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	V0776 Her, 45 Her, HR 6234, HD 151525, SAO 121865, BD +5 3272, FK5: 3333, WDS 16478+0515
constellation	Hercules

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

position, motion, parallax:

position (J2000)	RA: 16h 47min 46.4sec	DEC: +5° 14' 48''
position (B1900)	RA: 16h 42min 50.9sec	DEC: +5° 25' 34''
proper motion (J2000)	RA: -0.016 arcsec/a	DEC: -0.041 arcsec/a
radial velocity	-16 km/s note: spectroscopic binaries
rotational velocity	42 km/s (uncertain) (variable)
trigonometric parallax	0.014 arcsec
galactic coordinates	longitude: 22.85°	latitude: 29.8°

magnitude

visual magnitude

5.24 (V on UBV Johnson system)

spectral / color information

spectral class	B9pCr:
B-V-magnitude	-0.02
U-B-magnitude	-0.02

note (category: spectra):

Oxygen deficient relative to magnesium.

variability information

variable star identification

V776 Her

note (category: variability):

Alpha CV, 5.21 - 5.27V, amp. 0.04U, 1.31159d.

double/multiple star system information

separation	122.7 arcsec
mag difference (of double or brightest multiple)	5.2
note	Worley (1978) update of the IDS

miscellaneous information

note (category: group membership):

Possible Pleiades group.

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

position, motion, parallax:

position (J2000)	RA: 16h 47min 46.426sec	DEC: +5° 14' 48.86''	±0.43 arcsec	source: 16
proper motion (J2000)	RA: -0.0012 arcsec/a	DEC: -0.026 arcsec/a		source: 25
radial velocity	-16 km/s			source: 25
trigonometric parallax	0.014 arcsec		±0.001 arcsec	source: 25
galactic coord. (B1950)	longitude: 22.85°	latitude: 29.8°

magnitude:

visual	5.24 (observed)	source: 25
photovisual	5.3	source: 2
photographic	5.1	source: 16

spectral information:

spectral class	A0		source: 96
Morgan-Keenan	B9pCr:		source: 25
B-magnitude	5.22 ±0.05	B-V-magnitude	-0.02
U-magnitude	5.2 ±0.05	U-B-magnitude	-0.02

variability information:

source of data: 27

variability type	160
var. amplitude	0.1

double/multiple star system information:

source of data: 19

separation between brightest and second brightest component	122.7 arcsec
magnitude difference between brightest and second brightest component	5.91
position angle	82 °

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
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
27	Catalog of Red Magnitudes (CRM)
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: 16h 45min 18.566sec	DEC: +5° 20' 5.94''	±0.012 arcsec
position (J2000)	RA: 16h 47min 46.411sec	DEC: +5° 14' 48.29''
proper motion B1950 (FK4)	RA: -0.0014 arcsec/a	DEC: -0.039 arcsec/a	±0.003 arcsec/a in RA ±0.003 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.0012 arcsec/a	DEC: -0.038 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	5.3 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

spectral class	A0p
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	GC, catalogue number: 22605
Durchmusterung	BD+05 3272
Boss General Catalogue	22605
Henry Draper Catalogue	151525

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

position and proper motion:

position (J2000)	RA: 16h 47.8min	DEC: +5° 15'
proper motion (J2000)	RA: -0.016 arcsec/a	DEC: -0.041 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
-	1911	2	84°	122.7''	5.24	11.15	B9pCr:	BUP 174
	1959		82°	-

discoverer information:

discoverer code	discoverer	reference
BUP 174	-	-

notes:

note	45 Her. A is a spectroscopic binary, and is variable.

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

position:

position (equinox 1950.0)

RA: 16h 45min 18.6sec

DEC: +5° 20' 6''

variability informations:

variability type	ACV	rotating variable star
magnitute at max. brightness	5.21
magnitute at min. brightness	5.27
photometric system	visual, photovisual or Johnson's V

references

to a study	E.W.Burke, T.H.Barr, PASP 93,344,1981.
to a chart/photograph	no chart is avaible, but the star is contained in the 'Bonner Durchmusterung'

miscanellous

ID in the GCVS catalogue	40/776
constellation	Hercules
notes on existence	The star is equivalent to '67371'.

variability type description

variability type

description

ACV

Alpha2 Canum Venaticorum variables. These are main-sequence stars with spectral types B8p-A7p and displaying strong magnetic fields. Spectra show abnormally strong lines of Si, Sr, Cr, and rare earths whose intensities vary with rotation. They exhibit magnetic field and brightness changes (periods of 0.5-160 days or more). The amplitudes of the brightness changes are usually withine 0.01-0.1 mag in V. ACVO Rapidly oscillating Alpha2 CVn variables. These are nonradially pulsating, rotating magnetic variables of Ap spectral type (DO Eri). Pulsation periods are in the range of 6-12 mmag (0.004-0.01 days), while amplitudes of light variation caused by the pulsation are about 0.01 mag in V. The pulsational variations are superposed on those caused by rotation.