Astronomy
Constellations - Cygnus - 20 Cyg

 
Identification Data
Common Name
ConstellationCygnus
Star Name20 Cyg
Skymap Number19500153
Henry Draper (HD) Number188056
Harvard Revised (HR) Number7576
SAO Number32042
Durchmusterung (DM) NumberBD+52 2547
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number37840
Right Ascension (RA) J200019h 50m 37.723s
Declination (Dec) J2000+52° 59' 16.805"
Position Uncertainty0.0058s
Proper Motion in RA (J2000)/cos(Dec)-0.00114
Proper Motion in Dec (J2000)-0.068066
Radial Velocity-019.8km s-1
Trigonometric Parallax+0.01696s
Trigonometric Parallax Uncertainty0.00045s
GCI Unit Vector in X (J2000)0.279428
GCI Unit Vector in Y (J2000)-0.533200
GCI Unit Vector in Z (J2000)0.798509
Galactic Longitude86.23°
Galactic Latitude
13.14°
Observational Data
Observed Visual Magnitude (V)5.02
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude6.32
Observed B-V Colour+1.304
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 Magnitude5.2
Observed Photographic Magnitude6.2
Morgan Keenan (MK) Spectral TypeK3IIICN2
One-Dimensional Spectral ClassK2
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