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Astronomy
Constellations - Cygnus - 39 Cyg

 
Identification Data
Common Name
ConstellationCygnus
Star Name39 Cyg
Skymap Number20230172
Henry Draper (HD) Number194317
Harvard Revised (HR) Number7806
SAO Number69950
Durchmusterung (DM) NumberBD+31 4062
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number84863
Right Ascension (RA) J200020h 23m 51.620s
Declination (Dec) J2000+32° 11' 24.619"
Position Uncertainty0.0054s
Proper Motion in RA (J2000)/cos(Dec)+0.00281
Proper Motion in Dec (J2000)-0.005866
Radial Velocity-014.6km s-1
Trigonometric Parallax+0.01277s
Trigonometric Parallax Uncertainty0.00062s
GCI Unit Vector in X (J2000)0.497016
GCI Unit Vector in Y (J2000)-0.684962
GCI Unit Vector in Z (J2000)0.532731
Galactic Longitude71.72°
Galactic Latitude
-3.02°
Observational Data
Observed Visual Magnitude (V)4.43
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude5.77
Observed B-V Colour+1.337
Observed B Magnitude or (B-V) Magnitude Uncertainty0.003
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude4.6
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeK2.5IIIFe-0.5
One-Dimensional Spectral ClassK2
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 13:15:39 GMT+01:00 2001
 
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