Identification Data |
Common Name | |
Constellation | Hydra |
Star Name | 27 Hya |
Skymap Number | 9200090 |
Henry Draper (HD) Number | 80586 |
Harvard Revised (HR) Number | 3709 |
SAO Number | 136768 |
Durchmusterung (DM) Number | SD-08 2643 |
Washington Double Stars (WDS) Number
| 09205-0933
|
Positional Data |
Position and Proper Motion (PPM) Number | 192278 |
Right Ascension (RA) J2000 | 9h 20m 29.018s |
Declination (Dec) J2000 | -9° 33' 20.501" |
Position Uncertainty | 0.0094s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00091 |
Proper Motion in Dec (J2000) | -0.026866 |
Radial Velocity | +024.5km s-1 |
Trigonometric Parallax | +0.01339s |
Trigonometric Parallax Uncertainty | 0.00082s |
GCI Unit Vector in X (J2000) | -0.756751 |
GCI Unit Vector in Y (J2000) | 0.632273 |
GCI Unit Vector in Z (J2000) | -0.166006 |
Galactic Longitude | 241.09° |
Galactic Latitude
| 27.11°
|
Observational Data |
Observed Visual Magnitude (V) | 4.81 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
Observed B Magnitude | 5.74 |
Observed B-V Colour | +0.928 |
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 | 4.1 |
Observed Photographic Magnitude | 5.8 |
Morgan Keenan (MK) Spectral Type | G8III-IV+F5V |
One-Dimensional Spectral Class | G5 |
Position Angle | 211 |
Year of Observation | 1963. AD |