Astronomy
Constellations - Serpens - 21iot Ser

 
Identification Data
Common Name
ConstellationSerpens
Star Name21iot Ser
Skymap Number15410071
Henry Draper (HD) Number140159
Harvard Revised (HR) Number5842
SAO Number101682
Durchmusterung (DM) NumberBD+20 3138
Washington Double Stars (WDS) Number
15416+1940
Positional Data
Position and Proper Motion (PPM) Number131608
Right Ascension (RA) J200015h 41m 33.049s
Declination (Dec) J2000+19° 40' 13.446"
Position Uncertainty0.0302s
Proper Motion in RA (J2000)/cos(Dec)-0.00410
Proper Motion in Dec (J2000)-0.038667
Radial Velocity-017.2km s-1
Trigonometric Parallax+0.01697s
Trigonometric Parallax Uncertainty0.00077s
GCI Unit Vector in X (J2000)-0.534873
GCI Unit Vector in Y (J2000)-0.774987
GCI Unit Vector in Z (J2000)0.336609
Galactic Longitude31.42°
Galactic Latitude
50.45°
Observational Data
Observed Visual Magnitude (V)4.51
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude4.57
Observed B-V Colour+0.058
Observed B Magnitude or (B-V) Magnitude Uncertainty0.002
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude4.5
Observed Photographic Magnitude4.6
Morgan Keenan (MK) Spectral TypeA1V
One-Dimensional Spectral ClassA2
Position Angle
Year of Observation1993. 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