Astronomy
Constellations - Taurus - 99 Tau

 
Identification Data
Common Name
ConstellationTaurus
Star Name99 Tau
Skymap Number4570138
Henry Draper (HD) Number31553
Harvard Revised (HR) Number1586
SAO Number76858
Durchmusterung (DM) NumberBD+23 777
Washington Double Stars (WDS) Number
04578+2357
Positional Data
Position and Proper Motion (PPM) Number93923
Right Ascension (RA) J20004h 57m 48.647s
Declination (Dec) J2000+23° 56' 54.824"
Position Uncertainty0.0126s
Proper Motion in RA (J2000)/cos(Dec)+0.00019
Proper Motion in Dec (J2000)-0.009466
Radial Velocity+003.9km s-1
Trigonometric Parallax+0.00692s
Trigonometric Parallax Uncertainty0.00103s
GCI Unit Vector in X (J2000)0.244959
GCI Unit Vector in Y (J2000)0.880470
GCI Unit Vector in Z (J2000)0.405916
Galactic Longitude178.10°
Galactic Latitude
-11.65°
Observational Data
Observed Visual Magnitude (V)5.81
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.004
Observed B Magnitude6.90
Observed B-V Colour+1.085
Observed B Magnitude or (B-V) Magnitude Uncertainty0.009
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude6.0
Observed Photographic Magnitude7.0
Morgan Keenan (MK) Spectral TypegG8
One-Dimensional Spectral ClassK0
Position Angle6
Year of Observation1938. 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