Astronomy
Constellations - Hydra - 44 Hya

 
Identification Data
Common Name
ConstellationHydra
Star Name44 Hya
Skymap Number10340002
Henry Draper (HD) Number91550
Harvard Revised (HR) Number4145
SAO Number178979
Durchmusterung (DM) NumberBD-22 2946
Washington Double Stars (WDS) Number
10340-2345
Positional Data
Position and Proper Motion (PPM) Number257847
Right Ascension (RA) J200010h 34m 0.884s
Declination (Dec) J2000-23° 44' 42.593"
Position Uncertainty0.0070s
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 Uncertainty0.00067s
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 Longitude266.63°
Galactic Latitude
29.27°
Observational Data
Observed Visual Magnitude (V)5.07
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude6.66
Observed B-V Colour+1.588
Observed B Magnitude or (B-V) Magnitude Uncertainty0.006
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.3
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeK4III
One-Dimensional Spectral ClassK2
Position Angle61
Year of Observation1946. AD

Data Source
SKY2000 - Master Star Catalog - Star Catalog Database, Version 2
    Sande C.B., Warren Jr. W.H., Tracewell D.A., Home A.T., Miller A.C.
    (Goddard Space Flight Center, Flight Dynamics Division (1998))

 
Page compiled: Sun Sep 02 13:15:42 GMT+01:00 2001