| Identification Data |
| Common Name | |
| Constellation | Cassiopeia |
| Star Name | 1 Cas |
| Skymap Number | 23060081 |
| Henry Draper (HD) Number | 218376 |
| Harvard Revised (HR) Number | 8797 |
| SAO Number | 35147 |
| Durchmusterung (DM) Number | BD+58 2545 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 41489 |
| Right Ascension (RA) J2000 | 23h 6m 36.817s |
| Declination (Dec) J2000 | +59° 25' 11.136" |
| Position Uncertainty | 0.0063s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00089 |
| Proper Motion in Dec (J2000) | -0.002066 |
| Radial Velocity | -008.5km s-1 |
| Trigonometric Parallax | +0.00295s |
| Trigonometric Parallax Uncertainty | 0.00053s |
| GCI Unit Vector in X (J2000) | 0.495004 |
| GCI Unit Vector in Y (J2000) | -0.117439 |
| GCI Unit Vector in Z (J2000) | 0.860918 |
| Galactic Longitude | 109.95° |
Galactic Latitude
| -0.78°
|
| Observational Data |
| Observed Visual Magnitude (V) | 4.85 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
| Observed B Magnitude | 4.79 |
| Observed B-V Colour | -0.064 |
| 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 | 4.9 |
| Observed Photographic Magnitude | 4.7 |
| Morgan Keenan (MK) Spectral Type | B0.5IV |
| One-Dimensional Spectral Class | B1 |
| Position Angle | |
| Year of Observation | AD |
