| Identification Data |
| Common Name | Alderamin |
| Constellation | Cepheus |
| Star Name | 5alp Cep |
| Skymap Number | 21180124 |
| Henry Draper (HD) Number | 203280 |
| Harvard Revised (HR) Number | 8162 |
| SAO Number | 19302 |
| Durchmusterung (DM) Number | BD+61 2111 |
Washington Double Stars (WDS) Number
| 21186+6235
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 22755 |
| Right Ascension (RA) J2000 | 21h 18m 34.771s |
| Declination (Dec) J2000 | +62° 35' 8.061" |
| Position Uncertainty | 0.0059s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.02171 |
| Proper Motion in Dec (J2000) | +0.048366 |
| Radial Velocity | -011.5km s-1 |
| Trigonometric Parallax | +0.06684s |
| Trigonometric Parallax Uncertainty | 0.00049s |
| GCI Unit Vector in X (J2000) | 0.350864 |
| GCI Unit Vector in Y (J2000) | -0.298135 |
| GCI Unit Vector in Z (J2000) | 0.887699 |
| Galactic Longitude | 101.00° |
Galactic Latitude
| 9.17°
|
| Observational Data |
| Observed Visual Magnitude (V) | 2.47 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
| Observed B Magnitude | 2.72 |
| Observed B-V Colour | +0.249 |
| 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 | 2.6 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | A7V |
| One-Dimensional Spectral Class | A5 |
| Position Angle | 22 |
| Year of Observation | 1907. AD |
