Kaus Australis

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

note (category: star names):

KAUS AUSTRALIS.

position, motion, parallax:

note (category: radial and/or rotational velocities):

Two discordant determinations of vsini, 0 and 175k/s.

magnitude

visual magnitude

1.85
(V on UBV Johnson system)

spectral / color information

double/multiple star system information

separation	36.1 arcsec
mag difference (of double or brightest multiple)	12.3
note	Worley (1978) update of the IDS

miscellaneous information

note (category: stellar radii or diameters):

Diam. = 0.00137 - 0.00144".

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

position, motion, parallax:

magnitude:

spectral information:

double/multiple star system information:

source of data: 19

separation between brightest and second brightest component	36.1 arcsec
magnitude difference between brightest and second brightest component	6.5
position angle	302 °

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 20min 51.188sec	DEC: -34° 24' 36.94''	±0.008 arcsec
position (J2000)	RA: 18h 24min 10.371sec	DEC: -34° 23' 4.9''
proper motion B1950 (FK4)	RA: -0.0026 arcsec/a	DEC: -0.125 arcsec/a	±0.002 arcsec/a in RA ±0.002 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.0026 arcsec/a	DEC: -0.126 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

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

spectral information:

spectral class	A0
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

catalogues and names	Kaus Australis, e Sgr, 20 Sgr, HR 6879, HD 169022, SAO 210091, CD -34 12784, FK5: 689, WDS 18241-3424
constellation	Sagittarius