NSV 00424

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

position, motion, parallax:

position (J2000)	RA: 1h 11min 25.6sec	DEC: +64° 12' 10''
position (B1900)	RA: 1h 4min 57.5sec	DEC: +63° 40' 15''
proper motion (J2000)	RA: 0.04 arcsec/a	DEC: -0.013 arcsec/a
radial velocity	-10 km/s note: variable radial velocity
rotational velocity	47 km/s (uncertain) (variable)
galactic coordinates	longitude: 125.1°	latitude: 1.42°

magnitude

visual magnitude

5.55
(V on UBV Johnson system)

spectral / color information

spectral class	B9.5V
B-V-magnitude	-0.07
U-B-magnitude	-0.13

variability information

variable star identification

424

note (category: variability):

E?, 5.35 - 5.59V.

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

position, motion, parallax:

position (J2000)	RA: 1h 11min 25.572sec	DEC: +64° 12' 9.45''	ą0.35 arcsec	source: 17
proper motion (J2000)	RA: 0.0062 arcsec/a	DEC: -0.025 arcsec/a		source: 25
radial velocity	-10 km/s			source: 25
galactic coord. (B1950)	longitude: 125.11°	latitude: 1.42°

magnitude:

visual	5.55 (observed)	source: 25
photovisual	5.5	source: 2
photographic	5.4	source: 16

spectral information:

spectral class	B9		source: 96
Morgan-Keenan	B9.5V		source: 25
B-magnitude	5.48 ą0.05	B-V-magnitude	-0.07
U-magnitude	5.35 ą0.05	U-B-magnitude	-0.13

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
17	ACRS
Corbin, T.E., and S.E. Urban, Astrographic Catalog Reference Stars, United States Naval Observatory, 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 8min 10.309sec	DEC: +63° 56' 15.3''	ą0.033 arcsec
position (J2000)	RA: 1h 11min 25.577sec	DEC: +64° 12' 10.44''
proper motion B1950 (FK4)	RA: 0.0061 arcsec/a	DEC: -0.007 arcsec/a	ą0.006 arcsec/a in RA ą0.004 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0061 arcsec/a	DEC: -0.013 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	5.5 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

spectral class	B9
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	GC, catalogue number: 1426
Durchmusterung	BD+63 149
Boss General Catalogue	1426
Henry Draper Catalogue	6960

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

position:

position (equinox 1950.0)

RA: 1h 8min 10.3sec

DEC: +63° 56' 15''

variability informations:

variability type	E:	close binary eclipsing system
magnitute at max. brightness	5.35
magnitute at min. brightness	5.59
photometric system	visual, photovisual or Johnson's V

spectral information

spectral class

references

to a study

111036D (designation: +63 149)

variability type description

variability type

description

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.