Astronomy
Constellations - Corona Borealis - 20nu 1CrB

 
Identification Data
Common Name
ConstellationCorona Borealis
Star Name20nu 1CrB
Skymap Number16220058
Henry Draper (HD) Number147749
Harvard Revised (HR) Number6107
SAO Number65257
Durchmusterung (DM) NumberBD+34 2773
Washington Double Stars (WDS) Number
16224+3348
Positional Data
Position and Proper Motion (PPM) Number79256
Right Ascension (RA) J200016h 22m 21.425s
Declination (Dec) J2000+33° 47' 56.586"
Position Uncertainty0.0061s
Proper Motion in RA (J2000)/cos(Dec)+0.00044
Proper Motion in Dec (J2000)-0.038366
Radial Velocity-012.7km s-1
Trigonometric Parallax+0.00587s
Trigonometric Parallax Uncertainty0.00058s
GCI Unit Vector in X (J2000)-0.343429
GCI Unit Vector in Y (J2000)-0.756708
GCI Unit Vector in Z (J2000)0.556282
Galactic Longitude54.81°
Galactic Latitude
44.55°
Observational Data
Observed Visual Magnitude (V)5.21
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude6.81
Observed B-V Colour+1.603
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 Magnitude5.4
Observed Photographic Magnitude6.7
Morgan Keenan (MK) Spectral TypeM2IIIab
One-Dimensional Spectral ClassM0
Position Angle165
Year of Observation1922. 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