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 |