| Identification Data |
| Common Name | Segin |
| Constellation | Cassiopeia |
| Star Name | 45eps Cas |
| Skymap Number | 1540056 |
| Henry Draper (HD) Number | 11415 |
| Harvard Revised (HR) Number | 542 |
| SAO Number | 12031 |
| Durchmusterung (DM) Number | BD+62 320 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 13322 |
| Right Ascension (RA) J2000 | 1h 54m 23.725s |
| Declination (Dec) J2000 | +63° 40' 12.365" |
| Position Uncertainty | 0.0054s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00481 |
| Proper Motion in Dec (J2000) | -0.018766 |
| Radial Velocity | -008.1km s-1 |
| Trigonometric Parallax | +0.00738s |
| Trigonometric Parallax Uncertainty | 0.00057s |
| GCI Unit Vector in X (J2000) | 0.389424 |
| GCI Unit Vector in Y (J2000) | 0.212311 |
| GCI Unit Vector in Z (J2000) | 0.896255 |
| Galactic Longitude | 129.85° |
Galactic Latitude
| 1.65°
|
| Observational Data |
| Observed Visual Magnitude (V) | 3.35 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
| Observed B Magnitude | 3.22 |
| Observed B-V Colour | -0.129 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.002 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 3.4 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | B3IV:p(shell) |
| One-Dimensional Spectral Class | B3 |
| Position Angle | |
| Year of Observation | AD |
