Astronomy
Constellations - Serpens - 20chi Ser

 
Identification Data
Common Name
ConstellationSerpens
Star Name20chi Ser
Skymap Number15410109
Henry Draper (HD) Number140160
Harvard Revised (HR) Number5843
SAO Number101683
Durchmusterung (DM) NumberBD+13 2982
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number131611
Right Ascension (RA) J200015h 41m 47.415s
Declination (Dec) J2000+12° 50' 51.099"
Position Uncertainty0.0103s
Proper Motion in RA (J2000)/cos(Dec)+0.00271
Proper Motion in Dec (J2000)-0.004666
Radial Velocity+001.9km s-1
Trigonometric Parallax+0.01428s
Trigonometric Parallax Uncertainty0.00084s
GCI Unit Vector in X (J2000)-0.552961
GCI Unit Vector in Y (J2000)-0.802989
GCI Unit Vector in Z (J2000)0.222357
Galactic Longitude21.84°
Galactic Latitude
47.75°
Observational Data
Observed Visual Magnitude (V)5.33
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude5.37
Observed B-V Colour+0.037
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 Magnitude5.3
Observed Photographic Magnitude5.3
Morgan Keenan (MK) Spectral TypeA0pSr
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 13:15:49 GMT+01:00 2001