Kaus Borealis


The object was found in the following catalogues:
  1. The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)

  2. SKY2000 - Master Star Catalog

  3. Smithsonian Astrophysical Observatory Star Catalog


catalogues and names Kaus Borealis, l Sgr, 22 Sgr, HR 6913, HD 169916, SAO 186841, FK5: 692
constellation Sagittarius

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

note (category: star names): Kaus Borealis.

object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

position, motion, parallax:

position (J2000) RA: 18h 27min 58,2sec DEC: -25 25' 18''
position (J1900) RA: 18h 21min 47,9sec DEC: -25 28' 37''
proper motion (J2000) RA: -0,044 arcsec/a DEC: -0,185 arcsec/a
radial velocity -43 km/s
note: suspected variable radial velocity
trigonometric parallax 0,053 arcsec

magnitude

visual magnitude 2,81
(V on UBV Johnson system)

spectral / color information

spectral class K1+IIIb
B-V-magnitude 1,04
U-B-magnitude 0,89
R-I-magnitude 0,56

miscellaneous information

note (category: group membership): Hyades group.
note (category: stellar radii or diameters): Occult diam. = 0.0044".

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

position, motion, parallax:

position (J2000) RA: 18h 27min 58,246sec DEC: -25 25' 18,15'' 0,06 arcsec source: 15
proper motion (J2000) RA: -0,0032 arcsec/a DEC: -0,185 arcsec/a source: 25
radial velocity -43 km/s source: 25
trigonometric parallax 0,053 0,005 arcsec source: 25
galactic coord. (B1950) longitude: 7,67 latitude: -6,52
GCI unit vector (J2000) X: 0,109955 Y: -0,896455 Z: -0,429277

magnitude:

visual 2,81 (observed) source: 25
photovisual 2,9 source: 2
photographic 3,9 source: 2

spectral information:

spectral class K0 source: 96
Morgan-Keenan K1IIIb source: 25
B-magnitude 3,85 0,05 B-V-magnitude 1,04
U-magnitude 4,74 0,05 U-B-magnitude 0,89

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 (J1950) RA: 18h 24min 53,059sec DEC: -25 27' 4,18'' 0,005 arcsec
position (J2000) RA: 18h 27min 58,249sec DEC: -25 25' 18,11''
proper motion J1950 (FK4) RA: -0,0032 arcsec/a DEC: -0,185 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0032 arcsec/a DEC: -0,185 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 2,9 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class K0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 692
Durchmusterung CD-2513149
Boss General Catalogue 25180
Henry Draper Catalogue 169916