Astronomy
Constellations - Cygnus - 57 Cyg

 
Identification Data
Common Name
ConstellationCygnus
Star Name57 Cyg
Skymap Number20530059
Henry Draper (HD) Number199081
Harvard Revised (HR) Number8001
SAO Number50180
Durchmusterung (DM) NumberBD+43 3755
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number60622
Right Ascension (RA) J200020h 53m 14.754s
Declination (Dec) J2000+44° 23' 14.138"
Position Uncertainty0.0062s
Proper Motion in RA (J2000)/cos(Dec)+0.00105
Proper Motion in Dec (J2000)-0.002466
Radial Velocity-011.9km s-1
Trigonometric Parallax+0.00651s
Trigonometric Parallax Uncertainty0.00057s
GCI Unit Vector in X (J2000)0.490209
GCI Unit Vector in Y (J2000)-0.519989
GCI Unit Vector in Z (J2000)0.699504
Galactic Longitude84.91°
Galactic Latitude
-0.19°
Observational Data
Observed Visual Magnitude (V)4.79
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude4.66
Observed B-V Colour-0.133
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 Magnitude4.7
Observed Photographic Magnitude4.5
Morgan Keenan (MK) Spectral TypeB5V
One-Dimensional Spectral ClassB3
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