Astronomy
Constellations - Hercules - 2 Her

 
Identification Data
Common Name
ConstellationHercules
Star Name2 Her
Skymap Number15540080
Henry Draper (HD) Number142780
Harvard Revised (HR) Number5932
SAO Number45788
Durchmusterung (DM) NumberBD+43 2542
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number55040
Right Ascension (RA) J200015h 54m 37.850s
Declination (Dec) J2000+43° 8' 18.842"
Position Uncertainty0.0067s
Proper Motion in RA (J2000)/cos(Dec)-0.00304
Proper Motion in Dec (J2000)+0.066166
Radial Velocity-010.3km s-1
Trigonometric Parallax+0.00521s
Trigonometric Parallax Uncertainty0.00055s
GCI Unit Vector in X (J2000)-0.379554
GCI Unit Vector in Y (J2000)-0.623220
GCI Unit Vector in Z (J2000)0.683765
Galactic Longitude68.67°
Galactic Latitude
49.87°
Observational Data
Observed Visual Magnitude (V)5.36
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude7.00
Observed B-V Colour+1.636
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 Magnitude5.5
Observed Photographic Magnitude7.3
Morgan Keenan (MK) Spectral TypeM3-III
One-Dimensional Spectral ClassM0
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 13:15:41 GMT+01:00 2001