a 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

catalogues and names a Tel, HR 6897, HD 169467, SAO 229023, FK5: 691
constellation Telescopium

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


position, motion, parallax:

position (J2000) RA: 18h 26min 58,4sec DEC: -45° 58' 6''
position (J1900) RA: 18h 19min 33,5sec DEC: -46° 1' 24''
proper motion (J2000) RA: -0,016 arcsec/a DEC: -0,054 arcsec/a
radial velocity 0 km/s
note: suspected variable radial velocity
rotational velocity 35 km/s (uncertain) (variable)

magnitude

visual magnitude 3,51
(V on UBV Johnson system)

spectral / color information

spectral class B3IV
B-V-magnitude -0,17
U-B-magnitude -0,64
R-I-magnitude -0,21

miscellaneous information

note (category: group membership): Member of Pleiades group.

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

position, motion, parallax:

position (J2000) RA: 18h 26min 58,421sec DEC: -45° 58' 6,42'' ±0,06 arcsec source: 15
proper motion (J2000) RA: -0,0015 arcsec/a DEC: -0,054 arcsec/a source: 25
radial velocity 0 km/s source: 25
galactic coord. (B1950) longitude: 348,67° latitude: -15,18°
GCI unit vector (J2000) X: 0,081615 Y: -0,690246 Z: -0,718957

magnitude:

visual 3,51 (observed) source: 25
photovisual 3,8 source: 2
photographic 3,6 source: 2

spectral information:

spectral class B3 source: 96
Morgan-Keenan B3IV source: 25
B-magnitude 3,34 ±0,05 B-V-magnitude -0,17
U-magnitude 2,7 ±0,05 U-B-magnitude -0,64

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: 18h 23min 15,974sec DEC: -45° 59' 53,12'' ±0,01 arcsec
position (J2000) RA: 18h 26min 58,432sec DEC: -45° 58' 5,88''
proper motion J1950 (FK4) RA: -0,0014 arcsec/a DEC: -0,046 arcsec/a ±0,003 arcsec/a in RA
±0,002 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0014 arcsec/a DEC: -0,048 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 3,8 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class B3
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 691
Durchmusterung CD-4612379
Boss General Catalogue 25154
Henry Draper Catalogue 169467