| Identification Data |
| Common Name | |
| Constellation | Hydra |
| Star Name | 2 Hya |
| Skymap Number | 8260087 |
| Henry Draper (HD) Number | 71297 |
| Harvard Revised (HR) Number | 3321 |
| SAO Number | 135916 |
| Durchmusterung (DM) Number | SD-03 2345 |
Washington Double Stars (WDS) Number
| 08265-0359
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 191345 |
| Right Ascension (RA) J2000 | 8h 26m 27.208s |
| Declination (Dec) J2000 | -3° 59' 14.925" |
| Position Uncertainty | 0.0094s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00229 |
| Proper Motion in Dec (J2000) | -0.073866 |
| Radial Velocity | +027.3km s-1 |
| Trigonometric Parallax | +0.01883s |
| Trigonometric Parallax Uncertainty | 0.00080s |
| GCI Unit Vector in X (J2000) | -0.594968 |
| GCI Unit Vector in Y (J2000) | 0.800735 |
| GCI Unit Vector in Z (J2000) | -0.069538 |
| Galactic Longitude | 227.97° |
Galactic Latitude
| 19.02°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.59 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.004 |
| Observed B Magnitude | 5.81 |
| Observed B-V Colour | +0.224 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.006 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 5.7 |
| Observed Photographic Magnitude | 5.6 |
| Morgan Keenan (MK) Spectral Type | A5III-IV |
| One-Dimensional Spectral Class | A5 |
| Position Angle | 4 |
| Year of Observation | 1977. AD |
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