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Ursids Result (2013)

Ursids 2013 was similar reslut as 2011. There was no clear activity. Almost of calculated results were included in background level (0.0±0.4). The peak time was around λo=270°.4.

Activity Level (using worldwide data)

Observed Peaks

Time(UT) Solar Long. Activity Level
Dec. 22nd 07h 270°.415 0.29 ± 0.22

Estimated Compornents of Geminid activity

Comp.-No. Peak Time(UT) Solar Long. A(max) FWHM(hr)
URS13C01 Dec. 22nd 07h30m 270°.415 0.3 -1.0/+1.0

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