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Ursids Result (2007)

Although the actvitiy level peak was clear, observed peak with 0.5 ±0.3 was around usual activity level (= 0.0±0.4).

Activity Level (using worldwide data)

Observed Peaks

Time(UT) Solar Long. Activity Level
Dec. 22nd 19h 270°.459 0.55 ± 0.35

Estimated Compornents of Geminid activity

Comp.-No. Peak Time(UT) Solar Long. A(max) FWHM(hr)
URS07C01 Dec. 22nd 19h30m 270°.459 0.5 -4.0/+3.0

Parameter

  • Radiant : α = 217°, δ = +76°
  • Radian Elevation : 25° < h < 70°
  • Using data within ± 0.75 σ in all observed data.

Reference

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