Astronomy
Constellations - Aquila - 55eta Aql

 
Identification Data
Common Name
ConstellationAquila
Star Name55eta Aql
Skymap Number19520120
Henry Draper (HD) Number187929
Harvard Revised (HR) Number7570
SAO Number125159
Durchmusterung (DM) NumberBD+00 4337
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number168843
Right Ascension (RA) J200019h 52m 28.367s
Declination (Dec) J2000+1° 0' 20.378"
Position Uncertainty0.0119s
Proper Motion in RA (J2000)/cos(Dec)+0.00046
Proper Motion in Dec (J2000)-0.007366
Radial Velocity-014.8km s-1
Trigonometric Parallax+0.00278s
Trigonometric Parallax Uncertainty0.00091s
GCI Unit Vector in X (J2000)0.471219
GCI Unit Vector in Y (J2000)-0.881841
GCI Unit Vector in Z (J2000)0.017551
Galactic Longitude40.94°
Galactic Latitude
-13.07°
Observational Data
Observed Visual Magnitude (V)3.87
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.040
Observed B Magnitude4.63
Observed B-V Colour+0.764
Observed B Magnitude or (B-V) Magnitude Uncertainty0.057
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeF6Ib
One-Dimensional Spectral ClassG0
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