| Identification Data |
| Common Name | |
| Constellation | Hydra |
| Star Name | 51 Hya |
| Skymap Number | 14230019 |
| Henry Draper (HD) Number | 125932 |
| Harvard Revised (HR) Number | 5381 |
| SAO Number | 182483 |
| Durchmusterung (DM) Number | CD-27 9803 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 262841 |
| Right Ascension (RA) J2000 | 14h 23m 5.774s |
| Declination (Dec) J2000 | -27° 45' 14.463" |
| Position Uncertainty | 0.0082s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.01519 |
| Proper Motion in Dec (J2000) | -0.116666 |
| Radial Velocity | +020.4km s-1 |
| Trigonometric Parallax | +0.01867s |
| Trigonometric Parallax Uncertainty | 0.00076s |
| GCI Unit Vector in X (J2000) | -0.717989 |
| GCI Unit Vector in Y (J2000) | -0.517336 |
| GCI Unit Vector in Z (J2000) | -0.465677 |
| Galactic Longitude | 326.61° |
Galactic Latitude
| 30.87°
|
| Observational Data |
| Observed Visual Magnitude (V) | 4.79 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
| Observed B Magnitude | 6.11 |
| Observed B-V Colour | +1.317 |
| 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 | |
| Morgan Keenan (MK) Spectral Type | K4III |
| One-Dimensional Spectral Class | K2 |
| Position Angle | |
| Year of Observation | AD |
