Astronomy
Constellations - Draco - 11alp Dra (Thuban)

 
Identification Data
Common NameThuban
ConstellationDraco
Star Name11alp Dra
Skymap Number14040058
Henry Draper (HD) Number123299
Harvard Revised (HR) Number5291
SAO Number16273
Durchmusterung (DM) NumberBD+65 978
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number18861
Right Ascension (RA) J200014h 4m 23.349s
Declination (Dec) J2000+64° 22' 33.062"
Position Uncertainty0.0062s
Proper Motion in RA (J2000)/cos(Dec)-0.00871
Proper Motion in Dec (J2000)+0.017266
Radial Velocity-013.0km s-1
Trigonometric Parallax+0.01056s
Trigonometric Parallax Uncertainty0.00052s
GCI Unit Vector in X (J2000)-0.370317
GCI Unit Vector in Y (J2000)-0.223366
GCI Unit Vector in Z (J2000)0.901650
Galactic Longitude110.52°
Galactic Latitude
50.96°
Observational Data
Observed Visual Magnitude (V)3.65
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude3.62
Observed B-V Colour-0.032
Observed B Magnitude or (B-V) Magnitude Uncertainty0.002
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude3.6
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeA0III
One-Dimensional Spectral ClassA0
Position Angle
Year of Observation AD

Data Source
SKY2000 - Master Star Catalog - Star Catalog Database, Version 2
    Sande C.B., Warren Jr. W.H., Tracewell D.A., Home A.T., Miller A.C.
    (Goddard Space Flight Center, Flight Dynamics Division (1998))

 
Page compiled: Sun Sep 02 13:15:39 GMT+01:00 2001