Astronomy
Constellations - Aquila - 57 Aql

 
Identification Data
Common Name
ConstellationAquila
Star Name57 Aql
Skymap Number19540135
Henry Draper (HD) Number188294
Harvard Revised (HR) Number7594
SAO Number143899
Durchmusterung (DM) NumberSD-08 5155
Washington Double Stars (WDS) Number
19546-0814
Positional Data
Position and Proper Motion (PPM) Number203425
Right Ascension (RA) J200019h 54m 38.062s
Declination (Dec) J2000-8° 14' 13.372"
Position Uncertainty0.0109s
Proper Motion in RA (J2000)/cos(Dec)+0.00027
Proper Motion in Dec (J2000)-0.030266
Radial Velocity-005.0km s-1
Trigonometric Parallax+0.00902s
Trigonometric Parallax Uncertainty0.00109s
GCI Unit Vector in X (J2000)0.474642
GCI Unit Vector in Y (J2000)-0.868441
GCI Unit Vector in Z (J2000)-0.143269
Galactic Longitude32.66°
Galactic Latitude
-17.77°
Observational Data
Observed Visual Magnitude (V)6.44
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.008
Observed B Magnitude6.42
Observed B-V Colour-0.019
Observed B Magnitude or (B-V) Magnitude Uncertainty0.010
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude6.9
Observed Photographic Magnitude6.3
Morgan Keenan (MK) Spectral TypeB8V
One-Dimensional Spectral ClassB7
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