Geminids Meteor Shower (Peak Time and Condition)

2021-03-09

Geminids is one of the great meteor showers in a year. Under the good condtion night, a lot of meteors more than 500 in a night were presented. Usually, HR(Hourly Rate) is around 40 – 60.
Radio Meteor Observation is also abele to see a lot of meteor echoes. The maximum (λ_⊙=262°.0) by radio meteor observation is earlier than visual observation (λ_⊙=262°.2).

Contents

1. Information of Geminids
- 1.1. Reference and Useful Links
2. Conditions in the future (2021-2025) for Radio Meteor Observations
- 2.1. Conditions in North America
- 2.2. Conditions in Other region
3. Results of Geminids by Radio Meteor Observations

Information of Geminids

Name (code)		Geminids (004 GEM)
Active	Visual(IMO)	Dec.4^th – Dec.17^th
Active	Radio(IPRMO)	Dec.9^th – Dec.16^th
Maximum	Visual(IMO)	λ_⊙=262°.2
Maximum	Radio(IPRMO)	λ_⊙=262°.0
Radiant		α = 112° / δ = +33°
feature		ZHR(max):120, r=2.6, V_∞:35km/s Radio) Maximum Activity Level=3.5 FWHM:-1°.3/+0°.5
Parant Comet		(3200)Phaethon

Reference and Useful Links

– 2021 Meteor Shower Calendar (International Meteor Organization)
– A new Working List of meteor showers (Rainer Arlt et al), WGN 34:3(2006)
– Meteor Shower Workbook 2014 (J.Rendtel) ? International Meteor Organization (2014)
– Major and Daytime Meteor Showers using Radio Meteor Observation in the World covering the period 2001-2016(H.Ogawa and C.Steyaert), WGN 45:4(2017)
– The American Meteor Society (AMS)

Conditions in the future (2021-2025) for Radio Meteor Observations

Below lists are observig conditions for radio meteor observers in 2021, 2022, 2023, 2024 and 2025. This is listed for radio observers (NOT for visual observers). You can see visual observing conditions as following AMS site.
Conditions for Visual Observers (by AMS)

Conditions in North America

Time : Standard Time

Year	Peak Time and Condition (λ_⊙=262°.2)					Comments for Radio Obs.
Year	AST(ADT)	EST(EDT)	CST(CDT)	MST(MDT)	PST(PDT)	Comments for Radio Obs.
Year	Peak Time and Condition (λ_⊙=262°.2)
2021	Dec 14^th 03^h	Dec 14^th 02^h	Dec 14^th 01^h	Dec 14^th 00^h	Dec 13^th 23^h	under best condition
2022	Dec 14^th 09^h	Dec 14^th 08^h	Dec 14^th 07^h	Dec 14^th 06^h	Dec 14^th 05^h	western is better condition
2023	Dec 14^th 15^h	Dec 14^th 14^h	Dec 14^th 13^h	Dec 14^th 12^h	Dec 14^th 11^h	radiant under horizon
2024	Dec 13^th 21^h	Dec 13^th 20^h	Dec 13^th 19^h	Dec 13^th 18^h	Dec 13^th 17^h	better condition in eastern
2025	Dec 14^th 03^h	Dec 14^th 02^h	Dec 14^th 01^h	Dec 14^th 00^h	Dec 13^th 23^h	under best condition

Major cities (example)
AST(Halifox, etc.), EST(NewYork,Ottawa, etc.), CST(Cicago, etc.), MST(Denver, etc.), PST(LosAngeles, etc.)

Conditions in Other region

Time : Standard Time (NOT daylight-saving time)

Year	Peak Time and Condition (λ_⊙=262°.2)				Comments for Radio Obs.
Year	GMT(UK)	CET(Italy)	IST(India)	JST(Japan)	Comments for Radio Obs.
Year	Peak and Condition (λ_⊙=262°.2)
2021	Dec 14^th 07^h	Dec 14^th 08^h	Dec 14^th 12^h	Dec 14^th 16^h	West Europe is better
2022	Dec 14^th 13^h	Dec 14^th 14^h	Dec 14^th 18^h	Dec 14^th 22^h	better condition in East Asia
2023	Dec 14^th 19^h	Dec 14^th 20^h	Dec 15^th 00^h	Dec 15^th 04^h	best condition in all Asia
2024	Dec 14^th 01^h	Dec 14^th 02^h	Dec 14^th 06^h	Dec 14^th 10^h	best condition in Europe
2025	Dec 14^th 07^h	Dec 14^th 08^h	Dec 14^th 12^h	Dec 14^th 16^h	better condition in west Europe

GMT:United Kingdom, CET:Itarly, IST:India, JST:Japan

Results of Geminids by Radio Meteor Observations

Result of Geminids is recorded by worldwide radio meteor observers.
Result of Geminids

Posted by h-ogawa