| Identification Data |
| Common Name | |
| Constellation | Cygnus |
| Star Name | 78mu 1Cyg |
| Skymap Number | 21440030 |
| Henry Draper (HD) Number | 206826 |
| Harvard Revised (HR) Number | 8309 |
| SAO Number | 89940 |
| Durchmusterung (DM) Number | BD+28 4169 |
Washington Double Stars (WDS) Number
| 21441+2845
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 400287 |
| Right Ascension (RA) J2000 | 21h 44m 8.577s |
| Declination (Dec) J2000 | +28° 44' 33.476" |
| Position Uncertainty | 0.0074s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.01979 |
| Proper Motion in Dec (J2000) | -0.242767 |
| Radial Velocity | +018.0km s-1 |
| Trigonometric Parallax | +0.04464s |
| Trigonometric Parallax Uncertainty | 0.00069s |
| GCI Unit Vector in X (J2000) | 0.727196 |
| GCI Unit Vector in Y (J2000) | -0.489840 |
| GCI Unit Vector in Z (J2000) | 0.480876 |
| Galactic Longitude | 80.59° |
Galactic Latitude
| -18.34°
|
| Observational Data |
| Observed Visual Magnitude (V) | 4.77 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.050 |
| Observed B Magnitude | 5.22 |
| Observed B-V Colour | +0.45 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.050 |
| Observed U Magnitude | 5.21 |
| Observed U-B Colour | -0.01 |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | 0.050 |
| Observed Photovisual Magnitude | 4.7 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | F6V |
| One-Dimensional Spectral Class | F5 |
| Position Angle | 305 |
| Year of Observation | 1994. AD |
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