Astronomy
Constellations - Hercules - 7kap Her (Marfik)

 
Identification Data
Common NameMarfik
ConstellationHercules
Star Name7kap Her
Skymap Number16080010
Henry Draper (HD) Number145001
Harvard Revised (HR) Number6008
SAO Number101951
Durchmusterung (DM) NumberBD+17 2964
Washington Double Stars (WDS) Number
16081+1703
Positional Data
Position and Proper Motion (PPM) Number132011
Right Ascension (RA) J200016h 8m 4.525s
Declination (Dec) J2000+17° 2' 49.129"
Position Uncertainty0.0166s
Proper Motion in RA (J2000)/cos(Dec)-0.00239
Proper Motion in Dec (J2000)-0.005567
Radial Velocity-009.5km s-1
Trigonometric Parallax+0.00840s
Trigonometric Parallax Uncertainty0.00123s
GCI Unit Vector in X (J2000)-0.448567
GCI Unit Vector in Y (J2000)-0.844303
GCI Unit Vector in Z (J2000)0.293156
Galactic Longitude31.02°
Galactic Latitude
43.64°
Observational Data
Observed Visual Magnitude (V)5.00
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude5.93
Observed B-V Colour+0.926
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 Magnitude5.3
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeG8III
One-Dimensional Spectral ClassG5
Position Angle13
Year of Observation1985. 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