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Astronomy
Constellations - Cygnus - 77 Cyg

 
Identification Data
Common Name
ConstellationCygnus
Star Name77 Cyg
Skymap Number21420079
Henry Draper (HD) Number206644
Harvard Revised (HR) Number8300
SAO Number51207
Durchmusterung (DM) NumberBD+40 4615
Washington Double Stars (WDS) Number
21424+4105
Positional Data
Position and Proper Motion (PPM) Number61902
Right Ascension (RA) J200021h 42m 22.964s
Declination (Dec) J2000+41° 4' 37.226"
Position Uncertainty0.0130s
Proper Motion in RA (J2000)/cos(Dec)+0.00267
Proper Motion in Dec (J2000)+0.002367
Radial Velocity-024.5km s-1
Trigonometric Parallax+0.00876s
Trigonometric Parallax Uncertainty0.00061s
GCI Unit Vector in X (J2000)0.621961
GCI Unit Vector in Y (J2000)-0.425934
GCI Unit Vector in Z (J2000)0.657073
Galactic Longitude88.85°
Galactic Latitude
-8.96°
Observational Data
Observed Visual Magnitude (V)5.73
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude5.78
Observed B-V Colour+0.051
Observed B Magnitude or (B-V) Magnitude Uncertainty0.004
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.5
Observed Photographic Magnitude5.5
Morgan Keenan (MK) Spectral TypeA0V
One-Dimensional Spectral ClassA0
Position Angle
Year of Observation1993. 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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