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Astronomy
Constellations - Cygnus - 4 Cyg

 
Identification Data
Common Name
ConstellationCygnus
Star Name4 Cyg
Skymap Number19260036
Henry Draper (HD) Number183056
Harvard Revised (HR) Number7395
SAO Number68301
Durchmusterung (DM) NumberBD+36 3557
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number82895
Right Ascension (RA) J200019h 26m 9.126s
Declination (Dec) J2000+36° 19' 4.427"
Position Uncertainty0.0062s
Proper Motion in RA (J2000)/cos(Dec)+0.00035
Proper Motion in Dec (J2000)+0.013066
Radial Velocity-022.0km s-1
Trigonometric Parallax+0.00499s
Trigonometric Parallax Uncertainty0.00051s
GCI Unit Vector in X (J2000)0.295803
GCI Unit Vector in Y (J2000)-0.749482
GCI Unit Vector in Z (J2000)0.592265
Galactic Longitude69.12°
Galactic Latitude
9.31°
Observational Data
Observed Visual Magnitude (V)5.18
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude5.07
Observed B-V Colour-0.112
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 Magnitude5.2
Observed Photographic Magnitude5.1
Morgan Keenan (MK) Spectral TypeB9pSi
One-Dimensional Spectral ClassA0
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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