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Quadrantids Results(2015)

Quadrantids in 2015 showed the weak activity such as 2010. The maximum activity level did not reach for three. The activty profile was estimated by two observed peaks. It is possible that activity level was less than estimated peak.

Activity Level (using worldwide data)

Observed Peaks

Time(UT) Solar Long. Activity Level
Jan. 3 21h 282°.976 2.34 ± 0.32
Jan. 4 04h 283°.273 2.04 ± 0.61

Estimated Compornents of Quadrantid activity

Comp.No. Peak Time(UT) Solar Long. A(max) FWHM(hr)
QUA15C01 Jan. 3 23h30m 283°.061 3.0 -6.0/+6.0

Parameter

  • Radiant : α = 230°.1, δ = +48°.5
  • Radian Elevation : 20° < h < 75°
  • Using data within ± 0.50 σ in all observed data.

Reference

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