| Identification Data |
| Common Name | |
| Constellation | Perseus |
| Star Name | 45eps Per |
| Skymap Number | 3570109 |
| Henry Draper (HD) Number | 24760 |
| Harvard Revised (HR) Number | 1220 |
| SAO Number | 56840 |
| Durchmusterung (DM) Number | BD+39 895 |
Washington Double Stars (WDS) Number
| 03578+4000
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 46661 |
| Right Ascension (RA) J2000 | 3h 57m 51.230s |
| Declination (Dec) J2000 | +40° 0' 36.773" |
| Position Uncertainty | 0.0088s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00110 |
| Proper Motion in Dec (J2000) | -0.024166 |
| Radial Velocity | +000.8km s-1 |
| Trigonometric Parallax | +0.00606s |
| Trigonometric Parallax Uncertainty | 0.00082s |
| GCI Unit Vector in X (J2000) | 0.389160 |
| GCI Unit Vector in Y (J2000) | 0.659699 |
| GCI Unit Vector in Z (J2000) | 0.642924 |
| Galactic Longitude | 157.36° |
Galactic Latitude
| -10.09°
|
| Observational Data |
| Observed Visual Magnitude (V) | 2.91 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
| Observed B Magnitude | 2.74 |
| Observed B-V Colour | -0.174 |
| 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 | 3.0 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | B0.5V+A2V |
| One-Dimensional Spectral Class | B1 |
| Position Angle | 10 |
| Year of Observation | 1938. AD |
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