Identification Data |
Common Name | |
Constellation | Cygnus |
Star Name | 56 Cyg |
Skymap Number | 20500016 |
Henry Draper (HD) Number | 198639 |
Harvard Revised (HR) Number | 7984 |
SAO Number | 50121 |
Durchmusterung (DM) Number | BD+43 3739 |
Washington Double Stars (WDS) Number
| 20501+4404
|
Positional Data |
Position and Proper Motion (PPM) Number | 60544 |
Right Ascension (RA) J2000 | 20h 50m 4.931s |
Declination (Dec) J2000 | +44° 3' 33.494" |
Position Uncertainty | 0.0059s |
Proper Motion in RA (J2000)/cos(Dec) | +0.01138 |
Proper Motion in Dec (J2000) | +0.132366 |
Radial Velocity | -021.0km s-1 |
Trigonometric Parallax | +0.02367s |
Trigonometric Parallax Uncertainty | 0.00056s |
GCI Unit Vector in X (J2000) | 0.485683 |
GCI Unit Vector in Y (J2000) | -0.529648 |
GCI Unit Vector in Z (J2000) | 0.695403 |
Galactic Longitude | 84.29° |
Galactic Latitude
| 0.03°
|
Observational Data |
Observed Visual Magnitude (V) | 5.07 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
Observed B Magnitude | 5.28 |
Observed B-V Colour | +0.206 |
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 | |
Morgan Keenan (MK) Spectral Type | A4mDeltaDel |
One-Dimensional Spectral Class | A5 |
Position Angle | 46 |
Year of Observation | 1923. AD |