e Telescopii

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 e Tel, HR 6783, HD 166063, SAO 228777, FK5: 1473, WDS 18112-4557
constellation Telescopium

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


position, motion, parallax:

position (J2000) RA: 18h 11min 13,8sec DEC: -45° 57' 16''
position (J1900) RA: 18h 3min 48,4sec DEC: -45° 58' 18''
proper motion (J2000) RA: -0,017 arcsec/a DEC: -0,037 arcsec/a
radial velocity -26 km/s
trigonometric parallax 0,023 arcsec

magnitude

visual magnitude 4,53
(V on UBV Johnson system)

spectral / color information

spectral class K0III
B-V-magnitude 1,01
U-B-magnitude 0,78
R-I-magnitude 0,48

double/multiple star system information

separation 21,2 arcsec
mag difference (of double or brightest multiple) 8,4
note Worley (1978) update of the IDS

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

position, motion, parallax:

position (J2000) RA: 18h 11min 13,766sec DEC: -45° 57' 15,82'' ±0,06 arcsec source: 15
proper motion (J2000) RA: -0,0016 arcsec/a DEC: -0,037 arcsec/a source: 25
radial velocity -26 km/s source: 25
trigonometric parallax 0,023 ±0,002 arcsec source: 25
galactic coord. (B1950) longitude: 347,5° latitude: -12,69°
GCI unit vector (J2000) X: 0,034051 Y: -0,694396 Z: -0,718787

magnitude:

visual 4,53 (observed) source: 25
photovisual 4,6 source: 2

spectral information:

spectral class K0 source: 96
Morgan-Keenan K0III source: 25
B-magnitude 5,54 ±0,05 B-V-magnitude 1,01
U-magnitude 6,32 ±0,05 U-B-magnitude 0,78

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 21,2 arcsec
magnitude difference between brightest and second brightest component 8
position angle 228 °

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 7min 31,023sec DEC: -45° 57' 54,78'' ±0,01 arcsec
position (J2000) RA: 18h 11min 13,78sec DEC: -45° 57' 15,44''
proper motion J1950 (FK4) RA: -0,0014 arcsec/a DEC: -0,031 arcsec/a ±0,002 arcsec/a in RA
±0,002 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0015 arcsec/a DEC: -0,033 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 4,6 (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: 1473
Durchmusterung CD-4512251
Boss General Catalogue 24767
Henry Draper Catalogue 166063

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

position and proper motion:

position (J2000) RA: 18h 11,2min DEC: -45° 57'
proper motion (J2000) RA: -0,017 arcsec/a DEC: -0,037 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
- 1897 1 228° 21,2'' 4,53 13 K0III HDO 286

discoverer information:

discoverer code discoverer reference
HDO 286 - -

notes:

note Epsilon Tel.