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	CU Dra, 10 Dra, HR 5226, HD 121130, SAO 16199, BD +65 963, FK5: 511, WDS 13514+6443A
constellation	Draco

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

position, motion, parallax:

position (J2000)	RA: 13h 51min 25.9sec	DEC: +64° 43' 24''
position (B1900)	RA: 13h 48min 30.6sec	DEC: +65° 13' 2''
proper motion (J2000)	RA: 0.001 arcsec/a	DEC: -0.002 arcsec/a
radial velocity	-11 km/s note: suspected variable radial velocity
trigonometric parallax	0.014 arcsec
galactic coordinates	longitude: 112.77°	latitude: 51.21°

magnitude

visual magnitude

4.65 (V on UBV Johnson system)

spectral / color information

spectral class	M3.5III
B-V-magnitude	1.58
U-B-magnitude	1.89
R-I-magnitude
IR-note	object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

variability information

variable star identification

CU Dra

note (category: variability):

Lb? 4.52 - 4.67V.

double/multiple star system information

number of components of multiple star system	3
separation	90.2 arcsec
mag difference (of double or brightest multiple)	7.7
component ID	AC

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

position, motion, parallax:

position (J2000)	RA: 13h 51min 25.921sec	DEC: +64° 43' 23.75''	±0.06 arcsec	source: 15
proper motion (J2000)	RA: 0.0001 arcsec/a	DEC: -0.002 arcsec/a		source: 25
radial velocity	-11 km/s			source: 25
trigonometric parallax	0.014 arcsec		±0.001 arcsec	source: 25
galactic coord. (B1950)	longitude: 112.77°	latitude: 51.21°

magnitude:

visual	4.5 (observed)	source: 31
photovisual	4.8	source: 2

spectral information:

spectral class	M0		source: 96
Morgan-Keenan	M3.5III		source: 25
B-magnitude	6.23 ±0.05	B-V-magnitude	1.58
U-magnitude	8.12 ±0.05	U-B-magnitude	1.89

variability information:

source of data: 30

variability type	171
var. amplitude	0.15

double/multiple star system information:

source of data: 19

separation between brightest and second brightest component	54.8 arcsec
magnitude difference between brightest and second brightest component	8.4
position angle	26 °

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
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
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: 13h 49min 58.224sec	DEC: +64° 58' 11.15''	±0.004 arcsec
position (J2000)	RA: 13h 51min 25.915sec	DEC: +64° 43' 23.73''
proper motion B1950 (FK4)	RA: -0.0006 arcsec/a	DEC: -0.006 arcsec/a	±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0 arcsec/a	DEC: -0.002 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	4.8 (accuracy: 2 decimals)
source of visual magnitude data	Taken from the "Henry Draper Catalogue".

spectral information:

spectral class	M0
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	FK4, catalogue number: 511
Durchmusterung	BD+65 963
Boss General Catalogue	18750
Henry Draper Catalogue	121130

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

position and proper motion:

position (J2000)	RA: 13h 51.4min	DEC: +64° 43'
proper motion (J2000)	RA: 0.001 arcsec/a	DEC: -0.002 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	1879	4	26°	56.3''	4.65	13	M3III	HJ 3342
	1924		-	54.8''
AC	1879	3	65°	90.9''	4.8	11.8	-	HJ 3342
	1911		63°	90.2''

discoverer information:

discoverer code	discoverer	reference
HJ 3342	Herschel, J.	-

notes:

note	10 Dra. A is an irregular variable, CU Dra.

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

position:

position (equinox 1950.0)

RA: 13h 49min 58.2sec

DEC: +64° 58' 11''

variability informations:

variability type	LB:	pulsating variable star
magnitute at max. brightness	4.52
magnitute at min. brightness	4.67
photometric system	visual, photovisual or Johnson's V

spectral information

spectral class

M3III

references

to a study	Vol. II GCVS
to a chart/photograph	no chart is avaible, but the star is contained in the 'Bonner Durchmusterung'

miscanellous

ID in the GCVS catalogue	34/121
constellation	Draco
notes on existence	The star is equivalent to '0340122 CV'.

variability type description

variability type

description

LB

Slow irregular variables. The light variations of these stars show no evidence of periodicity, or any periodicity present is very poorly defined and appears only occasionally. Like for the type I, stars are often attributed to this type because of being insufficiently studied. Many type L variables are really semiregulars or belong to other types. LB Slow irregular variables of late spectral types (K, M, C, S); as a rule, they are giants (CO Cyg). This type is also ascribed, in the GCVS, to slow red irregular variables in the case of unknown spectral types and luminosities. LC Irregular variable supergiants of late spectral types having amplitudes of about 1 mag in V (TZ Cas).