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Astronomy
Constellations - Hercules - 68 Her

 
Identification Data
Common Name
ConstellationHercules
Star Name68 Her
Skymap Number17170071
Henry Draper (HD) Number156633
Harvard Revised (HR) Number6431
SAO Number65913
Durchmusterung (DM) NumberBD+33 2864
Washington Double Stars (WDS) Number
17173+3306
Positional Data
Position and Proper Motion (PPM) Number80086
Right Ascension (RA) J200017h 17m 19.567s
Declination (Dec) J2000+33° 6' 0.361"
Position Uncertainty0.0069s
Proper Motion in RA (J2000)/cos(Dec)-0.00029
Proper Motion in Dec (J2000)-0.005766
Radial Velocity-021.0km s-1
Trigonometric Parallax+0.00377s
Trigonometric Parallax Uncertainty0.00056s
GCI Unit Vector in X (J2000)-0.155083
GCI Unit Vector in Y (J2000)-0.823238
GCI Unit Vector in Z (J2000)0.546103
Galactic Longitude56.41°
Galactic Latitude
33.14°
Observational Data
Observed Visual Magnitude (V)4.81
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.009
Observed B Magnitude4.64
Observed B-V Colour-0.169
Observed B Magnitude or (B-V) Magnitude Uncertainty0.010
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude
Observed Photographic Magnitude3.0
Morgan Keenan (MK) Spectral TypeB1.5Vp+B5III
One-Dimensional Spectral ClassB3
Position Angle59
Year of Observation1943. 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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