Astronomy
Constellations - Taurus - 81 Tau

 
Identification Data
Common Name
ConstellationTaurus
Star Name81 Tau
Skymap Number4300119
Henry Draper (HD) Number28546
Harvard Revised (HR) Number1428
SAO Number93978
Durchmusterung (DM) NumberBD+15 639
Washington Double Stars (WDS) Number
04306+1542
Positional Data
Position and Proper Motion (PPM) Number119971
Right Ascension (RA) J20004h 30m 38.889s
Declination (Dec) J2000+15° 41' 30.765"
Position Uncertainty0.0120s
Proper Motion in RA (J2000)/cos(Dec)+0.00721
Proper Motion in Dec (J2000)-0.024366
Radial Velocity+039.2km s-1
Trigonometric Parallax+0.02255s
Trigonometric Parallax Uncertainty0.00109s
GCI Unit Vector in X (J2000)0.365904
GCI Unit Vector in Y (J2000)0.890485
GCI Unit Vector in Z (J2000)0.270464
Galactic Longitude180.82°
Galactic Latitude
-21.75°
Observational Data
Observed Visual Magnitude (V)5.46
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.004
Observed B Magnitude5.73
Observed B-V Colour+0.267
Observed B Magnitude or (B-V) Magnitude Uncertainty0.005
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.5
Observed Photographic Magnitude5.8
Morgan Keenan (MK) Spectral TypeA5m
One-Dimensional Spectral ClassA5
Position Angle339
Year of Observation1919. 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 13:15:51 GMT+01:00 2001