Astronomy
Constellations - Taurus - 121 Tau

 
Identification Data
Common Name
ConstellationTaurus
Star Name121 Tau
Skymap Number5350119
Henry Draper (HD) Number36819
Harvard Revised (HR) Number1875
SAO Number77285
Durchmusterung (DM) NumberBD+23 954
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number94529
Right Ascension (RA) J20005h 35m 27.130s
Declination (Dec) J2000+24° 2' 22.520"
Position Uncertainty0.0101s
Proper Motion in RA (J2000)/cos(Dec)+0.00109
Proper Motion in Dec (J2000)-0.020266
Radial Velocity+020.4km s-1
Trigonometric Parallax+0.00544s
Trigonometric Parallax Uncertainty0.00090s
GCI Unit Vector in X (J2000)0.097633
GCI Unit Vector in Y (J2000)0.908030
GCI Unit Vector in Z (J2000)0.407368
Galactic Longitude182.96°
Galactic Latitude
-4.52°
Observational Data
Observed Visual Magnitude (V)5.38
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude5.29
Observed B-V Colour-0.095
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 Magnitude5.3
Observed Photographic Magnitude5.1
Morgan Keenan (MK) Spectral TypeB2.5IV
One-Dimensional Spectral ClassB3
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))

 
Page compiled: Sun Sep 02 13:15:51 GMT+01:00 2001