Astronomy
Constellations - Orion - 55 Ori

 
Identification Data
Common Name
ConstellationOrion
Star Name55 Ori
Skymap Number5510078
Henry Draper (HD) Number39291
Harvard Revised (HR) Number2031
SAO Number132591
Durchmusterung (DM) NumberSD-07 1187
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number188526
Right Ascension (RA) J20005h 51m 21.983s
Declination (Dec) J2000-7° 31' 4.811"
Position Uncertainty0.0078s
Proper Motion in RA (J2000)/cos(Dec)+0.00005
Proper Motion in Dec (J2000)-0.000266
Radial Velocity+020.0km s-1
Trigonometric Parallax+0.00194s
Trigonometric Parallax Uncertainty0.00079s
GCI Unit Vector in X (J2000)0.037339
GCI Unit Vector in Y (J2000)0.990700
GCI Unit Vector in Z (J2000)-0.130838
Galactic Longitude212.89°
Galactic Latitude
-16.76°
Observational Data
Observed Visual Magnitude (V)5.35
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.004
Observed B Magnitude5.15
Observed B-V Colour-0.196
Observed B Magnitude or (B-V) Magnitude Uncertainty0.004
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.3
Observed Photographic Magnitude5.2
Morgan Keenan (MK) Spectral TypeB2IV-V
One-Dimensional Spectral ClassB3
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 13:15:46 GMT+01:00 2001