| Identification Data |
| Common Name | |
| Constellation | Hydrus |
| Star Name | bet Hyi |
| Skymap Number | 250030 |
| Henry Draper (HD) Number | 2151 |
| Harvard Revised (HR) Number | 98 |
| SAO Number | 255670 |
| Durchmusterung (DM) Number | CP-77 16 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 366918 |
| Right Ascension (RA) J2000 | 0h 25m 45.071s |
| Declination (Dec) J2000 | -77° 15' 15.284" |
| Position Uncertainty | 0.0060s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.67078 |
| Proper Motion in Dec (J2000) | +0.325366 |
| Radial Velocity | +022.9km s-1 |
| Trigonometric Parallax | +0.13378s |
| Trigonometric Parallax Uncertainty | 0.00051s |
| GCI Unit Vector in X (J2000) | 0.219234 |
| GCI Unit Vector in Y (J2000) | 0.024737 |
| GCI Unit Vector in Z (J2000) | -0.975359 |
| Galactic Longitude | 304.81° |
Galactic Latitude
| -39.77°
|
| Observational Data |
| Observed Visual Magnitude (V) | 2.82 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | |
| Observed B Magnitude | 3.44 |
| Observed B-V Colour | +0.618 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.008 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 2.9 |
| Observed Photographic Magnitude | 3.5 |
| Morgan Keenan (MK) Spectral Type | G1IV |
| One-Dimensional Spectral Class | G0 |
| Position Angle | |
| Year of Observation | AD |
