Astronomy
Constellations - Ophiuchus - 40xi Oph

 
Identification Data
Common Name
ConstellationOphiuchus
Star Name40xi Oph
Skymap Number17200198
Henry Draper (HD) Number156897
Harvard Revised (HR) Number6445
SAO Number185296
Durchmusterung (DM) NumberSD-20 4731
Washington Double Stars (WDS) Number
17210-2107
Positional Data
Position and Proper Motion (PPM) Number266721
Right Ascension (RA) J200017h 21m 0.374s
Declination (Dec) J2000-21° 6' 46.557"
Position Uncertainty0.0123s
Proper Motion in RA (J2000)/cos(Dec)+0.01872
Proper Motion in Dec (J2000)-0.204766
Radial Velocity-008.8km s-1
Trigonometric Parallax+0.05748s
Trigonometric Parallax Uncertainty0.00093s
GCI Unit Vector in X (J2000)-0.157956
GCI Unit Vector in Y (J2000)-0.919402
GCI Unit Vector in Z (J2000)-0.360207
Galactic Longitude3.60°
Galactic Latitude
8.92°
Observational Data
Observed Visual Magnitude (V)4.39
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty
Observed B Magnitude4.78
Observed B-V Colour+0.394
Observed B Magnitude or (B-V) Magnitude Uncertainty0.019
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude3.9
Observed Photographic Magnitude4.9
Morgan Keenan (MK) Spectral TypeF1III-IV
One-Dimensional Spectral ClassF5
Position Angle44
Year of Observation1966. 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 13:15:46 GMT+01:00 2001