| Identification Data |
| Common Name | |
| Constellation | Cygnus |
| Star Name | 39 Cyg |
| Skymap Number | 20230172 |
| Henry Draper (HD) Number | 194317 |
| Harvard Revised (HR) Number | 7806 |
| SAO Number | 69950 |
| Durchmusterung (DM) Number | BD+31 4062 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 84863 |
| Right Ascension (RA) J2000 | 20h 23m 51.620s |
| Declination (Dec) J2000 | +32° 11' 24.619" |
| Position Uncertainty | 0.0054s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00281 |
| Proper Motion in Dec (J2000) | -0.005866 |
| Radial Velocity | -014.6km s-1 |
| Trigonometric Parallax | +0.01277s |
| Trigonometric Parallax Uncertainty | 0.00062s |
| GCI Unit Vector in X (J2000) | 0.497016 |
| GCI Unit Vector in Y (J2000) | -0.684962 |
| GCI Unit Vector in Z (J2000) | 0.532731 |
| Galactic Longitude | 71.72° |
Galactic Latitude
| -3.02°
|
| Observational Data |
| Observed Visual Magnitude (V) | 4.43 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
| Observed B Magnitude | 5.77 |
| Observed B-V Colour | +1.337 |
| 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 | 4.6 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | K2.5IIIFe-0.5 |
| One-Dimensional Spectral Class | K2 |
| Position Angle | |
| Year of Observation | AD |
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