e Scorpii

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 e Sco, NSV 07983, 26 Sco, HR 6241, HD 151680, SAO 208078, FK5: 628
constellation Scorpius

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


position, motion, parallax:

position (J2000) RA: 16h 50min 9,8sec DEC: -34° 17' 36''
position (J1900) RA: 16h 43min 41,1sec DEC: -34° 6' 42''
proper motion (J2000) RA: -0,611 arcsec/a DEC: -0,255 arcsec/a
radial velocity -3 km/s
trigonometric parallax 0,022 arcsec

magnitude

visual magnitude 2,29
(V on UBV Johnson system)

spectral / color information

spectral class K2.5III
B-V-magnitude 1,15
U-B-magnitude 1,27
R-I-magnitude 0,6

variability information

variable star identification 7983

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

position, motion, parallax:

position (J2000) RA: 16h 50min 9,82sec DEC: -34° 17' 35,72'' ±0,06 arcsec source: 15
proper motion (J2000) RA: -0,0493 arcsec/a DEC: -0,255 arcsec/a source: 25
radial velocity -3 km/s source: 25
trigonometric parallax 0,022 ±0,002 arcsec source: 25
galactic coord. (B1950) longitude: 348,82° latitude: 6,56°
GCI unit vector (J2000) X: -0,24787 Y: -0,788104 Z: -0,563429

magnitude:

visual 2,29 (observed) source: 25
photovisual 2,4 source: 2
photographic 3,4 source: 2

spectral information:

spectral class K0 source: 96
Morgan-Keenan K2.5III source: 25
B-magnitude 3,44 ±0,05 B-V-magnitude 1,15
U-magnitude 4,71 ±0,05 U-B-magnitude 1,27

variability information:

source of data: 28
variability type 9
var. amplitude 0,11

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: 16h 46min 55,206sec DEC: -34° 12' 15,56'' ±0,008 arcsec
position (J2000) RA: 16h 50min 9,826sec DEC: -34° 17' 35,82''
proper motion J1950 (FK4) RA: -0,0492 arcsec/a DEC: -0,255 arcsec/a ±0,002 arcsec/a in RA
±0,002 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0492 arcsec/a DEC: -0,257 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 2,4 (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: 628
Durchmusterung CD-3411285
Boss General Catalogue 22640
Henry Draper Catalogue 151680

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

position:

position (J1950) RA: 16h 46min 55,2sec DEC: -34° 12' 16''

variability informations:

magnitute at max. brightness 2,24
magnitute at min. brightness 2,35
photometric system visual, photovisual or Johnson's V

spectral information

spectral class K2

references

to a study 011752D (designation: -34 11285)