The Result of Daytime Sextantids


Sextantids shows activity around 27th September (λ=184°.3) by International Meteor Organization(IMO). Long term activity profile using Radio Meteor Observations (this project) caught this activity around λ=188°.8 (peak time was later than IMO data). On the other hand, however, estimated activity level (Activity Level=0.3) was weaker comparing with background level(background level = 0.0±0.4). Therefore it has a possibility to change estimated profile data.

Results of Sextantids every year

2019WorldWideStronger activity around λ=187°.5 – 189°.
2018WorldWideActivity level was same as annual year. The estimated peak was λ=188°.
2017WorldWideActivity level was same as annual year. The estimated peak was λ=188°.5.
2016WorldWideWeaker activity level than annual year. Activity profile was unclear.
2015WorldWideWeak activity. Activity level was same as daily background activity.
2014WorldWideThe higher activity level around λ=188°.5.
2013WorldWideThe main activity was later, around λ=188°.5 – 190°.
2012WorldWideVery weak activity. It was impossible to see the activity.
2011WorldWideActivity Level was higher. The clear activity was around λ=187° – 189°.
2010WorldWideCalculated data had a wide error-bars. Peak was around λ=187°.5 ?
2009WorldWideThe activity level was same as background activity. (λ=186°.8 ?)
2008WorldWideMain activity was around λ=187°-190°. Activity level was same as annual.
2007WorldWideWeaker activity. The peak was around λ=188°.5.
2006WorldWideThe activity was weak. Estimaetd peak activity was λ=188°.5. (not clear)
2005WorldWideHigher activity level was observed around λ=188°.

Long Term Activity Profile

annual variation of 221 DSX

sourceSolar LongitudeFWHMPeak Activity Level
2005-2019188°.8-2°.1 / +2°.20.3
2005-2015189°.0-2°.3 / +1°.80.3
2010-2019189°.0-2°.2 / +2°.20.3

Information of Daytime Sextantids

icon Introduction of Daytime Sextantids