Identification Data |
Common Name | |
Constellation | Hydra |
Star Name | 44 Hya |
Skymap Number | 10340002 |
Henry Draper (HD) Number | 91550 |
Harvard Revised (HR) Number | 4145 |
SAO Number | 178979 |
Durchmusterung (DM) Number | BD-22 2946 |
Washington Double Stars (WDS) Number
| 10340-2345
|
Positional Data |
Position and Proper Motion (PPM) Number | 257847 |
Right Ascension (RA) J2000 | 10h 34m 0.884s |
Declination (Dec) J2000 | -23° 44' 42.593" |
Position Uncertainty | 0.0070s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00076 |
Proper Motion in Dec (J2000) | +0.021266 |
Radial Velocity | -003.9km s-1 |
Trigonometric Parallax | +0.00515s |
Trigonometric Parallax Uncertainty | 0.00067s |
GCI Unit Vector in X (J2000) | -0.851675 |
GCI Unit Vector in Y (J2000) | 0.335420 |
GCI Unit Vector in Z (J2000) | -0.402669 |
Galactic Longitude | 266.63° |
Galactic Latitude
| 29.27°
|
Observational Data |
Observed Visual Magnitude (V) | 5.07 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 6.66 |
Observed B-V Colour | +1.588 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.006 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 5.3 |
Observed Photographic Magnitude | |
Morgan Keenan (MK) Spectral Type | K4III |
One-Dimensional Spectral Class | K2 |
Position Angle | 61 |
Year of Observation | 1946. AD |