| Identification Data |
| Common Name | |
| Constellation | Hydra |
| Star Name | 57 Hya |
| Skymap Number | 14470153 |
| Henry Draper (HD) Number | 130274 |
| Harvard Revised (HR) Number | 5517 |
| SAO Number | 182883 |
| Durchmusterung (DM) Number | CD-2610519 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 263410 |
| Right Ascension (RA) J2000 | 14h 47m 57.557s |
| Declination (Dec) J2000 | -26° 38' 46.157" |
| Position Uncertainty | 0.0096s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00079 |
| Proper Motion in Dec (J2000) | -0.008866 |
| Radial Velocity | +006.0km s-1 |
| Trigonometric Parallax | +0.00751s |
| Trigonometric Parallax Uncertainty | 0.00085s |
| GCI Unit Vector in X (J2000) | -0.664324 |
| GCI Unit Vector in Y (J2000) | -0.597946 |
| GCI Unit Vector in Z (J2000) | -0.448479 |
| Galactic Longitude | 332.89° |
Galactic Latitude
| 29.36°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.77 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
| Observed B Magnitude | 5.76 |
| Observed B-V Colour | -0.010 |
| 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 | 6.0 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | B9V |
| One-Dimensional Spectral Class | B9 |
| Position Angle | |
| Year of Observation | AD |
