Result of Leonids (2009)
Leonids 2009 was expected by many osbervers since many researchers published its predictions. The predicted peak time was around 22h(UT) on 17th.
The main peak was over around 21h(UT) on 17th with A(t)=2.9. This peak had a narrow FWHM such as 1 - 1.5 hours. Besides, some sub-peak and base-activity compornents were observed.
The estimated ZHR using radio meteor osebervations was ZHRR=43 (main peak).
Activity Graph (using worldwide data)
|Time(UT)||Solar Long.||Activity Level|
|Nov.15 16h||233°.309||0.72 ± 0.37|
|Nov.17 21h||235°.536||2.93 ± 0.53|
|Nov.18 21h||236°.545||1.64 ± 0.73|
Estimated Compornents of Leonids activity
|Comp.-No.||Peak Time(UT)||Solar Long.||A(max)||FWHM(hr)|
|LEO09C01||Nov.15 18h30m||233°.393||0.5||-2.5 / +1.0|
|LEO09C02||Nov.17 21h30m||235°.536||2.5||-1.5 / +1.0|
|LEO09C03||Nov.18 21h30m||236°.545||1.0||-1.0 / +2.0|
|LEO09C04||Nov.17 14h||235°.2||0.5||-24.0 / +24.0|
- 15° < R.P. < 80°
- Structure of meteor activity is estimated by "Lorentz profile".
- Observed data provided by RMOJ and RMOB