| Identification Data |
| Common Name | Hadar |
| Constellation | Centaurus |
| Star Name | bet Cen |
| Skymap Number | 14030110 |
| Henry Draper (HD) Number | 122451 |
| Harvard Revised (HR) Number | 5267 |
| SAO Number | 252582 |
| Durchmusterung (DM) Number | CP-59 5365 |
Washington Double Stars (WDS) Number
| 14038-6022
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 360515 |
| Right Ascension (RA) J2000 | 14h 3m 49.404s |
| Declination (Dec) J2000 | -60° 22' 22.942" |
| Position Uncertainty | 0.0060s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00458 |
| Proper Motion in Dec (J2000) | -0.025167 |
| Radial Velocity | +005.9km s-1 |
| Trigonometric Parallax | +0.00621s |
| Trigonometric Parallax Uncertainty | 0.00056s |
| GCI Unit Vector in X (J2000) | -0.423938 |
| GCI Unit Vector in Y (J2000) | -0.254283 |
| GCI Unit Vector in Z (J2000) | -0.869262 |
| Galactic Longitude | 311.77° |
Galactic Latitude
| 1.25°
|
| Observational Data |
| Observed Visual Magnitude (V) | 0.64 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.013 |
| Observed B Magnitude | 0.49 |
| Observed B-V Colour | -0.153 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.017 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | .9 |
| Observed Photographic Magnitude | .6 |
| Morgan Keenan (MK) Spectral Type | B1III |
| One-Dimensional Spectral Class | B1 |
| Position Angle | 251 |
| Year of Observation | 1960. AD |
