74 Herculis

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

position, motion, parallax:

position (J2000)	RA: 17h 20min 21.1sec	DEC: +46° 14' 27''
position (B1900)	RA: 17h 17min 31.6sec	DEC: +46° 20' 20''
proper motion (J2000)	RA: -0.029 arcsec/a	DEC: 0.043 arcsec/a
radial velocity	-57 km/s note: suspected variable radial velocity
galactic coordinates	longitude: 72.16°	latitude: 34.58°

magnitude

visual magnitude

5.59
(V on UBV Johnson system)

spectral / color information

spectral class	M0III
B-V-magnitude	1.57
U-B-magnitude	1.86
IR-note	object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

variability information

variable star identification

8556

miscellaneous information

note (category: group membership):

61 Cyg group.

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

position, motion, parallax:

magnitude:

visual	5.59 (observed)	source: 25
photovisual	5.8	source: 2

spectral information:

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: 17h 18min 56.237sec	DEC: +46° 17' 20.52''	±0.023 arcsec
position (J2000)	RA: 17h 20min 21.127sec	DEC: +46° 14' 27.35''
proper motion B1950 (FK4)	RA: -0.0035 arcsec/a	DEC: 0.045 arcsec/a	±0.004 arcsec/a in RA ±0.003 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.003 arcsec/a	DEC: 0.046 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	5.8 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

spectral class	K2
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

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

position:

position (equinox 1950.0)

RA: 17h 18min 56.2sec

DEC: +46° 17' 21''

variability informations:

magnitute at max. brightness	5.55
magnitute amplitude	0.08
photometric system	visual, photovisual or Johnson's V

spectral information

spectral class

references

to a study

300015D (designation: HR 6464)

catalogues and names	NSV 08556, 74 Her, HR 6464, HD 157325, SAO 46645, BD +46 2293, FK5: 3377
constellation	Hercules