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Astronomy
Constellations - Aquila - 18 Aql

 
Identification Data
Common Name
ConstellationAquila
Star Name18 Aql
Skymap Number19060223
Henry Draper (HD) Number178125
Harvard Revised (HR) Number7248
SAO Number104488
Durchmusterung (DM) NumberBD+10 3787
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number135805
Right Ascension (RA) J200019h 6m 58.603s
Declination (Dec) J2000+11° 4' 16.423"
Position Uncertainty0.0085s
Proper Motion in RA (J2000)/cos(Dec)-0.00002
Proper Motion in Dec (J2000)-0.031567
Radial Velocity-018.6km s-1
Trigonometric Parallax+0.00643s
Trigonometric Parallax Uncertainty0.00079s
GCI Unit Vector in X (J2000)0.282737
GCI Unit Vector in Y (J2000)-0.939779
GCI Unit Vector in Z (J2000)0.192029
Galactic Longitude44.55°
Galactic Latitude
1.63°
Observational Data
Observed Visual Magnitude (V)5.08
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude5.02
Observed B-V Colour-0.057
Observed B Magnitude or (B-V) Magnitude Uncertainty0.004
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.1
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeB8III
One-Dimensional Spectral ClassB8
Position Angle304
Year of Observation1991. 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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