Zuben Elschemali


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. Combined General Catalogue of Variable Stars (suspected variables)


catalogues and names Zuben Elschemali, b Lib, NSV 07009, 27 Lib, HR 5685, HD 135742, SAO 140430, FK5: 564
other names Zuben Eschamali, Zuben el Chamali, Zubenesch, Zubenelg, Kiffa Borealis
constellation Libra

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

note (category: star names): Zuben Elschemali; Zuben Eschamali; Zuben el Chamali; Zubenesch; Zubenelg; Kiffa Borealis.

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

position, motion, parallax:

position (J2000) RA: 15h 17min 0,4sec DEC: -9 22' 59''
position (J1900) RA: 15h 11min 37,4sec DEC: -9 0' 50''
proper motion (J2000) RA: -0,096 arcsec/a DEC: -0,019 arcsec/a
radial velocity -35 km/s
note: spectroscopic binaries
rotational velocity 230 km/s (uncertain) (variable)
trigonometric parallax -0,003 arcsec

magnitude

visual magnitude 2,61
(V on UBV Johnson system)

spectral / color information

spectral class B8V
B-V-magnitude -0,11
U-B-magnitude -0,36
R-I-magnitude -0,1
note (category: spectra): C1 neutral carbon continuum shows discontinuities in UV.
note (category: colors): Color excess E(B-V) = -0.02.

variability information

variable star identification 7009
note (category: variability): Described by Eratosthenes (ca. 200 B.C.) as brighter than Antares, by Ptolemy (ca. 150 A.D.) as equal to Antares.

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

position, motion, parallax:

position (J2000) RA: 15h 17min 0,421sec DEC: -9 22' 58,54'' 0,06 arcsec source: 15
proper motion (J2000) RA: -0,0065 arcsec/a DEC: -0,019 arcsec/a source: 25
radial velocity -35 km/s source: 25
galactic coord. (B1950) longitude: 352,03 latitude: 39,23
GCI unit vector (J2000) X: -0,644003 Y: -0,747449 Z: -0,163032

magnitude:

visual 2,61 (observed) source: 25
photovisual 2,7 source: 2
photographic 2,7 source: 2

spectral information:

spectral class B8 source: 96
Morgan-Keenan B8V source: 25
B-magnitude 2,5 0,05 B-V-magnitude -0,11
U-magnitude 2,14 0,05 U-B-magnitude -0,36

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: 15h 14min 18,732sec DEC: -9 11' 58,93'' 0,003 arcsec
position (J2000) RA: 15h 17min 0,43sec DEC: -9 22' 58,53''
proper motion J1950 (FK4) RA: -0,0066 arcsec/a DEC: -0,023 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0064 arcsec/a DEC: -0,019 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 2,7 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class B8
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 564
Durchmusterung BD-08 3935
Boss General Catalogue 20539
Henry Draper Catalogue 135742

data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)

position:

position (J1950) RA: 15h 14min 18,7sec DEC: -9 11' 59''

variability informations:

magnitute at max. brightness 2,6
magnitute at min. brightness 2,63
photometric system visual, photovisual or Johnson's V

spectral information

spectral class B8

references

to a study 731201D (designation: HD 135742)