Identification Data |
Common Name | |
Constellation | Hydra |
Star Name | 47 Hya |
Skymap Number | 13580063 |
Henry Draper (HD) Number | 121847 |
Harvard Revised (HR) Number | 5250 |
SAO Number | 182134 |
Durchmusterung (DM) Number | CD-2411202 |
Washington Double Stars (WDS) Number
|
|
Positional Data |
Position and Proper Motion (PPM) Number | 262325 |
Right Ascension (RA) J2000 | 13h 58m 31.146s |
Declination (Dec) J2000 | -24° 58' 20.095" |
Position Uncertainty | 0.0089s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00367 |
Proper Motion in Dec (J2000) | -0.029366 |
Radial Velocity | +005.0km s-1 |
Trigonometric Parallax | +0.00961s |
Trigonometric Parallax Uncertainty | 0.00069s |
GCI Unit Vector in X (J2000) | -0.787975 |
GCI Unit Vector in Y (J2000) | -0.448174 |
GCI Unit Vector in Z (J2000) | -0.422179 |
Galactic Longitude | 321.67° |
Galactic Latitude
| 35.45°
|
Observational Data |
Observed Visual Magnitude (V) | 5.21 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 5.12 |
Observed B-V Colour | -0.090 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.004 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 5.2 |
Observed Photographic Magnitude | 5.1 |
Morgan Keenan (MK) Spectral Type | B8Vp(shell) |
One-Dimensional Spectral Class | B8 |
Position Angle | |
Year of Observation | AD |