Astronomy
Constellations - Corona Borealis - 21nu 2CrB

 
Identification Data
Common Name
ConstellationCorona Borealis
Star Name21nu 2CrB
Skymap Number16220094
Henry Draper (HD) Number147767
Harvard Revised (HR) Number6108
SAO Number65259
Durchmusterung (DM) NumberBD+34 2774
Washington Double Stars (WDS) Number
16224+3348
Positional Data
Position and Proper Motion (PPM) Number79260
Right Ascension (RA) J200016h 22m 29.218s
Declination (Dec) J2000+33° 42' 12.522"
Position Uncertainty0.0061s
Proper Motion in RA (J2000)/cos(Dec)-0.00042
Proper Motion in Dec (J2000)+0.050066
Radial Velocity-039.7km s-1
Trigonometric Parallax+0.00598s
Trigonometric Parallax Uncertainty0.00058s
GCI Unit Vector in X (J2000)-0.343382
GCI Unit Vector in Y (J2000)-0.757747
GCI Unit Vector in Z (J2000)0.554895
Galactic Longitude54.68°
Galactic Latitude
44.51°
Observational Data
Observed Visual Magnitude (V)5.40
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude6.93
Observed B-V Colour+1.534
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 Magnitude5.3
Observed Photographic Magnitude6.5
Morgan Keenan (MK) Spectral TypeK5III
One-Dimensional Spectral ClassK5
Position Angle16
Year of Observation1921. 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 13:15:38 GMT+01:00 2001