Astronomy
Constellations - Ursa Major - 73 UMa

 
Identification Data
Common Name
ConstellationUrsa Major
Star Name73 UMa
Skymap Number12270075
Henry Draper (HD) Number108502
Harvard Revised (HR) Number4745
SAO Number28394
Durchmusterung (DM) NumberBD+56 1598
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number33568
Right Ascension (RA) J200012h 27m 35.104s
Declination (Dec) J2000+55° 42' 45.808"
Position Uncertainty0.0062s
Proper Motion in RA (J2000)/cos(Dec)-0.00248
Proper Motion in Dec (J2000)-0.011466
Radial Velocity+017.1km s-1
Trigonometric Parallax+0.00743s
Trigonometric Parallax Uncertainty0.00061s
GCI Unit Vector in X (J2000)-0.559267
GCI Unit Vector in Y (J2000)-0.067642
GCI Unit Vector in Z (J2000)0.826223
Galactic Longitude129.88°
Galactic Latitude
61.09°
Observational Data
Observed Visual Magnitude (V)5.69
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude7.24
Observed B-V Colour+1.552
Observed B Magnitude or (B-V) Magnitude Uncertainty0.006
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.8
Observed Photographic Magnitude7.3
Morgan Keenan (MK) Spectral TypeM2IIIb
One-Dimensional Spectral ClassM0
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 13:15:52 GMT+01:00 2001