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Geminids Result(2009)

2009 Geminids showed the high actvitiy since 2005. The high activity level such as more than 3.0 were kept between 11h - 21h on 13th (UT). FWHM was same as annual year. On the other hand, the peak time was earlier than anual visual observed time.

Activity Level (using worldwide data)

Geminids

Observed Peaks

Time(UT) Solar Long. Activity Level
Dec.13th 11h 261°.452 3.70 ± 0.80
Dec.13th 19h 261°.791 3.46 ± 1.50

Estimated Compornents of Geminid activity

Trail-No. Peak Time(UT) Solar Long. A(max) FWHM(hr)
GEM09C01 Dec.13th 19h00m 261°.791 3.5 -24.0/+12.0

Parameter

  • Radiant : α = 112°.0, δ = +32°.0
  • Radian Elevation : 25° < h < 65°
  • Using data within ± 0.80 σ in all observed data.

Reference

  • Structure of meteor activity is estimated by "Lorentz profile".
  • Observed data provided by RMOJ and RMOB