| Identification Data |
| Common Name | |
| Constellation | Draco |
| Star Name | 21mu Dra |
| Skymap Number | 17050176 |
| Henry Draper (HD) Number | 154905 |
| Harvard Revised (HR) Number | 6369 |
| SAO Number | 30239 |
| Durchmusterung (DM) Number | BD+54 1857 |
Washington Double Stars (WDS) Number
| 17053+5428
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 35805 |
| Right Ascension (RA) J2000 | 17h 5m 20.203s |
| Declination (Dec) J2000 | +54° 28' 14.312" |
| Position Uncertainty | 0.0182s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.01190 |
| Proper Motion in Dec (J2000) | +0.107467 |
| Radial Velocity | -014.3km s-1 |
| Trigonometric Parallax | +0.03708s |
| Trigonometric Parallax Uncertainty | 0.00089s |
| GCI Unit Vector in X (J2000) | -0.137295 |
| GCI Unit Vector in Y (J2000) | -0.564669 |
| GCI Unit Vector in Z (J2000) | 0.813818 |
| Galactic Longitude | 82.30° |
Galactic Latitude
| 37.02°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.63 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.010 |
| Observed B Magnitude | 6.13 |
| Observed B-V Colour | +0.498 |
| 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 | F5 |
| Position Angle | 29 |
| Year of Observation | 1993. AD |
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