| Identification Data | 
| Common Name |  | 
| Constellation | Hydrus | 
| Star Name | eta2Hyi | 
| Skymap Number | 1540133 | 
| Henry Draper (HD) Number | 11977 | 
| Harvard Revised (HR) Number | 570 | 
| SAO Number | 248460 | 
| Durchmusterung (DM) Number | CP-68  101 | 
Washington Double Stars (WDS) Number
  | 
  | 
| Positional Data | 
| Position and Proper Motion (PPM) Number | 352648 | 
| Right Ascension (RA) J2000 | 1h 54m 56.131s | 
| Declination (Dec) J2000 | -67° 38' 50.292" | 
| Position Uncertainty | 0.0056s | 
| Proper Motion in RA (J2000)/cos(Dec) | +0.01332 | 
| Proper Motion in Dec (J2000) | +0.073266 | 
| Radial Velocity | -016.2km s-1 | 
| Trigonometric Parallax | +0.01504s | 
| Trigonometric Parallax Uncertainty | 0.00047s | 
| GCI Unit Vector in X (J2000) | 0.333477 | 
| GCI Unit Vector in Y (J2000) | 0.182830 | 
| GCI Unit Vector in Z (J2000) | -0.924860 | 
| Galactic Longitude | 293.92° | 
Galactic Latitude
  | -48.35°
  | 
| Observational Data | 
| Observed Visual Magnitude (V) | 4.69 | 
| Derived Visual Magnitude |  | 
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 | 
| Observed B Magnitude | 5.62 | 
| Observed B-V Colour | +0.931 | 
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.003 | 
| Observed U Magnitude |  | 
| Observed U-B Colour |  | 
| Observed U Magnitude or (U-B) Magnitude Uncertainty |  | 
| Observed Photovisual Magnitude | 4.7 | 
| Observed Photographic Magnitude |  | 
| Morgan Keenan (MK) Spectral Type | G8.5III | 
| One-Dimensional Spectral Class | K0 | 
| Position Angle |  | 
| Year of Observation |  AD |