Astronomy
Constellations - Columba - eta Col

 
Identification Data
Common Name
ConstellationColumba
Star Nameeta Col
Skymap Number5590022
Henry Draper (HD) Number40808
Harvard Revised (HR) Number2120
SAO Number217650
Durchmusterung (DM) NumberCD-42 2266
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number310277
Right Ascension (RA) J20005h 59m 8.805s
Declination (Dec) J2000-42° 48' 54.488"
Position Uncertainty0.0060s
Proper Motion in RA (J2000)/cos(Dec)+0.00168
Proper Motion in Dec (J2000)-0.011566
Radial Velocity+017.0km s-1
Trigonometric Parallax+0.00614s
Trigonometric Parallax Uncertainty0.00052s
GCI Unit Vector in X (J2000)0.002731
GCI Unit Vector in Y (J2000)0.733545
GCI Unit Vector in Z (J2000)-0.679635
Galactic Longitude249.46°
Galactic Latitude
-27.23°
Observational Data
Observed Visual Magnitude (V)3.94
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude5.08
Observed B-V Colour+1.144
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 Magnitude4.0
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeK0III
One-Dimensional Spectral ClassK0
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 13:15:38 GMT+01:00 2001