111 Herculis

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

position, motion, parallax:

position (J2000)	RA: 18h 47min 1.3sec	DEC: +18° 10' 53''
position (B1900)	RA: 18h 42min 36.2sec	DEC: +18° 4' 12''
proper motion (J2000)	RA: 0.073 arcsec/a	DEC: 0.116 arcsec/a
radial velocity	-45 km/s note: spectroscopic binaries
rotational velocity	79 km/s (uncertain) (variable)
trigonometric parallax	0.032 arcsec
galactic coordinates	longitude: 48.76°	latitude: 9.12°

magnitude

visual magnitude

4.36
(V on UBV Johnson system)

spectral / color information

double/multiple star system information

number of components of multiple star system	4
separation	121.3 arcsec
mag difference (of double or brightest multiple)	5.5
component ID	AC
note	Worley (1978) update of the IDS

miscellaneous information

note (category: group membership):

Hyades group.

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

position, motion, parallax:

magnitude:

visual	4.36 (observed)	source: 25
photovisual	4.4	source: 2

spectral information:

double/multiple star system information:

source of data: 19

separation between brightest and second brightest component	100.5 arcsec
magnitude difference between brightest and second brightest component	6
position angle	245 °

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
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: 18h 44min 48.7sec	DEC: +18° 7' 28.04''	±0.006 arcsec
position (J2000)	RA: 18h 47min 1.272sec	DEC: +18° 10' 53.3''
proper motion B1950 (FK4)	RA: 0.0051 arcsec/a	DEC: 0.115 arcsec/a	±0.001 arcsec/a in RA ±0.002 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0051 arcsec/a	DEC: 0.116 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	4.4 (accuracy: 2 decimals)
source of visual magnitude data	Taken from the "Henry Draper Catalogue".

spectral information:

spectral class	A3
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

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

position and proper motion:

position (J2000)	RA: 18h 47min	DEC: +18° 11'
proper motion (J2000)	RA: 0.073 arcsec/a	DEC: 0.116 arcsec/a

double/multiple star system information:

discoverer information:

discoverer code	discoverer	reference
ENG 64	Engelmann, R.	-

notes:

note

111 Her.

catalogues and names	NSV 24591, 111 Her, HR 7069, HD 173880, SAO 104093, BD +18 3823, FK5: 1491, WDS 18470+1811A
constellation	Hercules