| Identification Data |
| Common Name | |
| Constellation | Cepheus |
| Star Name | 21zet Cep |
| Skymap Number | 22100159 |
| Henry Draper (HD) Number | 210745 |
| Harvard Revised (HR) Number | 8465 |
| SAO Number | 34137 |
| Durchmusterung (DM) Number | BD+57 2475 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 40311 |
| Right Ascension (RA) J2000 | 22h 10m 51.276s |
| Declination (Dec) J2000 | +58° 12' 4.539" |
| Position Uncertainty | 0.0052s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00169 |
| Proper Motion in Dec (J2000) | +0.004566 |
| Radial Velocity | -019.1km s-1 |
| Trigonometric Parallax | +0.00449s |
| Trigonometric Parallax Uncertainty | 0.00050s |
| GCI Unit Vector in X (J2000) | 0.468303 |
| GCI Unit Vector in Y (J2000) | -0.241568 |
| GCI Unit Vector in Z (J2000) | 0.849904 |
| Galactic Longitude | 103.07° |
Galactic Latitude
| 1.67°
|
| Observational Data |
| Observed Visual Magnitude (V) | 3.34 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
| Observed B Magnitude | 4.90 |
| Observed B-V Colour | +1.562 |
| 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 | 3.6 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | K1.5Ib |
| One-Dimensional Spectral Class | K0 |
| Position Angle | |
| Year of Observation | AD |
