Astronomy
Constellations - Orion - 28eta Ori

 
Identification Data
Common Name
ConstellationOrion
Star Name28eta Ori
Skymap Number5240078
Henry Draper (HD) Number35411
Harvard Revised (HR) Number1788
SAO Number132071
Durchmusterung (DM) NumberSD-02 1235
Washington Double Stars (WDS) Number
05245-0224
Positional Data
Position and Proper Motion (PPM) Number188024
Right Ascension (RA) J20005h 24m 28.616s
Declination (Dec) J2000-2° 23' 49.726"
Position Uncertainty0.0107s
Proper Motion in RA (J2000)/cos(Dec)-0.00004
Proper Motion in Dec (J2000)-0.003267
Radial Velocity+019.8km s-1
Trigonometric Parallax+0.00362s
Trigonometric Parallax Uncertainty0.00088s
GCI Unit Vector in X (J2000)0.154244
GCI Unit Vector in Y (J2000)0.987147
GCI Unit Vector in Z (J2000)-0.041826
Galactic Longitude204.87°
Galactic Latitude
-20.39°
Observational Data
Observed Visual Magnitude (V)3.39
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.009
Observed B Magnitude3.22
Observed B-V Colour-0.171
Observed B Magnitude or (B-V) Magnitude Uncertainty0.012
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude3.4
Observed Photographic Magnitude3.2
Morgan Keenan (MK) Spectral TypeB1V+B2e
One-Dimensional Spectral ClassB1
Position Angle78
Year of Observation1989. 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 13:15:46 GMT+01:00 2001