Astronomy
Constellations - Hydra - 22the Hya

 
Identification Data
Common Name
ConstellationHydra
Star Name22the Hya
Skymap Number9140076
Henry Draper (HD) Number79469
Harvard Revised (HR) Number3665
SAO Number117527
Durchmusterung (DM) NumberBD+02 2167
Washington Double Stars (WDS) Number
09144+0219
Positional Data
Position and Proper Motion (PPM) Number155592
Right Ascension (RA) J20009h 14m 21.859s
Declination (Dec) J2000+2° 18' 51.409"
Position Uncertainty0.0162s
Proper Motion in RA (J2000)/cos(Dec)+0.00751
Proper Motion in Dec (J2000)-0.306166
Radial Velocity-010.0km s-1
Trigonometric Parallax+0.02534s
Trigonometric Parallax Uncertainty0.00097s
GCI Unit Vector in X (J2000)-0.749396
GCI Unit Vector in Y (J2000)0.660889
GCI Unit Vector in Z (J2000)0.040381
Galactic Longitude228.78°
Galactic Latitude
32.53°
Observational Data
Observed Visual Magnitude (V)3.89
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude3.84
Observed B-V Colour-0.049
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 Magnitude3.8
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeB9.5V
One-Dimensional Spectral ClassA0
Position Angle220
Year of Observation1988. 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