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Astronomy
Constellations - Taurus - 23 Tau (Merope)

 
Identification Data
Common NameMerope
ConstellationTaurus
Star Name23 Tau
Skymap Number3460042
Henry Draper (HD) Number23480
Harvard Revised (HR) Number1156
SAO Number76172
Durchmusterung (DM) NumberBD+23 522
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number92859
Right Ascension (RA) J20003h 46m 19.573s
Declination (Dec) J2000+23° 56' 54.090"
Position Uncertainty0.0094s
Proper Motion in RA (J2000)/cos(Dec)+0.00154
Proper Motion in Dec (J2000)-0.042766
Radial Velocity+006.2km s-1
Trigonometric Parallax+0.00908s
Trigonometric Parallax Uncertainty0.00104s
GCI Unit Vector in X (J2000)0.503336
GCI Unit Vector in Y (J2000)0.762815
GCI Unit Vector in Z (J2000)0.405913
Galactic Longitude166.57°
Galactic Latitude
-23.75°
Observational Data
Observed Visual Magnitude (V)4.17
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude4.12
Observed B-V Colour-0.054
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 Magnitude4.3
Observed Photographic Magnitude4.1
Morgan Keenan (MK) Spectral TypeB6IVe
One-Dimensional Spectral ClassB5
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))

 
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Page compiled: Sun Sep 02 13:15:50 GMT+01:00 2001
 
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