Identification Data |
Common Name | |
Constellation | Hydra |
Star Name | 57 Hya |
Skymap Number | 14470153 |
Henry Draper (HD) Number | 130274 |
Harvard Revised (HR) Number | 5517 |
SAO Number | 182883 |
Durchmusterung (DM) Number | CD-2610519 |
Washington Double Stars (WDS) Number
|
|
Positional Data |
Position and Proper Motion (PPM) Number | 263410 |
Right Ascension (RA) J2000 | 14h 47m 57.557s |
Declination (Dec) J2000 | -26° 38' 46.157" |
Position Uncertainty | 0.0096s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00079 |
Proper Motion in Dec (J2000) | -0.008866 |
Radial Velocity | +006.0km s-1 |
Trigonometric Parallax | +0.00751s |
Trigonometric Parallax Uncertainty | 0.00085s |
GCI Unit Vector in X (J2000) | -0.664324 |
GCI Unit Vector in Y (J2000) | -0.597946 |
GCI Unit Vector in Z (J2000) | -0.448479 |
Galactic Longitude | 332.89° |
Galactic Latitude
| 29.36°
|
Observational Data |
Observed Visual Magnitude (V) | 5.77 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 5.76 |
Observed B-V Colour | -0.010 |
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 | 6.0 |
Observed Photographic Magnitude | |
Morgan Keenan (MK) Spectral Type | B9V |
One-Dimensional Spectral Class | B9 |
Position Angle | |
Year of Observation | AD |