Astronomy
Constellations - Ursa Major - 55 UMa

 
Identification Data
Common Name
ConstellationUrsa Major
Star Name55 UMa
Skymap Number11190023
Henry Draper (HD) Number98353
Harvard Revised (HR) Number4380
SAO Number62491
Durchmusterung (DM) NumberBD+38 2225
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number75796
Right Ascension (RA) J200011h 19m 7.901s
Declination (Dec) J2000+38° 11' 8.004"
Position Uncertainty0.0108s
Proper Motion in RA (J2000)/cos(Dec)-0.00485
Proper Motion in Dec (J2000)-0.068166
Radial Velocity-003.0km s-1
Trigonometric Parallax+0.01782s
Trigonometric Parallax Uncertainty0.00075s
GCI Unit Vector in X (J2000)-0.773549
GCI Unit Vector in Y (J2000)0.139421
GCI Unit Vector in Z (J2000)0.618210
Galactic Longitude177.35°
Galactic Latitude
67.74°
Observational Data
Observed Visual Magnitude (V)4.76
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude4.87
Observed B-V Colour+0.114
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 Magnitude4.8
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeA1Vp:
One-Dimensional Spectral ClassA2
Position Angle
Year of Observation1993. 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