| Identification Data |
| Common Name | |
| Constellation | Cygnus |
| Star Name | 40 Cyg |
| Skymap Number | 20270153 |
| Henry Draper (HD) Number | 195050 |
| Harvard Revised (HR) Number | 7826 |
| SAO Number | 70056 |
| Durchmusterung (DM) Number | BD+37 3941 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 84984 |
| Right Ascension (RA) J2000 | 20h 27m 34.257s |
| Declination (Dec) J2000 | +38° 26' 25.194" |
| Position Uncertainty | 0.0053s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00196 |
| Proper Motion in Dec (J2000) | -0.078666 |
| Radial Velocity | +000.4km s-1 |
| Trigonometric Parallax | +0.01207s |
| Trigonometric Parallax Uncertainty | 0.00053s |
| GCI Unit Vector in X (J2000) | 0.470203 |
| GCI Unit Vector in Y (J2000) | -0.626417 |
| GCI Unit Vector in Z (J2000) | 0.621699 |
| Galactic Longitude | 77.27° |
Galactic Latitude
| -0.02°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.64 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
| Observed B Magnitude | 5.71 |
| Observed B-V Colour | +0.068 |
| 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 | 5.4 |
| Morgan Keenan (MK) Spectral Type | A3V |
| One-Dimensional Spectral Class | A0 |
| Position Angle | |
| Year of Observation | AD |
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