Ernesto Guido

@comets77

Italian amateur astronomer whose main interests lie in the astrometry and physical properties of comets

Italy
Vrijeme pridruživanja: lipanj 2009.

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  1. proslijedio/la je Tweet
    23. sij

    Kintail fireball from Jan 22 as captured early in flight by accident on most sensitive meteor cameras which use EMCCDs from . FOV is roughly 15x15 degrees and faintest visible stars are near +12.

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  2. 18. sij

    At 2130UTC of 2020-01-17, a was detected just north of Puerto Rico (5:31pm local time). Video via - Satellite image available here:

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    9. sij
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  4. 6. sij

    New Comet C/2019 Y1 (ATLAS), imaged from a dark Chilean sky and a 0.61-m f/6.5 reflector + ccd - Thanks to remote facility cc

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    6. sij

    What could best start the year than a fresh meteorite recovery after a huge fireball on January 1st? This is what just happened in Northern Italy...

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  6. 19. pro 2019.

    "Evolving Coma Morphology of Interstellar Comet 2I/Borisov with Deep HST Imaging" by Bryce T. Bolin

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  7. 16. pro 2019.

    "Hubble Watches Interstellar Comet Borisov Speed Past the Sun" - Hubble images show that its nucleus is more than 15 times smaller than earlier investigations suggested it might be. The radius is smaller than half a kilometre.

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    13. pro 2019.

    New Research Note: The Inbound Light Curve of 2I/Borisov

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  9. 12. pro 2019.

    "The Nucleus of Interstellar Comet 2I/Borisov" by Jewitt et al. - "We used the Hubble Space Telescope to observe interstellar comet 2I/(2019 Q4) Borisov. Three independent constraints show that the nucleus is a sub-kilometer body"

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    There it is folks! The first visible detection of a dust trail following the orbit of near-Sun/near-Earth active asteroid Phaethon!

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  11. 10. pro 2019.

    Interstellar Comet 2I/Borisov imaged few hours ago (2019, Dec. 10.29) from a dark Chilean sky and a 0.61-m f/6.5 reflector + ccd (its closest approach to the sun was on Dec. 8). Thanks to remote facility

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  12. 7. pro 2019.

    Giovanni Sostero (18 March 1964 – 6 December 2012). Remembering a Great Friend and a Great Astronomer - In Memoria di un Grande Amico e un Grande Astronomo

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    Congrats to my comet friends at , using to capture a really great sequence of comet 46P outbursting!

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  14. 2. pro 2019.
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  15. 2. pro 2019.

    "Rooftop Astronomy” by is this week’s cover for magazine

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  16. 2. pro 2019.

    RIP Astronomer Michael Clark (1942 - 2019). Discoverer of comet 71P/Clark in 1973 at the Mt John University Observatory, passed away in Melbourne, Australia. via

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  17. 27. stu 2019.

    Six years ago, I sent Pynchon into space! "Asteroids named after Thomas Pynchon & Stabia" #152319

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  18. proslijedio/la je Tweet

    Check out this new image of comet 2I/Borisov taken Nov 24 using ! Earth is superimposed on the image to show the comet’s size: its tail is 14x the size of our planet! Closet approach to Earth is early Dec. Mahalo of & his team for the image!

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  19. 15. stu 2019.

    New papers on interstellar comet 2I/Borisov: "Pre-discovery Activity of New Interstellar Comet 2I/Borisov Beyond 5 AU" by et al. & "Sublimation of water ice....near the nucleus of 2I/BORISOV?" by Z. Sekanina

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  20. 31. lis 2019.

    BRIGHT NOVA SCUTI 2019 - Image & animation from the dark sky of Chile thanks to remote facility

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