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Astronomy
Constellations - Ursa Major - 31 UMa

 
Identification Data
Common Name
ConstellationUrsa Major
Star Name31 UMa
Skymap Number9550096
Henry Draper (HD) Number85795
Harvard Revised (HR) Number3917
SAO Number27430
Durchmusterung (DM) NumberBD+50 1698
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number51579
Right Ascension (RA) J20009h 55m 43.002s
Declination (Dec) J2000+49° 49' 11.434"
Position Uncertainty0.0060s
Proper Motion in RA (J2000)/cos(Dec)-0.00036
Proper Motion in Dec (J2000)+0.019766
Radial Velocity-005.9km s-1
Trigonometric Parallax+0.01465s
Trigonometric Parallax Uncertainty0.00073s
GCI Unit Vector in X (J2000)-0.552627
GCI Unit Vector in Y (J2000)0.332982
GCI Unit Vector in Z (J2000)0.764020
Galactic Longitude166.65°
Galactic Latitude
49.63°
Observational Data
Observed Visual Magnitude (V)5.28
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude5.36
Observed B-V Colour+0.075
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 Magnitude5.3
Observed Photographic Magnitude5.4
Morgan Keenan (MK) Spectral TypeA3III
One-Dimensional Spectral ClassA2
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))

 
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Page compiled: Sun Sep 02 13:15:52 GMT+01:00 2001
 
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