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Astronomy
Constellations - Hercules - 74 Her

 
Identification Data
Common Name
ConstellationHercules
Star Name74 Her
Skymap Number17200061
Henry Draper (HD) Number157325
Harvard Revised (HR) Number6464
SAO Number46645
Durchmusterung (DM) NumberBD+46 2293
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number56107
Right Ascension (RA) J200017h 20m 21.121s
Declination (Dec) J2000+46° 14' 26.808"
Position Uncertainty0.0077s
Proper Motion in RA (J2000)/cos(Dec)-0.00288
Proper Motion in Dec (J2000)+0.040966
Radial Velocity-056.9km s-1
Trigonometric Parallax+0.00566s
Trigonometric Parallax Uncertainty0.00053s
GCI Unit Vector in X (J2000)-0.119054
GCI Unit Vector in Y (J2000)-0.681306
GCI Unit Vector in Z (J2000)0.722253
Galactic Longitude72.16°
Galactic Latitude
34.58°
Observational Data
Observed Visual Magnitude (V)5.50
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude7.06
Observed B-V Colour+1.557
Observed B Magnitude or (B-V) Magnitude Uncertainty0.007
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.8
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeM0III
One-Dimensional Spectral ClassK2
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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