catalogues and names

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

SKY2000 - Master Star Catalog

Smithsonian Astrophysical Observatory Star Catalog

catalogues and names

catalogues and names	108 Her, HR 6876, HD 168913, SAO 85956, BD +29 3241
constellation	Hercules

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

position, motion, parallax:

position (J2000)	RA: 18h 20min 57.1sec	DEC: +29° 51' 32''
position (B1900)	RA: 18h 17min 5.9sec	DEC: +29° 48' 41''
proper motion (J2000)	RA: 0.014 arcsec/a	DEC: 0.057 arcsec/a
radial velocity	-20 km/s note: spectroscopic binaries, double lined spectra note: orbital data avaible
rotational velocity	20 km/s (uncertain) (variable)
trigonometric parallax	0.013 arcsec
galactic coordinates	longitude: 57.37°	latitude: 19.23°

magnitude

visual magnitude

5.63 (V on UBV Johnson system)

spectral / color information

spectral class	A5m
B-V-magnitude	0.21
U-B-magnitude	0.03
R-I-magnitude

double/multiple star system information

note (category: spectroscopic binaries):

5.5146d, K 70.1k/s, V0 -20.2k/s, msin3i 1.72, asini 5.32. vsini both components 20k/s.

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

position, motion, parallax:

position (J2000)	RA: 18h 20min 56.964sec	DEC: +29° 51' 32.25''	±0.35 arcsec	source: 17
proper motion (J2000)	RA: 0 arcsec/a	DEC: 0.055 arcsec/a		source: 25
radial velocity	-20 km/s			source: 25
trigonometric parallax	0.013 arcsec		±0.001 arcsec	source: 25
galactic coord. (B1950)	longitude: 57.37°	latitude: 19.23°

magnitude:

visual	5.63 (observed)	source: 25
photovisual	5.5	source: 2
photographic	5.6	source: 16

spectral information:

spectral class	A2		source: 96
Morgan-Keenan	A5m		source: 25
B-magnitude	5.84 ±0.05	B-V-magnitude	0.21
U-magnitude	5.87 ±0.05	U-B-magnitude	0.03

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
17	ACRS
Corbin, T.E., and S.E. Urban, Astrographic Catalog Reference Stars, United States Naval Observatory, 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: 18h 19min 1.413sec	DEC: +29° 50' 2.32''	±0.021 arcsec
position (J2000)	RA: 18h 20min 57.062sec	DEC: +29° 51' 32.49''
proper motion B1950 (FK4)	RA: 0.0009 arcsec/a	DEC: 0.057 arcsec/a	±0.004 arcsec/a in RA ±0.003 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0011 arcsec/a	DEC: 0.057 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	5.5 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

spectral class	A2
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	GC, catalogue number: 25056
Durchmusterung	BD+29 3241
Boss General Catalogue	25056
Henry Draper Catalogue	168913