Astronomy
Constellations - Ophiuchus - 74 Oph

 
Identification Data
Common Name
ConstellationOphiuchus
Star Name74 Oph
Skymap Number18200199
Henry Draper (HD) Number168656
Harvard Revised (HR) Number6866
SAO Number123377
Durchmusterung (DM) NumberBD+03 3680
Washington Double Stars (WDS) Number
18209+0323
Positional Data
Position and Proper Motion (PPM) Number165644
Right Ascension (RA) J200018h 20m 52.063s
Declination (Dec) J2000+3° 22' 37.795"
Position Uncertainty0.0094s
Proper Motion in RA (J2000)/cos(Dec)+0.00011
Proper Motion in Dec (J2000)+0.008566
Radial Velocity+004.8km s-1
Trigonometric Parallax+0.01211s
Trigonometric Parallax Uncertainty0.00083s
GCI Unit Vector in X (J2000)0.090769
GCI Unit Vector in Y (J2000)-0.994128
GCI Unit Vector in Z (J2000)0.058909
Galactic Longitude32.47°
Galactic Latitude
8.34°
Observational Data
Observed Visual Magnitude (V)4.85
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude5.76
Observed B-V Colour+0.909
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 Magnitude4.9
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeG8III
One-Dimensional Spectral ClassG5
Position Angle286
Year of Observation1935. 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