Kaus Media

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

  4. The Washington Visual Double Star Catalog, 1996.0

catalogues and names Kaus Media, d Sgr, NSV 24403, 19 Sgr, HR 6859, HD 168454, SAO 186681, FK5: 687, WDS 18210-2950A
other names Kaus Meridionalis, Media
constellation Sagittarius

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

note (category: star names): Kaus Meridionalis; Kaus Media; Media.

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

position, motion, parallax:

position (J2000) RA: 18h 20min 59,7sec DEC: -29° 49' 41''
position (J1900) RA: 18h 14min 35,5sec DEC: -29° 52' 14''
proper motion (J2000) RA: 0,035 arcsec/a DEC: -0,028 arcsec/a
radial velocity -20 km/s
note: suspected variable radial velocity
trigonometric parallax 0,047 arcsec

magnitude

visual magnitude 2,7
(V on UBV Johnson system)

spectral / color information

spectral class K3-IIIa*
B-V-magnitude 1,38
U-B-magnitude 1,55
R-I-magnitude 0,68
note (category: spectra): K3-IIIa CN0.5 Ba0.2 Fe0.5. Also classified K3IIIa CN 1 Ba 0.1 Fe 0.5.

double/multiple star system information

number of components of multiple star system 4
separation 58,1 arcsec
mag difference (of double or brightest multiple) 10,2
component ID AD

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

position, motion, parallax:

position (J2000) RA: 18h 20min 59,655sec DEC: -29° 49' 41,33'' ±0,06 arcsec source: 15
proper motion (J2000) RA: 0,0027 arcsec/a DEC: -0,028 arcsec/a source: 25
radial velocity -20 km/s source: 25
trigonometric parallax 0,047 ±0,005 arcsec source: 25
galactic coord. (B1950) longitude: 3,01° latitude: -7,15°
GCI unit vector (J2000) X: 0,079358 Y: -0,863884 Z: -0,4974

magnitude:

visual 2,7 (observed) source: 25
photovisual 2,8 source: 2

spectral information:

spectral class K0 source: 96
Morgan-Keenan K2.5IIIaCN0.5 source: 25
B-magnitude 4,08 ±0,05 B-V-magnitude 1,38
U-magnitude 5,63 ±0,05 U-B-magnitude 1,55

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 25,8 arcsec
magnitude difference between brightest and second brightest component 11,8
position angle 276 °

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 (J1950) RA: 18h 17min 47,554sec DEC: -29° 51' 4,68'' ±0,007 arcsec
position (J2000) RA: 18h 20min 59,673sec DEC: -29° 49' 41,39''
proper motion J1950 (FK4) RA: 0,003 arcsec/a DEC: -0,029 arcsec/a ±0,001 arcsec/a in RA
±0,002 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0029 arcsec/a DEC: -0,029 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 2,8 (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: 687
Durchmusterung CD-2914834
Boss General Catalogue 25024
Henry Draper Catalogue 168454

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

position and proper motion:

position (J2000) RA: 18h 21min DEC: -29° 50'
proper motion (J2000) RA: 0,035 arcsec/a DEC: -0,028 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
AB 1896 1 276° 25,8'' 2,7 14,5 K3III SEE 350
AC 1896 1 165° 40,1'' 2,7 15 K3III SEE 350
AD 1896 1 221° 58,1'' 2,7 13 K3III SEE 350

discoverer information:

discoverer code discoverer reference
SEE 350 See, T.J. -

notes:

note Delta Sgr.