| Identification Data |
| Common Name | |
| Constellation | Hydra |
| Star Name | 18ome Hya |
| Skymap Number | 9050197 |
| Henry Draper (HD) Number | 77996 |
| Harvard Revised (HR) Number | 3613 |
| SAO Number | 117420 |
| Durchmusterung (DM) Number | BD+05 2116 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 155420 |
| Right Ascension (RA) J2000 | 9h 5m 58.366s |
| Declination (Dec) J2000 | +5° 5' 32.337" |
| Position Uncertainty | 0.0111s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00127 |
| Proper Motion in Dec (J2000) | -0.011066 |
| Radial Velocity | +024.5km s-1 |
| Trigonometric Parallax | +0.00269s |
| Trigonometric Parallax Uncertainty | 0.00093s |
| GCI Unit Vector in X (J2000) | -0.722430 |
| GCI Unit Vector in Y (J2000) | 0.685723 |
| GCI Unit Vector in Z (J2000) | 0.088761 |
| Galactic Longitude | 224.70° |
Galactic Latitude
| 32.11°
|
| Observational Data |
| Observed Visual Magnitude (V) | 4.99 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.004 |
| Observed B Magnitude | 6.22 |
| Observed B-V Colour | +1.226 |
| 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 | 5.4 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | K2II-III |
| One-Dimensional Spectral Class | K0 |
| Position Angle | |
| Year of Observation | AD |
