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Astronomy
Constellations - Lyra - 21the Lyr

 
Identification Data
Common Name
ConstellationLyra
Star Name21the Lyr
Skymap Number19160080
Henry Draper (HD) Number180809
Harvard Revised (HR) Number7314
SAO Number68065
Durchmusterung (DM) NumberBD+37 3398
Washington Double Stars (WDS) Number
19164+3808
Positional Data
Position and Proper Motion (PPM) Number82611
Right Ascension (RA) J200019h 16m 22.095s
Declination (Dec) J2000+38° 8' 1.431"
Position Uncertainty0.0056s
Proper Motion in RA (J2000)/cos(Dec)-0.00004
Proper Motion in Dec (J2000)+0.001266
Radial Velocity-030.9km s-1
Trigonometric Parallax+0.00424s
Trigonometric Parallax Uncertainty0.00049s
GCI Unit Vector in X (J2000)0.257277
GCI Unit Vector in Y (J2000)-0.743306
GCI Unit Vector in Z (J2000)0.617499
Galactic Longitude69.90°
Galactic Latitude
11.86°
Observational Data
Observed Visual Magnitude (V)4.34
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude5.59
Observed B-V Colour+1.252
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 Magnitude4.5
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeK0II
One-Dimensional Spectral ClassK0
Position Angle74
Year of Observation1963. 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 13:15:45 GMT+01:00 2001
 
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