Astronomy
Constellations - Hercules - 25 Her

 
Identification Data
Common Name
ConstellationHercules
Star Name25 Her
Skymap Number16250084
Henry Draper (HD) Number148283
Harvard Revised (HR) Number6123
SAO Number65290
Durchmusterung (DM) NumberBD+37 2750
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number79300
Right Ascension (RA) J200016h 25m 24.167s
Declination (Dec) J2000+37° 23' 38.685"
Position Uncertainty0.0073s
Proper Motion in RA (J2000)/cos(Dec)+0.00022
Proper Motion in Dec (J2000)+0.000266
Radial Velocity-001.3km s-1
Trigonometric Parallax+0.01273s
Trigonometric Parallax Uncertainty0.00057s
GCI Unit Vector in X (J2000)-0.318695
GCI Unit Vector in Y (J2000)-0.727756
GCI Unit Vector in Z (J2000)0.607294
Galactic Longitude59.90°
Galactic Latitude
44.23°
Observational Data
Observed Visual Magnitude (V)5.54
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude5.71
Observed B-V Colour+0.172
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 Magnitude5.5
Observed Photographic Magnitude5.6
Morgan Keenan (MK) Spectral TypeA5V
One-Dimensional Spectral ClassA3
Position Angle176
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 13:15:41 GMT+01:00 2001