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Denis Vida

@meteordoc.bsky.social
175 followers 142 following 25 posts

Research Professor at @westernu. Looking up.

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Denis Vida @meteordoc.bsky.social · 30/04/2026
Thrilled to share that our new paper, "A machine learning approach to meteor classification," has been accepted in Icarus! ☄️ This paper is a result of my collaboration with the amazing team at Lowell Observatory. 🧵👇
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Denis Vida @meteordoc.bsky.social · 20/04/2026
Back in 2024, the regional Global Meteor Network-enabled network, Fireball Aotearoa, tracked a brilliant fireball over New Zealand and we quickly reconstructed its trajectory and computed the meteorite strewn field.
youtube.com
This Meteorite Discovery Should Have Been Impossible
YouTube video by Out There Learning
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astrafoxen @astrafoxen.bsky.social · 02/07/2025
UPDATE on our new interstellar friend #A11pl3Z: Citizen scientist Sam Deen has found earlier observations of from June 25-28, from the ATLAS telescope! Now with 6 days' worth of data, the eccentricity of A11pl3Z's trajectory is narrowed down to e=10.4 ± 1.1! ... that's undoubtedly interstellar. 🔭☄️
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Dr. Teddy Kareta @teddykareta.bsky.social · 05/12/2024
got interviewed about our paper on 2022 WJ1 by space dot com: www.space.com/the-universe...
space.com
'It's like taking a picture of lightning': How astronomers raced to track the smallest asteroid ever seen
"Without question, it was the most exciting hour of my job that I’ve ever had."
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Denis Vida @meteordoc.bsky.social · 03/12/2024
The first videos of the #asteroid #C0WEPC5 entry in #Russia are coming out on @telegram. It appears to be very similar to previous asteroid entries (2022 WJ, 2023 CX1, 2024 BX1). Lots of fragments at the end, it probably dropped some rocks in a remote forested area.
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Dr. Teddy Kareta @teddykareta.bsky.social · 22/11/2024
for the first time, we were able to compare telescopic observations of an asteroid to later fireball camera observations of it as it burned up -- both techniques agree really well: *2022 WJ1 was the smallest asteroid ever characterized in space*. [woo-hoo!]
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Dr. Teddy Kareta @teddykareta.bsky.social · 22/11/2024
out today in the planetary science journal: "Telescope-to-Fireball Characterization of Earth Impactor 2022 WJ1" lead by yours truly. many thanks to my incredible coauthors, especially @meteordoc.bsky.social in the #2 spot, for making this study possible. iopscience.iop.org/article/10.3...
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Denis Vida @meteordoc.bsky.social · 05/12/2023
In our new paper on #arxiv, we measure the density and structural composition of mm-sized meteoroids and find that cometary dust arriving on Earth is fluffer than we thought! #astronomy #meteors arxiv.org/abs/2312.00897
arxiv.org
A Physical Survey of Meteoroid Streams: Comparing Cometary Reservoirs
In this work, we present an optical survey of mm-sized meteoroids using the Canadian Automated Meteor Observatory's (CAMO) mirror tracking system. The system tracks meteors to magnitude +7.5...
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Denis Vida @meteordoc.bsky.social · 03/11/2023
See our latest paper on the Golden #meteorite in #Canada which fell into a bed, inches away from the head of Ruth Hamilton who was asleep at the time: arxiv.org/abs/2310.17822 #astronomy
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Jonathan McDowell @planet4589.bsky.social · 20/10/2023
Today's space plot: distribution of orbital heights for cataloged objects currently in Low Earth Orbit, by object type (Starlink is offscale high here). X axis is height in km
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Denis Vida @meteordoc.bsky.social · 10/10/2023
Another tiny ~30 g #meteorite ~100 km south of #Quebec City went into the dense woods near Lac Aylmer. Speed of 17 km/s, 66° entry angle. Observed between 85.4 - 28.7 km. Credit: Robert Veronneau, Michel Saint-Laurent, Guy Létourneau #globalmeteornetwork
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Denis Vida @meteordoc.bsky.social · 04/10/2023
A #fireball dropped a tiny ~20 g #meteorite some 100 km SW of #Perth, #Australia. It entered the atmosphere at a slow speed of 13.5 km/s, 60° entry angle. It was first observed at a height of 82.6 km and its terminal height was 30.7 km. Credit: Dave Rollinson #globalmeteornetwork
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