Results of Daytime Arietids/ζ-Perseids

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Since Daytime Arietids and ζ-Perseids show ctivities in the same period, it is difficult to separate them. In this research, therefore, try to estimate two compornents. Their activities show the strongest activity level in all daytime meteor showers.

Results of Daytime Arietids/ζ-Perseids every year

YearSourceResult
2020WorldWideHigher activity level around λ=84°-88° and around λ=75°
2019WorldWideActivity level was as same as annual year.
2018WorldWideAlthough esitmated profile was same as annual, λ=79°-81° was stronger.
2017WorldWideActivity level was as same as annual year.
2016– (not enough data in the world)
2015WorldWideEstimated peak time and activity level were same profile as annual year.
2014WorldWideStronger activity. The peak time was same as annual year.
2013WorldWideActivity Level around λ=79° was weaker than annual.
2012WorldWideActivity Level was stronger than annual year.
2011WorldWideThe weaker activity than annual year.
2010WorldWideActivity level was as same as annual year.
2009WorldWideStrong activity. The clear activity was long time (λ=76°-86°).
2008WorldWideActivity level was as same as annual year. (similar activity profile as 2006)
2007WorldWideThe clear activity between λ=78° and 84°.
2006WorldWideActivity level was as same as annual year. Around λ=84°.0, was weak.
2005
2004
2003
2002MisatoTwo peaks were observed on 9th and 18th in June.
2001MisatoPeak was observed around 9th June. Another peak in PM was observed.
2000MisatoPeak was around 9th June. This clear activity was end of 16th.

Long Term Activity Profile

icon Using Parameters of Daytime Arietids

annual variation

sourceSolar LongitudeFWHMPeak Activity Level
2006-202078°.6-4°.6 / +9°.21.1
2006-201578°.6-4°.8 / +9°.41.2
2011-201979°.0-5°.0 / +8°.61.1

icon Using Parameters of ζ Perseids

annual variation

sourceSolar LongitudeFWHMPeak Activity Level
2006-202078°.4-4°.2 / +9°.41.0
2006-201578°.4-4°.8 / +10°.21.0
2011-201978°.8-5°.0 / +10°.60.9

Discussion of separating between Daytime Arietids and ζ-Perseids

The following graph shows the separation of Long term activity profile(2006-2020). One is Comp-A(Orange-line). Another is Comp-B(Blue-line). Lotentz(red-line) is total activity profile (Comp-A + Comp-B).

icon Using Parameters of Daytime Arietids

annual variation

sourceCompornetSolar LongitudeFWHMPeak Activity Level
2006-2020Comp-Aλ=78°.0-4°.0 / +6°.20.9
Comp-Bλ=84°.8-6°.2 / +3°.80.4

icon Using Parameters of ζ Perseids

annual variation

sourceCompornetSolar LongitudeFWHMPeak Activity Level
2006-2020Comp-Aλ=77°.4-3°.4 / +7°.00.7
Comp-Bλ=84°.8-7°.8 / +4°.00.4

icon Disucussion Points
The discussion point is “What does two compornents mean ?”. IMO publications says that they have similar maximum peak times and radiant points. It is difficult to separate these compornents.
In this project, provisionally, Comp-A using Arietids parmeters is as Daytime Arietids (171 ARI) and Comp-B using ζ Perseids parameters is Daytime ζ-Perseids (172 ZPE). However, we need to discuss about “What does two compornents mean ?”.

Information

icon Introduction of Arietids
icon Introduction of ζ-Perseids