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Astronomy
Constellations - Perseus - 40 Per

 
Identification Data
Common Name
ConstellationPerseus
Star Name40 Per
Skymap Number3420057
Henry Draper (HD) Number22951
Harvard Revised (HR) Number1123
SAO Number56646
Durchmusterung (DM) NumberBD+33 698
Washington Double Stars (WDS) Number
03424+3358
Positional Data
Position and Proper Motion (PPM) Number68705
Right Ascension (RA) J20003h 42m 22.646s
Declination (Dec) J2000+33° 57' 54.095"
Position Uncertainty0.0114s
Proper Motion in RA (J2000)/cos(Dec)+0.00035
Proper Motion in Dec (J2000)-0.005266
Radial Velocity+022.3km s-1
Trigonometric Parallax+0.00353s
Trigonometric Parallax Uncertainty0.00088s
GCI Unit Vector in X (J2000)0.468639
GCI Unit Vector in Y (J2000)0.684285
GCI Unit Vector in Z (J2000)0.558687
Galactic Longitude158.93°
Galactic Latitude
-16.70°
Observational Data
Observed Visual Magnitude (V)4.98
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude4.93
Observed B-V Colour-0.051
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 Magnitude5.0
Observed Photographic Magnitude4.8
Morgan Keenan (MK) Spectral TypeB0.5V
One-Dimensional Spectral ClassB2
Position Angle238
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))

 
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Page compiled: Sun Sep 02 13:15:47 GMT+01:00 2001
 
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