Identification Data |
Common Name | |
Constellation | Draco |
Star Name | 46 Dra |
Skymap Number | 18420147 |
Henry Draper (HD) Number | 173524 |
Harvard Revised (HR) Number | 7049 |
SAO Number | 31119 |
Durchmusterung (DM) Number | BD+55 2107 |
Washington Double Stars (WDS) Number
| 18426+5532
|
Positional Data |
Position and Proper Motion (PPM) Number | 36781 |
Right Ascension (RA) J2000 | 18h 42m 37.953s |
Declination (Dec) J2000 | +55° 32' 22.046" |
Position Uncertainty | 0.0068s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00031 |
Proper Motion in Dec (J2000) | +0.023466 |
Radial Velocity | -030.0km s-1 |
Trigonometric Parallax | +0.00896s |
Trigonometric Parallax Uncertainty | 0.00048s |
GCI Unit Vector in X (J2000) | 0.104651 |
GCI Unit Vector in Y (J2000) | -0.556077 |
GCI Unit Vector in Z (J2000) | 0.824516 |
Galactic Longitude | 84.94° |
Galactic Latitude
| 23.29°
|
Observational Data |
Observed Visual Magnitude (V) | 5.03 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 4.96 |
Observed B-V Colour | -0.073 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.003 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 5.1 |
Observed Photographic Magnitude | 5.1 |
Morgan Keenan (MK) Spectral Type | B9.5pHg: |
One-Dimensional Spectral Class | A0 |
Position Angle | 135 |
Year of Observation | 1987. AD |