Astronomy
Constellations - Tucana - eta Tuc

 
Identification Data
Common Name
ConstellationTucana
Star Nameeta Tuc
Skymap Number23570102
Henry Draper (HD) Number224392
Harvard Revised (HR) Number9062
SAO Number255609
Durchmusterung (DM) NumberCP-64 4391
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number366716
Right Ascension (RA) J200023h 57m 35.077s
Declination (Dec) J2000-64° 17' 53.632"
Position Uncertainty0.0056s
Proper Motion in RA (J2000)/cos(Dec)+0.01212
Proper Motion in Dec (J2000)-0.061166
Radial Velocity+032.5km s-1
Trigonometric Parallax+0.02053s
Trigonometric Parallax Uncertainty0.00051s
GCI Unit Vector in X (J2000)0.433663
GCI Unit Vector in Y (J2000)-0.004571
GCI Unit Vector in Z (J2000)-0.901064
Galactic Longitude312.34°
Galactic Latitude
-51.84°
Observational Data
Observed Visual Magnitude (V)5.00
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude5.06
Observed B-V Colour+0.055
Observed B Magnitude or (B-V) Magnitude Uncertainty0.002
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.1
Observed Photographic Magnitude5.2
Morgan Keenan (MK) Spectral TypeA1V
One-Dimensional Spectral ClassA2
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