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Denis Vida
@meteordoc
Adjunct research professor @westernu. Bringing free scientific software to the world. Interested in everything above our heads. Meteors. Satellites. Contrails.
globalmeteornetwork.org
Joined May 2020
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  • user avatar
    Denis Vida
    @meteordoc
    Sep 22, 2020
    (1/2) An earthgrazer above N Germany and the Netherlands was observed by 8 #globalmeteornetwork cameras on Sept 22, 03:53:35 UTC. It entered the atmosphere at 34.1 km/s, reached the lowest altitude of ~91 km and bounced back into space! @westernuScience @IMOmeteors @amsmeteors
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  • user avatar
    Denis Vida
    @meteordoc
    Jan 21, 2024
    Here's the full video of the asteroid #Sar2736, a ~1 m object that broke up some 50 m west of #Belin, #Germany, and probably dropped some meteorites on the ground. Video credit: iplivecams.com/live-cams/augu…
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  • user avatar
    Denis Vida
    @meteordoc
    May 30, 2022
    Here is a selection of tau Herculids from last night observed by #globalmeteornetwork cameras. The video in real time and the cameras are close to the sensitivity of the human eye, so you can expect to see them like this in person tonight! #tauherculids2022 #Meteorshower
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  • user avatar
    Denis Vida
    @meteordoc
    Oct 19, 2022
    1/3 This year the Earth is passing through the resonant swarm of the Taurid meteoroid stream. Some have theorized that it might hold 100+ m asteroids and be the only known concentrated source of Potentially Hazardous Objects. We're organizing an observing campaign to map it out!
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  • user avatar
    Denis Vida
    @meteordoc
    Jan 21, 2024
    #Sar2736 - caught on camera!
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  • user avatar
    Denis Vida
    @meteordoc
    Sep 22, 2020
    Replying to @meteordoc
    (2/2) It was on a Jupiter-family orbit (a = 2.56 AU, q = 0.29 AU, e = 0.88, i = 2.93, w = 239.67, O = 359.31). Parent body seach found no conclusive hits.
  • user avatar
    Denis Vida
    @meteordoc
    Jan 29, 2022
    Very rarely, our telescopic meteor tracking system records "bursting" meteors. These seem to catastrophically disrupt into constituent grains which ablate separately as single bodies. Credit: @WesternU Meteor Physics Group / @NASA Meteoroid Environment Office @westernuScience
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  • user avatar
    Denis Vida
    @meteordoc
    Feb 13, 2023
    #Sar2667 asteroid entry caught by a webcam in #Brighton skylinewebcams.com/en/webcam/unit…
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    Denis Vida
    @meteordoc
    Mar 29, 2022
    A #globalmeteornetwork camera in #Germany recorded a fireball on March 26 which left a dust trail visible for 20 minutes! The twisting was caused by high altitude winds. Credit: Jürgen Dörr
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    Denis Vida
    @meteordoc
    Dec 14, 2021
    For the first time ever, we captured how the Geminids fragment with the Canadian Automated Meteor Observatory's telescopic system. Just in time to publish some papers before @JAXA_en DESTINY+ launches! Credit: @WesternU Meteor Physics Group / @NASA Meteoroid Environment Office
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  • user avatar
    Denis Vida
    @meteordoc
    Nov 1, 2022
    An extremely bright bolide was observed over #Arizona on Oct 31 which left a smoke trail visible for over 20 minutes! Credit: Matt Cheselka (@AstroAndMusic), Lowell Observatory (@LowellObs) #fireball #meteor
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    Denis Vida
    @meteordoc
    Jul 13, 2022
    An almost #meteorite dropper last night (2022/07/13 01:13:57 UTC) over lake Balaton in #Hungary. It entered the atmosphere at 29.3 km/s over #Croatia. It became visible at the height of 103 km, lasted over 6 seconds, and reached a terminal height of 37 km. No rocks this time...
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  • user avatar
    Denis Vida
    @meteordoc
    Dec 12, 2022
    For the first time ever, we have a direct measurement of a rocky meteoroid that came from the Oort cloud! Here's my paper in Nature Astronomy:
    user avatar
    Nature Astronomy
    @NatureAstronomy
    Dec 12, 2022
    A 2 kg rocky meteoroid observed in February 2021 is shown to be coming directly from the Oort cloud, indicative of a high ice/rock ratio there (1-20%) and supportive of a massive proto-asteroid belt scenario. Vida (@meteordoc) et al.: nature.com/articles/s4155…
  • user avatar
    Denis Vida
    @meteordoc
    Aug 12, 2023
    The skies were busy last night with #Persieds (and satellites near the morning). Make sure to watch tonight if the weather is clear! #MeteorShower #globalmeteornetwork #meteor
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