b Indi


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 b Ind, HR 7986, HD 198700, SAO 246784, FK5: 785, WDS 20548-5827
constellation Indus

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


position, motion, parallax:

position (J2000) RA: 20h 54min 48,6sec DEC: -58 27' 15''
position (J1900) RA: 20h 46min 59,8sec DEC: -58 49' 53''
proper motion (J2000) RA: 0,017 arcsec/a DEC: -0,026 arcsec/a
radial velocity -5 km/s
note: suspected variable radial velocity
trigonometric parallax -0,005 arcsec

magnitude

visual magnitude 3,65
(V on UBV Johnson system)

spectral / color information

spectral class K1II
B-V-magnitude 1,25
U-B-magnitude 1,23

double/multiple star system information

separation 17,3 arcsec
mag difference (of double or brightest multiple) 8,8
note Worley (1978) update of the IDS

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

position, motion, parallax:

position (J2000) RA: 20h 54min 48,583sec DEC: -58 27' 15,01'' 0,06 arcsec source: 15
proper motion (J2000) RA: 0,0021 arcsec/a DEC: -0,026 arcsec/a source: 25
radial velocity -5 km/s source: 25
galactic coord. (B1950) longitude: 338,16 latitude: -38,85
GCI unit vector (J2000) X: 0,361472 Y: -0,378227 Z: -0,852222

magnitude:

visual 3,65 (observed) source: 25
photovisual 3,7 source: 2

spectral information:

spectral class K0 source: 96
Morgan-Keenan K1II source: 25
B-magnitude 4,9 0,05 B-V-magnitude 1,25
U-magnitude 6,13 0,05 U-B-magnitude 1,23

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 17,3 arcsec
magnitude difference between brightest and second brightest component 8,9
position angle 104

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: 20h 50min 55,08sec DEC: -58 38' 40,2'' 0,01 arcsec
position (J2000) RA: 20h 54min 48,61sec DEC: -58 27' 14,98''
proper motion J1950 (FK4) RA: 0,0031 arcsec/a DEC: -0,022 arcsec/a 0,002 arcsec/a in RA
0,002 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0024 arcsec/a DEC: -0,025 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 3,7 (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: 785
Durchmusterung CP-58 7788
Boss General Catalogue 29133
Henry Draper Catalogue 198700

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

position and proper motion:

position (J2000) RA: 20h 54,8min DEC: -58 27'
proper motion (J2000) RA: 0,017 arcsec/a DEC: -0,026 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
- 1945 1 104 17,3'' 3,65 12,5 K1II B 2487

discoverer information:

discoverer code discoverer reference
B 2487 Bos, W.H. van den -

notes:

note Beta Ind.