Identification Data |
Common Name | |
Constellation | Hydrus |
Star Name | the Hyi |
Skymap Number | 3020039 |
Henry Draper (HD) Number | 19400 |
Harvard Revised (HR) Number | 939 |
SAO Number | 255945 |
Durchmusterung (DM) Number | CP-72 219 |
Washington Double Stars (WDS) Number
| 03023-7154
|
Positional Data |
Position and Proper Motion (PPM) Number | 367896 |
Right Ascension (RA) J2000 | 3h 2m 15.448s |
Declination (Dec) J2000 | -71° 54' 8.844" |
Position Uncertainty | 0.0063s |
Proper Motion in RA (J2000)/cos(Dec) | +0.00583 |
Proper Motion in Dec (J2000) | +0.015966 |
Radial Velocity | +011.8km s-1 |
Trigonometric Parallax | +0.00621s |
Trigonometric Parallax Uncertainty | 0.00050s |
GCI Unit Vector in X (J2000) | 0.217478 |
GCI Unit Vector in Y (J2000) | 0.221805 |
GCI Unit Vector in Z (J2000) | -0.950529 |
Galactic Longitude | 289.93° |
Galactic Latitude
| -41.76°
|
Observational Data |
Observed Visual Magnitude (V) | 5.51 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 5.38 |
Observed B-V Colour | -0.126 |
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 | 5.5 |
Observed Photographic Magnitude | 5.5 |
Morgan Keenan (MK) Spectral Type | B3V+A0IV |
One-Dimensional Spectral Class | B8 |
Position Angle | 179 |
Year of Observation | 1961. AD |