Astronomy
Constellations - Hercules - 91the Her

 
Identification Data
Common Name
ConstellationHercules
Star Name91the Her
Skymap Number17560061
Henry Draper (HD) Number163770
Harvard Revised (HR) Number6695
SAO Number66485
Durchmusterung (DM) NumberBD+37 2982
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number80751
Right Ascension (RA) J200017h 56m 15.180s
Declination (Dec) J2000+37° 15' 1.941"
Position Uncertainty0.0065s
Proper Motion in RA (J2000)/cos(Dec)+0.00023
Proper Motion in Dec (J2000)+0.007266
Radial Velocity-027.9km s-1
Trigonometric Parallax+0.00487s
Trigonometric Parallax Uncertainty0.00054s
GCI Unit Vector in X (J2000)-0.013013
GCI Unit Vector in Y (J2000)-0.795890
GCI Unit Vector in Z (J2000)0.605301
Galactic Longitude63.26°
Galactic Latitude
26.42°
Observational Data
Observed Visual Magnitude (V)3.84
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude5.18
Observed B-V Colour+1.345
Observed B Magnitude or (B-V) Magnitude Uncertainty0.003
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude4.0
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeK1IIaCN2
One-Dimensional Spectral ClassK0
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