Astronomy
Constellations - Hydra - xi Hya

 
Identification Data
Common Name
ConstellationHydra
Star Namexi Hya
Skymap Number11330003
Henry Draper (HD) Number100407
Harvard Revised (HR) Number4450
SAO Number202558
Durchmusterung (DM) NumberCD-31 9083
Washington Double Stars (WDS) Number
11329-3151
Positional Data
Position and Proper Motion (PPM) Number289049
Right Ascension (RA) J200011h 33m 0.115s
Declination (Dec) J2000-31° 51' 27.451"
Position Uncertainty0.0083s
Proper Motion in RA (J2000)/cos(Dec)-0.01641
Proper Motion in Dec (J2000)-0.041666
Radial Velocity-004.6km s-1
Trigonometric Parallax+0.02523s
Trigonometric Parallax Uncertainty0.00083s
GCI Unit Vector in X (J2000)-0.843476
GCI Unit Vector in Y (J2000)0.099825
GCI Unit Vector in Z (J2000)-0.527810
Galactic Longitude284.09°
Galactic Latitude
28.13°
Observational Data
Observed Visual Magnitude (V)3.54
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude4.48
Observed B-V Colour+0.944
Observed B Magnitude or (B-V) Magnitude Uncertainty0.003
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude3.7
Observed Photographic Magnitude4.5
Morgan Keenan (MK) Spectral TypeG7III
One-Dimensional Spectral ClassG5
Position Angle150
Year of Observation1928. 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 13:15:43 GMT+01:00 2001