Astronomy
Constellations - Ophiuchus - 49sig Oph

 
Identification Data
Common Name
ConstellationOphiuchus
Star Name49sig Oph
Skymap Number17260109
Henry Draper (HD) Number157999
Harvard Revised (HR) Number6498
SAO Number122387
Durchmusterung (DM) NumberBD+04 3422
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number164002
Right Ascension (RA) J200017h 26m 30.880s
Declination (Dec) J2000+4° 8' 25.295"
Position Uncertainty0.0082s
Proper Motion in RA (J2000)/cos(Dec)+0.00008
Proper Motion in Dec (J2000)+0.007166
Radial Velocity-027.1km s-1
Trigonometric Parallax+0.00278s
Trigonometric Parallax Uncertainty0.00092s
GCI Unit Vector in X (J2000)-0.145208
GCI Unit Vector in Y (J2000)-0.986763
GCI Unit Vector in Z (J2000)0.072200
Galactic Longitude26.77°
Galactic Latitude
20.75°
Observational Data
Observed Visual Magnitude (V)4.32
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude5.81
Observed B-V Colour+1.489
Observed B Magnitude or (B-V) Magnitude Uncertainty0.005
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude4.4
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeK2II
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 13:15:46 GMT+01:00 2001