| Identification Data |
| Common Name | |
| Constellation | Hydra |
| Star Name | 4del Hya |
| Skymap Number | 8370150 |
| Henry Draper (HD) Number | 73262 |
| Harvard Revised (HR) Number | 3410 |
| SAO Number | 116965 |
| Durchmusterung (DM) Number | BD+06 2001 |
Washington Double Stars (WDS) Number
| 08377+0542
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 154763 |
| Right Ascension (RA) J2000 | 8h 37m 39.366s |
| Declination (Dec) J2000 | +5° 42' 13.614" |
| Position Uncertainty | 0.0096s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00471 |
| Proper Motion in Dec (J2000) | -0.007066 |
| Radial Velocity | +011.3km s-1 |
| Trigonometric Parallax | +0.01821s |
| Trigonometric Parallax Uncertainty | 0.00088s |
| GCI Unit Vector in X (J2000) | -0.631776 |
| GCI Unit Vector in Y (J2000) | 0.768753 |
| GCI Unit Vector in Z (J2000) | 0.099385 |
| Galactic Longitude | 220.26° |
Galactic Latitude
| 26.18°
|
| Observational Data |
| Observed Visual Magnitude (V) | 4.14 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
| Observed B Magnitude | 4.16 |
| Observed B-V Colour | +0.019 |
| 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 | 4.2 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | A1Vnn |
| One-Dimensional Spectral Class | A0 |
| Position Angle | 312 |
| Year of Observation | 1909. AD |
Printer Version