| Identification Data |
| Common Name | |
| Constellation | Taurus |
| Star Name | 121 Tau |
| Skymap Number | 5350119 |
| Henry Draper (HD) Number | 36819 |
| Harvard Revised (HR) Number | 1875 |
| SAO Number | 77285 |
| Durchmusterung (DM) Number | BD+23 954 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 94529 |
| Right Ascension (RA) J2000 | 5h 35m 27.130s |
| Declination (Dec) J2000 | +24° 2' 22.520" |
| Position Uncertainty | 0.0101s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00109 |
| Proper Motion in Dec (J2000) | -0.020266 |
| Radial Velocity | +020.4km s-1 |
| Trigonometric Parallax | +0.00544s |
| Trigonometric Parallax Uncertainty | 0.00090s |
| GCI Unit Vector in X (J2000) | 0.097633 |
| GCI Unit Vector in Y (J2000) | 0.908030 |
| GCI Unit Vector in Z (J2000) | 0.407368 |
| Galactic Longitude | 182.96° |
Galactic Latitude
| -4.52°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.38 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
| Observed B Magnitude | 5.29 |
| Observed B-V Colour | -0.095 |
| 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 | 5.3 |
| Observed Photographic Magnitude | 5.1 |
| Morgan Keenan (MK) Spectral Type | B2.5IV |
| One-Dimensional Spectral Class | B3 |
| Position Angle | |
| Year of Observation | AD |
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