Astronomy
Constellations - Vulpecula - 31 Vul

 
Identification Data
Common Name
ConstellationVulpecula
Star Name31 Vul
Skymap Number20520027
Henry Draper (HD) Number198809
Harvard Revised (HR) Number7995
SAO Number89228
Durchmusterung (DM) NumberBD+26 4017
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number112044
Right Ascension (RA) J200020h 52m 7.678s
Declination (Dec) J2000+27° 5' 49.126"
Position Uncertainty0.0068s
Proper Motion in RA (J2000)/cos(Dec)-0.00542
Proper Motion in Dec (J2000)-0.061066
Radial Velocity+001.0km s-1
Trigonometric Parallax+0.01506s
Trigonometric Parallax Uncertainty0.00060s
GCI Unit Vector in X (J2000)0.607504
GCI Unit Vector in Y (J2000)-0.650739
GCI Unit Vector in Z (J2000)0.455498
Galactic Longitude71.31°
Galactic Latitude
-10.98°
Observational Data
Observed Visual Magnitude (V)4.57
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude5.40
Observed B-V Colour+0.832
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 Magnitude4.8
Observed Photographic Magnitude5.5
Morgan Keenan (MK) Spectral TypeG7IIIFe-1
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 13:15:53 GMT+01:00 2001