Astronomy
Constellations - Boötes - 20 Boo

 
Identification Data
Common Name
ConstellationBoötes
Star Name20 Boo
Skymap Number14190090
Henry Draper (HD) Number125560
Harvard Revised (HR) Number5370
SAO Number100980
Durchmusterung (DM) NumberBD+16 2637
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number130498
Right Ascension (RA) J200014h 19m 45.235s
Declination (Dec) J2000+16° 18' 25.012"
Position Uncertainty0.0062s
Proper Motion in RA (J2000)/cos(Dec)-0.00979
Proper Motion in Dec (J2000)+0.060366
Radial Velocity-007.8km s-1
Trigonometric Parallax+0.01712s
Trigonometric Parallax Uncertainty0.00068s
GCI Unit Vector in X (J2000)-0.786789
GCI Unit Vector in Y (J2000)-0.549658
GCI Unit Vector in Z (J2000)0.280783
Galactic Longitude9.60°
Galactic Latitude
66.86°
Observational Data
Observed Visual Magnitude (V)4.84
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude6.08
Observed B-V Colour+1.238
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 Magnitude5.0
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeK3III
One-Dimensional Spectral ClassK0
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 13:15:34 GMT+01:00 2001