Astronomy
Constellations - Aquila - 53alp Aql (Altair)

 
Identification Data
Common NameAltair
ConstellationAquila
Star Name53alp Aql
Skymap Number19500184
Henry Draper (HD) Number187642
Harvard Revised (HR) Number7557
SAO Number125122
Durchmusterung (DM) NumberBD+08 4236
Washington Double Stars (WDS) Number
19508+0852
Positional Data
Position and Proper Motion (PPM) Number168779
Right Ascension (RA) J200019h 50m 46.999s
Declination (Dec) J2000+8° 52' 5.959"
Position Uncertainty0.0088s
Proper Motion in RA (J2000)/cos(Dec)+0.03622
Proper Motion in Dec (J2000)+0.385666
Radial Velocity-026.1km s-1
Trigonometric Parallax+0.19445s
Trigonometric Parallax Uncertainty0.00094s
GCI Unit Vector in X (J2000)0.459221
GCI Unit Vector in Y (J2000)-0.874842
GCI Unit Vector in Z (J2000)0.154164
Galactic Longitude47.74°
Galactic Latitude
-8.91°
Observational Data
Observed Visual Magnitude (V)0.93
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.010
Observed B Magnitude1.20
Observed B-V Colour+0.271
Observed B Magnitude or (B-V) Magnitude Uncertainty0.015
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude.9
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeA7V
One-Dimensional Spectral ClassA5
Position Angle301
Year of Observation1925. 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