Astronomy
Constellations - Cygnus - 50alp Cyg (Deneb)

 
Identification Data
Common NameDeneb
ConstellationCygnus
Star Name50alp Cyg
Skymap Number20410095
Henry Draper (HD) Number197345
Harvard Revised (HR) Number7924
SAO Number49941
Durchmusterung (DM) NumberBD+44 3541
Washington Double Stars (WDS) Number
20414+4517
Positional Data
Position and Proper Motion (PPM) Number60323
Right Ascension (RA) J200020h 41m 25.914s
Declination (Dec) J2000+45° 16' 49.217"
Position Uncertainty0.0065s
Proper Motion in RA (J2000)/cos(Dec)+0.00015
Proper Motion in Dec (J2000)+0.001666
Radial Velocity-004.5km s-1
Trigonometric Parallax+0.00101s
Trigonometric Parallax Uncertainty0.00057s
GCI Unit Vector in X (J2000)0.455649
GCI Unit Vector in Y (J2000)-0.536182
GCI Unit Vector in Z (J2000)0.710558
Galactic Longitude84.29°
Galactic Latitude
2.00°
Observational Data
Observed Visual Magnitude (V)1.33
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.007
Observed B Magnitude1.44
Observed B-V Colour+0.112
Observed B Magnitude or (B-V) Magnitude Uncertainty0.010
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude1.3
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeA2Ia
One-Dimensional Spectral ClassA2
Position Angle106
Year of Observation1924. 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 13:15:39 GMT+01:00 2001