| Identification Data |
| Common Name | Merope |
| Constellation | Taurus |
| Star Name | 23 Tau |
| Skymap Number | 3460042 |
| Henry Draper (HD) Number | 23480 |
| Harvard Revised (HR) Number | 1156 |
| SAO Number | 76172 |
| Durchmusterung (DM) Number | BD+23 522 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 92859 |
| Right Ascension (RA) J2000 | 3h 46m 19.573s |
| Declination (Dec) J2000 | +23° 56' 54.090" |
| Position Uncertainty | 0.0094s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00154 |
| Proper Motion in Dec (J2000) | -0.042766 |
| Radial Velocity | +006.2km s-1 |
| Trigonometric Parallax | +0.00908s |
| Trigonometric Parallax Uncertainty | 0.00104s |
| GCI Unit Vector in X (J2000) | 0.503336 |
| GCI Unit Vector in Y (J2000) | 0.762815 |
| GCI Unit Vector in Z (J2000) | 0.405913 |
| Galactic Longitude | 166.57° |
Galactic Latitude
| -23.75°
|
| Observational Data |
| Observed Visual Magnitude (V) | 4.17 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
| Observed B Magnitude | 4.12 |
| Observed B-V Colour | -0.054 |
| 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 | 4.3 |
| Observed Photographic Magnitude | 4.1 |
| Morgan Keenan (MK) Spectral Type | B6IVe |
| One-Dimensional Spectral Class | B5 |
| Position Angle | |
| Year of Observation | AD |
