Astronomy
Constellations - Aquarius - 20 Aqr

 
Identification Data
Common Name
ConstellationAquarius
Star Name20 Aqr
Skymap Number21240183
Henry Draper (HD) Number203843
Harvard Revised (HR) Number8192
SAO Number145376
Durchmusterung (DM) NumberSD-04 5444
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number205165
Right Ascension (RA) J200021h 24m 51.675s
Declination (Dec) J2000-3° 23' 54.086"
Position Uncertainty0.0110s
Proper Motion in RA (J2000)/cos(Dec)-0.00044
Proper Motion in Dec (J2000)-0.050366
Radial Velocity-023.2km s-1
Trigonometric Parallax+0.01403s
Trigonometric Parallax Uncertainty0.00089s
GCI Unit Vector in X (J2000)0.778135
GCI Unit Vector in Y (J2000)-0.625294
GCI Unit Vector in Z (J2000)-0.059278
Galactic Longitude49.30°
Galactic Latitude
-35.33°
Observational Data
Observed Visual Magnitude (V)6.39
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.006
Observed B Magnitude6.73
Observed B-V Colour+0.337
Observed B Magnitude or (B-V) Magnitude Uncertainty0.008
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude6.8
Observed Photographic Magnitude6.7
Morgan Keenan (MK) Spectral TypeF0III
One-Dimensional Spectral ClassF0
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 13:15:32 GMT+01:00 2001