Astronomy
Constellations - Hercules - 64alp1Her (Rasalgethi)

 
Identification Data
Common NameRasalgethi
ConstellationHercules
Star Name64alp1Her
Skymap Number17140177
Henry Draper (HD) Number156014
Harvard Revised (HR) Number6406
SAO Number102680
Durchmusterung (DM) NumberBD+14 3207
Washington Double Stars (WDS) Number
17146+1423
Positional Data
Position and Proper Motion (PPM) Number400225
Right Ascension (RA) J200017h 14m 38.858s
Declination (Dec) J2000+14° 23' 25.198"
Position Uncertainty0.0243s
Proper Motion in RA (J2000)/cos(Dec)-0.00046
Proper Motion in Dec (J2000)+0.032867
Radial Velocity-032.5km s-1
Trigonometric Parallax+0.00853s
Trigonometric Parallax Uncertainty0.00280s
GCI Unit Vector in X (J2000)-0.190430
GCI Unit Vector in Y (J2000)-0.949722
GCI Unit Vector in Z (J2000)0.248526
Galactic Longitude35.54°
Galactic Latitude
27.82°
Observational Data
Observed Visual Magnitude (V)2.7
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty
Observed B Magnitude4.92
Observed B-V Colour+1.44
Observed B Magnitude or (B-V) Magnitude Uncertainty0.050
Observed U Magnitude5.93
Observed U-B Colour+1.01
Observed U Magnitude or (U-B) Magnitude Uncertainty0.050
Observed Photovisual Magnitude3.5
Observed Photographic Magnitude4.8
Morgan Keenan (MK) Spectral TypeM5Ib-II
One-Dimensional Spectral ClassMb
Position Angle106
Year of Observation1993. 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