Astronomy
Constellations - Crux - eta Cru

 
Identification Data
Common Name
ConstellationCrux
Star Nameeta Cru
Skymap Number12060106
Henry Draper (HD) Number105211
Harvard Revised (HR) Number4616
SAO Number251742
Durchmusterung (DM) NumberCP-63 2145
Washington Double Stars (WDS) Number
12069-6437
Positional Data
Position and Proper Motion (PPM) Number359197
Right Ascension (RA) J200012h 6m 52.899s
Declination (Dec) J2000-64° 36' 49.428"
Position Uncertainty0.0055s
Proper Motion in RA (J2000)/cos(Dec)+0.00533
Proper Motion in Dec (J2000)-0.037566
Radial Velocity+009.0km s-1
Trigonometric Parallax+0.05079s
Trigonometric Parallax Uncertainty0.00051s
GCI Unit Vector in X (J2000)-0.428525
GCI Unit Vector in Y (J2000)-0.012871
GCI Unit Vector in Z (J2000)-0.903438
Galactic Longitude298.18°
Galactic Latitude
-2.15°
Observational Data
Observed Visual Magnitude (V)4.14
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude4.49
Observed B-V Colour+0.348
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 Magnitude3.8
Observed Photographic Magnitude4.6
Morgan Keenan (MK) Spectral TypeF2III
One-Dimensional Spectral ClassF0
Position Angle299
Year of Observation1918. 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