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Astronomy
Constellations - Aquila - 31 Aql

 
Identification Data
Common Name
ConstellationAquila
Star Name31 Aql
Skymap Number19240223
Henry Draper (HD) Number182572
Harvard Revised (HR) Number7373
SAO Number104807
Durchmusterung (DM) NumberBD+11 3833
Washington Double Stars (WDS) Number
19250+1157
Positional Data
Position and Proper Motion (PPM) Number136256
Right Ascension (RA) J200019h 24m 58.200s
Declination (Dec) J2000+11° 56' 39.896"
Position Uncertainty0.0064s
Proper Motion in RA (J2000)/cos(Dec)+0.04916
Proper Motion in Dec (J2000)+0.643766
Radial Velocity-100.5km s-1
Trigonometric Parallax+0.06601s
Trigonometric Parallax Uncertainty0.00077s
GCI Unit Vector in X (J2000)0.354472
GCI Unit Vector in Y (J2000)-0.911875
GCI Unit Vector in Z (J2000)0.206963
Galactic Longitude47.36°
Galactic Latitude
-1.86°
Observational Data
Observed Visual Magnitude (V)5.16
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude5.92
Observed B-V Colour+0.759
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 Magnitude5.2
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeG7IVHdel1
One-Dimensional Spectral ClassG5
Position Angle335
Year of Observation1909. 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 13:15:32 GMT+01:00 2001
 
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