| 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 |
