| Identification Data |
| Common Name | |
| Constellation | Hydra |
| Star Name | 19 Hya |
| Skymap Number | 9080139 |
| Henry Draper (HD) Number | 78556 |
| Harvard Revised (HR) Number | 3630 |
| SAO Number | 136604 |
| Durchmusterung (DM) Number | SD-08 2588 |
Washington Double Stars (WDS) Number
| 09087-0835
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 192059 |
| Right Ascension (RA) J2000 | 9h 8m 42.179s |
| Declination (Dec) J2000 | -8° 35' 22.286" |
| Position Uncertainty | 0.0111s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00143 |
| Proper Motion in Dec (J2000) | -0.004467 |
| Radial Velocity | +023.4km s-1 |
| Trigonometric Parallax | +0.00363s |
| Trigonometric Parallax Uncertainty | 0.00097s |
| GCI Unit Vector in X (J2000) | -0.725216 |
| GCI Unit Vector in Y (J2000) | 0.672128 |
| GCI Unit Vector in Z (J2000) | -0.149355 |
| Galactic Longitude | 238.30° |
Galactic Latitude
| 25.34°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.62 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.004 |
| Observed B Magnitude | 5.56 |
| Observed B-V Colour | -0.061 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.005 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 5.5 |
| Observed Photographic Magnitude | 5.5 |
| Morgan Keenan (MK) Spectral Type | B9.5III |
| One-Dimensional Spectral Class | B8 |
| Position Angle | 292 |
| Year of Observation | 1966. AD |
