catalogues and names

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

SKY2000 - Master Star Catalog

Smithsonian Astrophysical Observatory Star Catalog

Combined General Catalogue of Variable Stars (suspected variables)

catalogues and names

catalogues and names	r UMa, NSV 04344, 8 UMa, HR 3576, HD 76827, SAO 14742, BD +68 551, FK5: 338
constellation	Ursa Major

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

position, motion, parallax:

position (J2000)	RA: 9h 2min 32.7sec	DEC: +67° 37' 47''
position (B1900)	RA: 8h 53min 31.9sec	DEC: +68° 1' 10''
proper motion (J2000)	RA: -0.021 arcsec/a	DEC: 0.019 arcsec/a
radial velocity	5 km/s note: variable radial velocity
trigonometric parallax	0.014 arcsec
galactic coordinates	longitude: 146.63°	latitude: 37.23°

magnitude

visual magnitude

4.76 (V on UBV Johnson system)

spectral / color information

spectral class	M3III-IIIbCa1
B-V-magnitude	1.53
U-B-magnitude	1.88
R-I-magnitude
IR-note	object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

variability information

variable star identification

4344

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

position, motion, parallax:

position (J2000)	RA: 9h 2min 32.702sec	DEC: +67° 37' 46.66''	±0.06 arcsec	source: 15
proper motion (J2000)	RA: -0.0038 arcsec/a	DEC: 0.019 arcsec/a		source: 25
radial velocity	5 km/s			source: 25
trigonometric parallax	0.014 arcsec		±0.001 arcsec	source: 25
galactic coord. (B1950)	longitude: 146.63°	latitude: 37.23°

magnitude:

visual	4.76 (observed)	source: 25
photovisual	5	source: 2

spectral information:

spectral class	M0		source: 96
Morgan-Keenan	M3IIIbCa1		source: 25
B-magnitude	6.29 ±0.05	B-V-magnitude	1.53
U-magnitude	8.17 ±0.05	U-B-magnitude	1.88

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: 8h 58min 3.973sec	DEC: +67° 49' 35.21''	±0.004 arcsec
position (J2000)	RA: 9h 2min 32.718sec	DEC: +67° 37' 46.65''
proper motion B1950 (FK4)	RA: -0.0036 arcsec/a	DEC: 0.016 arcsec/a	±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.0035 arcsec/a	DEC: 0.019 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	M0
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	FK4, catalogue number: 338
Durchmusterung	BD+68 551
Boss General Catalogue	12447
Henry Draper Catalogue	76827

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

position:

position (equinox 1950.0)

RA: 8h 58min 4sec

DEC: +67° 49' 35''

variability informations:

magnitute at max. brightness	4.75
magnitute amplitude	0.07
photometric system	visual, photovisual or Johnson's V

spectral information

spectral class

M3

references

to a study

300015D (designation: HR 3576)