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Ursids Result (2015)

In 2015, the Ursid clear activity was not caught. This is becase the observed peak was around 0.2 and estimated peak was 0.1. This means it was background level with 0.0±0.4.

Activity Level (using worldwide data)

Observed Peaks

Time(UT) Solar Long. Activity Level
Dec. 22nd 00h 270°.109 0.20 ± 0.13

Estimated Compornents of Geminid activity

Comp.-No. Peak Time(UT) Solar Long. A(max) FWHM(hr)
URS15C01 Dec. 22nd 22h30m 270°.534 0.1 -6.0/+6.0

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