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Astronomy
Constellations - Ara - the Ara

 
Identification Data
Common Name
ConstellationAra
Star Namethe Ara
Skymap Number18060160
Henry Draper (HD) Number165024
Harvard Revised (HR) Number6743
SAO Number245242
Durchmusterung (DM) NumberCD-5011720
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number346577
Right Ascension (RA) J200018h 6m 37.871s
Declination (Dec) J2000-50° 5' 29.318"
Position Uncertainty0.0068s
Proper Motion in RA (J2000)/cos(Dec)-0.00088
Proper Motion in Dec (J2000)-0.009366
Radial Velocity+003.4km s-1
Trigonometric Parallax+0.00322s
Trigonometric Parallax Uncertainty0.00071s
GCI Unit Vector in X (J2000)0.018560
GCI Unit Vector in Y (J2000)-0.641295
GCI Unit Vector in Z (J2000)-0.767070
Galactic Longitude343.33°
Galactic Latitude
-13.82°
Observational Data
Observed Visual Magnitude (V)3.67
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude3.57
Observed B-V Colour-0.103
Observed B Magnitude or (B-V) Magnitude Uncertainty0.003
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude3.9
Observed Photographic Magnitude3.7
Morgan Keenan (MK) Spectral TypeB2Ib
One-Dimensional Spectral ClassB1
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))

 
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Page compiled: Sun Sep 02 13:15:33 GMT+01:00 2001
 
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