Astronomy
Constellations - Hydra - 19 Hya

 
Identification Data
Common Name
ConstellationHydra
Star Name19 Hya
Skymap Number9080139
Henry Draper (HD) Number78556
Harvard Revised (HR) Number3630
SAO Number136604
Durchmusterung (DM) NumberSD-08 2588
Washington Double Stars (WDS) Number
09087-0835
Positional Data
Position and Proper Motion (PPM) Number192059
Right Ascension (RA) J20009h 8m 42.179s
Declination (Dec) J2000-8° 35' 22.286"
Position Uncertainty0.0111s
Proper Motion in RA (J2000)/cos(Dec)-0.00143
Proper Motion in Dec (J2000)-0.004467
Radial Velocity+023.4km s-1
Trigonometric Parallax+0.00363s
Trigonometric Parallax Uncertainty0.00097s
GCI Unit Vector in X (J2000)-0.725216
GCI Unit Vector in Y (J2000)0.672128
GCI Unit Vector in Z (J2000)-0.149355
Galactic Longitude238.30°
Galactic Latitude
25.34°
Observational Data
Observed Visual Magnitude (V)5.62
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.004
Observed B Magnitude5.56
Observed B-V Colour-0.061
Observed B Magnitude or (B-V) Magnitude Uncertainty0.005
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.5
Observed Photographic Magnitude5.5
Morgan Keenan (MK) Spectral TypeB9.5III
One-Dimensional Spectral ClassB8
Position Angle292
Year of Observation1966. 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