Astronomy
Constellations - Orion - 31 Ori

 
Identification Data
Common Name
ConstellationOrion
Star Name31 Ori
Skymap Number5290137
Henry Draper (HD) Number36167
Harvard Revised (HR) Number1834
SAO Number132176
Durchmusterung (DM) NumberBD-01 913
Washington Double Stars (WDS) Number
05297-0106
Positional Data
Position and Proper Motion (PPM) Number175866
Right Ascension (RA) J20005h 29m 43.981s
Declination (Dec) J2000-1° 5' 32.060"
Position Uncertainty0.0077s
Proper Motion in RA (J2000)/cos(Dec)+0.00001
Proper Motion in Dec (J2000)-0.026166
Radial Velocity+007.5km s-1
Trigonometric Parallax+0.00715s
Trigonometric Parallax Uncertainty0.00080s
GCI Unit Vector in X (J2000)0.131657
GCI Unit Vector in Y (J2000)0.991112
GCI Unit Vector in Z (J2000)-0.019062
Galactic Longitude204.31°
Galactic Latitude
-18.62°
Observational Data
Observed Visual Magnitude (V)4.70
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude6.27
Observed B-V Colour+1.570
Observed B Magnitude or (B-V) Magnitude Uncertainty0.006
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.0
Observed Photographic Magnitude6.9
Morgan Keenan (MK) Spectral TypeK5III
One-Dimensional Spectral ClassK5
Position Angle87
Year of Observation1962. 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