| Identification Data |
| Common Name | |
| Constellation | Perseus |
| Star Name | 20 Per |
| Skymap Number | 2530081 |
| Henry Draper (HD) Number | 17904 |
| Harvard Revised (HR) Number | 855 |
| SAO Number | 55975 |
| Durchmusterung (DM) Number | BD+37 655 |
Washington Double Stars (WDS) Number
| 02537+3820
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 67877 |
| Right Ascension (RA) J2000 | 2h 53m 42.617s |
| Declination (Dec) J2000 | +38° 20' 14.975" |
| Position Uncertainty | 0.0120s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00405 |
| Proper Motion in Dec (J2000) | -0.078567 |
| Radial Velocity | +005.8km s-1 |
| Trigonometric Parallax | +0.01387s |
| Trigonometric Parallax Uncertainty | 0.00086s |
| GCI Unit Vector in X (J2000) | 0.569644 |
| GCI Unit Vector in Y (J2000) | 0.539205 |
| GCI Unit Vector in Z (J2000) | 0.620292 |
| Galactic Longitude | 147.82° |
Galactic Latitude
| -18.55°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.35 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.004 |
| Observed B Magnitude | 5.76 |
| Observed B-V Colour | +0.406 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.006 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 5.3 |
| Observed Photographic Magnitude | 5.6 |
| Morgan Keenan (MK) Spectral Type | F4IV |
| One-Dimensional Spectral Class | F0 |
| Position Angle | |
| Year of Observation | 1993. AD |
