Astronomy
Constellations - Hercules - 77 Her

 
Identification Data
Common Name
ConstellationHercules
Star Name77 Her
Skymap Number17260158
Henry Draper (HD) Number158414
Harvard Revised (HR) Number6509
SAO Number46723
Durchmusterung (DM) NumberBD+48 2517
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number56194
Right Ascension (RA) J200017h 26m 44.242s
Declination (Dec) J2000+48° 15' 36.233"
Position Uncertainty0.0068s
Proper Motion in RA (J2000)/cos(Dec)+0.00002
Proper Motion in Dec (J2000)-0.003066
Radial Velocity-009.0km s-1
Trigonometric Parallax+0.00898s
Trigonometric Parallax Uncertainty0.00050s
GCI Unit Vector in X (J2000)-0.096285
GCI Unit Vector in Y (J2000)-0.658751
GCI Unit Vector in Z (J2000)0.746174
Galactic Longitude74.70°
Galactic Latitude
33.66°
Observational Data
Observed Visual Magnitude (V)5.84
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude5.97
Observed B-V Colour+0.127
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 Magnitude5.8
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeA4V
One-Dimensional Spectral ClassA2
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))

 
Page compiled: Sun Sep 02 13:15:42 GMT+01:00 2001