Using incompatible fireball camera systems to find meteorites &amp;#8211; towards a data exchange standard

Rowe, Jim; Daly, Luke; McMullan, Sarah; Devillepoix, Hadrien A. R.; Collins, G. S.; Suttle, M. D.; Chan, Queenie H. S.; Young, John; Shaw, Clive; Mardon, A.; Alexander, Mike; Tate, Jonathan; Cupák, Martin; Campbell‐Burns, Peter; Kacerek, Richard; Joy, Katherine H.; Christou, Apostolos; Horák, Jana; Shepherd, Jamie; Colas, François

doi:10.5194/epsc2020-856

Cited by 2 publications

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“…This validates the need for standard data exchange procedures, as proposed by Rowe et al. (2020), to enable a quick turnaround time from the time the fireball happens to when a fall area is calculated.…”

Section: Discussionsupporting

confidence: 75%

“…• The analysis of the Winchcombe fireball involved five independent optical observation networks. This validates the need for standard data exchange procedures, as proposed by Rowe et al (2020), to enable a quick turnaround time from the time the fireball happens to when a fall area is calculated. Note: The entry angle is reference to the horizontal.…”

Section: Discussionsupporting

confidence: 69%

“…After the fall, all astrometry and photometry measurements produced by individual networks were mutually exchanged through the Global Fireball Exchange format (Rowe et al., 2020). Standard specifications are documented at https://github.com/UKFAll/standard, and the full final measurements are given in Supplementary materials in this format.…”

Section: Methodsmentioning

confidence: 99%

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The Winchcombe fireball—That lucky survivor

McMullan

Vida

Devillepoix

et al. 2023

Meteorit & Planetary Scien

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On February 28, 2021, a fireball dropped ∼0.6 kg of recovered CM2 carbonaceous chondrite meteorites in South‐West England near the town of Winchcombe. We reconstruct the fireball's atmospheric trajectory, light curve, fragmentation behavior, and pre‐atmospheric orbit from optical records contributed by five networks. The progenitor meteoroid was three orders of magnitude less massive (∼13 kg) than any previously observed carbonaceous fall. The Winchcombe meteorite survived entry because it was exposed to a very low peak atmospheric dynamic pressure (∼0.6 MPa) due to a fortuitous combination of entry parameters, notably low velocity (13.9 km s−1). A near‐catastrophic fragmentation at ∼0.07 MPa points to the body's fragility. Low entry speeds which cause low peak dynamic pressures are likely necessary conditions for a small carbonaceous meteoroid to survive atmospheric entry, strongly constraining the radiant direction to the general antapex direction. Orbital integrations show that the meteoroid was injected into the near‐Earth region ∼0.08 Myr ago and it never had a perihelion distance smaller than ∼0.7 AU, while other CM2 meteorites with known orbits approached the Sun closer (∼0.5 AU) and were heated to at least 100 K higher temperatures.

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Section: Discussionsupporting

confidence: 75%

Section: Discussionsupporting

confidence: 69%

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The Winchcombe fireball—That lucky survivor

McMullan

Vida

Devillepoix

et al. 2023

Meteorit & Planetary Scien

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“…In the UK, the UK Fireball Alliance (UKFAll) was created in 2018 to enable the six fireball networks (The UK Fireball Network [UKFN; part of the Global Fireball Observatory], the SCAMP network [part of the French Fireball Recovery and InterPlanetary Observation Network (FRIPON)], UK Meteor Observation Network [UKMON], NEMETODE, All Sky7, and the Global Meteor Network) active in the country to collaborate and share data. It currently consists of over 160 cameras and covers most of the UK (https://www.ukfall.org.uk/; McCullen et al., 2023 [this volume]; Rowe et al., 2020). Although the UK is surrounded by sea and is blessed with notoriously cloudy skies, around three potential meteorites >100 g are observed to fall across Western Europe every year (Colas et al., 2020) and UKFAll was established to help coordinate the recovery of such new falls.…”

Section: Introductionmentioning

confidence: 99%

Recovery and curation of the Winchcombe (CM2) meteorite

Russell

King

Bates

et al. 2023

Meteorit & Planetary Scien

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The Winchcombe meteorite fell on February 28, 2021 and was the first recovered meteorite fall in the UK for 30 years, and the first UK carbonaceous chondrite. The meteorite was widely observed by meteor camera networks, doorbell cameras, and eyewitnesses, and 213.5 g (around 35% of the final recovered mass) was collected quickly—within 12 h—of its fall. It, therefore, represents an opportunity to study very pristine extra‐terrestrial material and requires appropriate careful curation. The meteorite fell in a narrow (600 m across) strewn field ~8.5 km long and oriented approximately east–west, with the largest single fragment at the farthest (east) end in the town of Winchcombe, Gloucestershire. Of the total known mass of 602 g, around 525 g is curated at the Natural History Museum, London. A sample analysis plan was devised within a month of the fall to enable scientists in the UK and beyond to quickly access and analyze fresh material. The sample is stored long term in a nitrogen atmosphere glove box. Preliminary macroscopic and electron microscopic examinations show it to be a CM2 chondrite, and despite an early search, no fragile minerals, such as halite, sulfur, etc., were observed.

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Using incompatible fireball camera systems to find meteorites – towards a data exchange standard

Cited by 2 publications

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The Winchcombe fireball—That lucky survivor

The Winchcombe fireball—That lucky survivor

Recovery and curation of the Winchcombe (CM2) meteorite

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