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Astronomy
Constellations - Hydra - 18ome Hya

 
Identification Data
Common Name
ConstellationHydra
Star Name18ome Hya
Skymap Number9050197
Henry Draper (HD) Number77996
Harvard Revised (HR) Number3613
SAO Number117420
Durchmusterung (DM) NumberBD+05 2116
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number155420
Right Ascension (RA) J20009h 5m 58.366s
Declination (Dec) J2000+5° 5' 32.337"
Position Uncertainty0.0111s
Proper Motion in RA (J2000)/cos(Dec)-0.00127
Proper Motion in Dec (J2000)-0.011066
Radial Velocity+024.5km s-1
Trigonometric Parallax+0.00269s
Trigonometric Parallax Uncertainty0.00093s
GCI Unit Vector in X (J2000)-0.722430
GCI Unit Vector in Y (J2000)0.685723
GCI Unit Vector in Z (J2000)0.088761
Galactic Longitude224.70°
Galactic Latitude
32.11°
Observational Data
Observed Visual Magnitude (V)4.99
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.004
Observed B Magnitude6.22
Observed B-V Colour+1.226
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 Magnitude5.4
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeK2II-III
One-Dimensional Spectral ClassK0
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 13:15:42 GMT+01:00 2001
 
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