| Identification Data |
| Common Name | |
| Constellation | Cygnus |
| Star Name | 27 Cyg |
| Skymap Number | 20060100 |
| Henry Draper (HD) Number | 191026 |
| Harvard Revised (HR) Number | 7689 |
| SAO Number | 69413 |
| Durchmusterung (DM) Number | BD+35 3959 |
Washington Double Stars (WDS) Number
| 20064+3558
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 84210 |
| Right Ascension (RA) J2000 | 20h 6m 21.767s |
| Declination (Dec) J2000 | +35° 58' 20.885" |
| Position Uncertainty | 0.0054s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.01849 |
| Proper Motion in Dec (J2000) | -0.440666 |
| Radial Velocity | -033.4km s-1 |
| Trigonometric Parallax | +0.04134s |
| Trigonometric Parallax Uncertainty | 0.00054s |
| GCI Unit Vector in X (J2000) | 0.423950 |
| GCI Unit Vector in Y (J2000) | -0.689371 |
| GCI Unit Vector in Z (J2000) | 0.587396 |
| Galactic Longitude | 72.86° |
Galactic Latitude
| 2.10°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.39 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
| Observed B Magnitude | 6.25 |
| Observed B-V Colour | +0.860 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.004 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 5.5 |
| Observed Photographic Magnitude | 6.5 |
| Morgan Keenan (MK) Spectral Type | G8.5IVa |
| One-Dimensional Spectral Class | K0 |
| Position Angle | 53 |
| Year of Observation | 1924. AD |
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