, or physical variations. Secondary minima may be absent. An extremely wide range of periods is observed, from 0.2 to >= 10000 days. Light amplitudes are also quite different and may reach several magnitudes. EB Beta Lyrae-type eclipsing systems. These are eclipsing systems having ellipsoidal components and light curves for which it is impossible to specify the exact times of onset and end of eclipses because of a continuous change of a system's apparent combined brightness between eclipses; secondary minimum is observed in all cases, its depth usually being considerably smaller than that of the primary minimum; periods are mainly longer than 1 day. The components generally belong to early spectral types (B-A). Light amplitudes are usually <2 mag in V. EW W Ursae Majoris-type eclipsing variables. These are eclipsers with periods shorter than 1 days, consisting of ellipsoidal components almost in contact and having light curves for which it is impossible to specify the exact times of onset and end of eclipses. The depths of the primary and secondary minima are almost equal or differ insignificantly. Light amplitudes are usually <0.8 mag in V. The components generally belong to spectral types F-G and later.
DM	Detached main-sequence systems. Both components are main-sequence stars and do not fill their inner Roche lobes.