Identification Data |
Common Name | Thuban |
Constellation | Draco |
Star Name | 11alp Dra |
Skymap Number | 14040058 |
Henry Draper (HD) Number | 123299 |
Harvard Revised (HR) Number | 5291 |
SAO Number | 16273 |
Durchmusterung (DM) Number | BD+65 978 |
Washington Double Stars (WDS) Number
|
|
Positional Data |
Position and Proper Motion (PPM) Number | 18861 |
Right Ascension (RA) J2000 | 14h 4m 23.349s |
Declination (Dec) J2000 | +64° 22' 33.062" |
Position Uncertainty | 0.0062s |
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 Uncertainty | 0.00052s |
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 Longitude | 110.52° |
Galactic Latitude
| 50.96°
|
Observational Data |
Observed Visual Magnitude (V) | 3.65 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
Observed B Magnitude | 3.62 |
Observed B-V Colour | -0.032 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.002 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 3.6 |
Observed Photographic Magnitude | |
Morgan Keenan (MK) Spectral Type | A0III |
One-Dimensional Spectral Class | A0 |
Position Angle | |
Year of Observation | AD |