Identification Data |
Common Name | Arrakis |
Constellation | Draco |
Star Name | 21mu Dra |
Skymap Number | 17050064 |
Henry Draper (HD) Number | 154906 |
Harvard Revised (HR) Number | 6370 |
SAO Number | 30239 |
Durchmusterung (DM) Number | BD+54 1857 |
Washington Double Stars (WDS) Number
| 17053+5428
|
Positional Data |
Position and Proper Motion (PPM) Number | |
Right Ascension (RA) J2000 | 17h 5m 20.116s |
Declination (Dec) J2000 | +54° 28' 12.153" |
Position Uncertainty | 0.0125s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00757 |
Proper Motion in Dec (J2000) | +0.073967 |
Radial Velocity | -014.3km s-1 |
Trigonometric Parallax | +0.03708s |
Trigonometric Parallax Uncertainty | 0.00089s |
GCI Unit Vector in X (J2000) | -0.137300 |
GCI Unit Vector in Y (J2000) | -0.564676 |
GCI Unit Vector in Z (J2000) | 0.813812 |
Galactic Longitude | 82.30° |
Galactic Latitude
| 37.02°
|
Observational Data |
Observed Visual Magnitude (V) | 5.55 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.011 |
Observed B Magnitude | 6.03 |
Observed B-V Colour | +0.483 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.014 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 5.8 |
Observed Photographic Magnitude | 6.2 |
Morgan Keenan (MK) Spectral Type | F7V |
One-Dimensional Spectral Class | |
Position Angle | 29 |
Year of Observation | 1993. AD |