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Astronomy
Constellations - Gemini - 4 Gem

 
Identification Data
Common Name
ConstellationGemini
Star Name4 Gem
Skymap Number6100129
Henry Draper (HD) Number42216
Harvard Revised (HR) Number
SAO Number78063
Durchmusterung (DM) NumberBD+23 1232
Washington Double Stars (WDS) Number
06105+2300
Positional Data
Position and Proper Motion (PPM) Number95547
Right Ascension (RA) J20006h 10m 29.938s
Declination (Dec) J2000+22° 59' 52.410"
Position Uncertainty0.0135s
Proper Motion in RA (J2000)/cos(Dec)-0.00044
Proper Motion in Dec (J2000)-0.001667
Radial Velocity-005.0km s-1
Trigonometric Parallax+0.00382s
Trigonometric Parallax Uncertainty0.00128s
GCI Unit Vector in X (J2000)-0.042155
GCI Unit Vector in Y (J2000)0.919554
GCI Unit Vector in Z (J2000)0.390697
Galactic Longitude187.94°
Galactic Latitude
1.87°
Observational Data
Observed Visual Magnitude (V)6.88
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.007
Observed B Magnitude6.80
Observed B-V Colour-0.079
Observed B Magnitude or (B-V) Magnitude Uncertainty0.007
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude6.7
Observed Photographic Magnitude6.7
Morgan Keenan (MK) Spectral TypeB9:V
One-Dimensional Spectral ClassB9
Position Angle226
Year of Observation1993. 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))

 
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Page compiled: Sun Sep 02 13:15:41 GMT+01:00 2001
 
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