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Ernesto Guido
Italian amateur astronomer whose main interests lie in the astrometry and physical properties of comets
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Peter Brown 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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Ernesto Guido 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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Ernesto Guido 18. sij
Odgovor korisniku/ci @AdrienCoffinet @LouisVtweeter
Thanks Adrien, I guess you are right. haste makes waste. I'll cancel the tweet and send out a correct one. Ciao, Ernesto
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Ernesto Guido proslijedio/la je tweet
NASA's Lucy Mission 9. sij
Lucy will be visiting not just 7 asteroids, but 8! Eurybates has a satellite!
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Ernesto Guido 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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IMO Meteor Org. 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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Ernesto Guido 19. pro
"Evolving Coma Morphology of Interstellar Comet 2I/Borisov with Deep HST Imaging" by Bryce T. Bolin
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Ernesto Guido 16. pro
"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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Ernesto Guido proslijedio/la je tweet
Research Notes 13. pro
New Research Note: The Inbound Light Curve of 2I/Borisov
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Ernesto Guido 12. pro
"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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Karl Battams 11. pro
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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Ernesto Guido 10. pro
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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Ernesto Guido 7. pro
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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Ernesto Guido proslijedio/la je tweet
Karl Battams 4. pro
Congrats to my comet friends at , using to capture a really great sequence of comet 46P outbursting!
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Ernesto Guido 3. pro
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Ernesto Guido 2. pro
"Rooftop Astronomy” by is this week’s cover for magazine
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Ernesto Guido 2. pro
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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Ernesto Guido 27. stu
Six years ago, I sent Pynchon into space! "Asteroids named after Thomas Pynchon & Stabia" #152319
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W. M. Keck Observatory 26. stu
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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Ernesto Guido 15. stu
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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