Astronomy
Constellations - Cygnus - 40 Cyg

 
Identification Data
Common Name
ConstellationCygnus
Star Name40 Cyg
Skymap Number20270153
Henry Draper (HD) Number195050
Harvard Revised (HR) Number7826
SAO Number70056
Durchmusterung (DM) NumberBD+37 3941
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number84984
Right Ascension (RA) J200020h 27m 34.257s
Declination (Dec) J2000+38° 26' 25.194"
Position Uncertainty0.0053s
Proper Motion in RA (J2000)/cos(Dec)-0.00196
Proper Motion in Dec (J2000)-0.078666
Radial Velocity+000.4km s-1
Trigonometric Parallax+0.01207s
Trigonometric Parallax Uncertainty0.00053s
GCI Unit Vector in X (J2000)0.470203
GCI Unit Vector in Y (J2000)-0.626417
GCI Unit Vector in Z (J2000)0.621699
Galactic Longitude77.27°
Galactic Latitude
-0.02°
Observational Data
Observed Visual Magnitude (V)5.64
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude5.71
Observed B-V Colour+0.068
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 Magnitude5.4
Morgan Keenan (MK) Spectral TypeA3V
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))

 
Page compiled: Sun Sep 02 13:15:39 GMT+01:00 2001