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Astronomy
Constellations - Hydra - 47 Hya

 
Identification Data
Common Name
ConstellationHydra
Star Name47 Hya
Skymap Number13580063
Henry Draper (HD) Number121847
Harvard Revised (HR) Number5250
SAO Number182134
Durchmusterung (DM) NumberCD-2411202
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number262325
Right Ascension (RA) J200013h 58m 31.146s
Declination (Dec) J2000-24° 58' 20.095"
Position Uncertainty0.0089s
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 Uncertainty0.00069s
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 Longitude321.67°
Galactic Latitude
35.45°
Observational Data
Observed Visual Magnitude (V)5.21
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude5.12
Observed B-V Colour-0.090
Observed B Magnitude or (B-V) Magnitude Uncertainty0.004
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.2
Observed Photographic Magnitude5.1
Morgan Keenan (MK) Spectral TypeB8Vp(shell)
One-Dimensional Spectral ClassB8
Position Angle
Year of Observation 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))

 
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Page compiled: Sun Sep 02 13:15:43 GMT+01:00 2001
 
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