Identification Data |
Common Name | |
Constellation | Hydrus |
Star Name | eps Hyi |
Skymap Number | 2390084 |
Henry Draper (HD) Number | 16978 |
Harvard Revised (HR) Number | 806 |
SAO Number | 248621 |
Durchmusterung (DM) Number | CP-68 161 |
Washington Double Stars (WDS) Number
|
|
Positional Data |
Position and Proper Motion (PPM) Number | 353052 |
Right Ascension (RA) J2000 | 2h 39m 35.361s |
Declination (Dec) J2000 | -68° 16' 1.006" |
Position Uncertainty | 0.0057s |
Proper Motion in RA (J2000)/cos(Dec) | +0.01574 |
Proper Motion in Dec (J2000) | +0.000666 |
Radial Velocity | +006.0km s-1 |
Trigonometric Parallax | +0.02127s |
Trigonometric Parallax Uncertainty | 0.00050s |
GCI Unit Vector in X (J2000) | 0.284079 |
GCI Unit Vector in Y (J2000) | 0.237505 |
GCI Unit Vector in Z (J2000) | -0.928919 |
Galactic Longitude | 288.95° |
Galactic Latitude
| -45.82°
|
Observational Data |
Observed Visual Magnitude (V) | 4.11 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
Observed B Magnitude | 4.06 |
Observed B-V Colour | -0.049 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.002 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 4.3 |
Observed Photographic Magnitude | 4.2 |
Morgan Keenan (MK) Spectral Type | B9V |
One-Dimensional Spectral Class | B9 |
Position Angle | |
Year of Observation | AD |