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Astronomy
Constellations - Cygnus - 80pi 1Cyg (Azelfafage)

 
Identification Data
Common NameAzelfafage
ConstellationCygnus
Star Name80pi 1Cyg
Skymap Number21420019
Henry Draper (HD) Number206672
Harvard Revised (HR) Number8301
SAO Number33665
Durchmusterung (DM) NumberBD+50 3410
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number39758
Right Ascension (RA) J200021h 42m 5.664s
Declination (Dec) J2000+51° 11' 22.639"
Position Uncertainty0.0061s
Proper Motion in RA (J2000)/cos(Dec)+0.00056
Proper Motion in Dec (J2000)-0.002166
Radial Velocity-008.2km s-1
Trigonometric Parallax+0.00194s
Trigonometric Parallax Uncertainty0.00053s
GCI Unit Vector in X (J2000)0.516663
GCI Unit Vector in Y (J2000)-0.354779
GCI Unit Vector in Z (J2000)0.779224
Galactic Longitude95.49°
Galactic Latitude
-1.30°
Observational Data
Observed Visual Magnitude (V)4.68
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude4.56
Observed B-V Colour-0.121
Observed B Magnitude or (B-V) Magnitude Uncertainty0.002
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude4.8
Observed Photographic Magnitude4.6
Morgan Keenan (MK) Spectral TypeB3IV
One-Dimensional Spectral ClassB3
Position Angle68
Year of Observation1992. 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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