Astronomy
Constellations - Boötes - 31 Boo

 
Identification Data
Common Name
ConstellationBoötes
Star Name31 Boo
Skymap Number14410097
Henry Draper (HD) Number129312
Harvard Revised (HR) Number5480
SAO Number120601
Durchmusterung (DM) NumberBD+08 2903
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number160871
Right Ascension (RA) J200014h 41m 38.750s
Declination (Dec) J2000+8° 9' 42.350"
Position Uncertainty0.0083s
Proper Motion in RA (J2000)/cos(Dec)-0.00069
Proper Motion in Dec (J2000)+0.003366
Radial Velocity-021.8km s-1
Trigonometric Parallax+0.00566s
Trigonometric Parallax Uncertainty0.00082s
GCI Unit Vector in X (J2000)-0.753696
GCI Unit Vector in Y (J2000)-0.641706
GCI Unit Vector in Z (J2000)0.141968
Galactic Longitude2.05°
Galactic Latitude
57.76°
Observational Data
Observed Visual Magnitude (V)4.86
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude5.86
Observed B-V Colour+1.000
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 Magnitude5.0
Observed Photographic Magnitude5.8
Morgan Keenan (MK) Spectral TypeG7IIIa
One-Dimensional Spectral ClassG5
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 13:15:34 GMT+01:00 2001