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Tony Dunn
Orbit simulations of planets, comets, asteroids and other interesting stuff. Amateur astronomer. Bachelor's: Physics & Astro, SFSU. Riordan physics teacher.
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Tony Dunn 4. velj
Odgovor korisniku/ci @malena_rice
That makes my day! If they're in PPT or any other format, send me a copy. I've definitely had many bad days repaired by seeing my work used by others.
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Tony Dunn 4. velj
Odgovor korisniku/ci @malena_rice
Welcome to San Francisco! A student at my high school interviewed me today. He's doing a story on Borisov for our school paper. I included stuff I learned from you, about LSST, now VRO, possibly finding many of these objects each year, giving us clues about planet formation.
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Tony Dunn 3. velj
Riordan High School Band plays at 's ribbon-cutting ceremony in San Francisco.
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Tony Dunn 3. velj
On this day 7 years from now, Voyager I will be 1 light day away from the Sun.
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Tony Dunn 2. velj
Odgovor korisniku/ci @burgardt_gaston
Probably very small as it was only discovered after close approach. 1-3 meters would be my guess, but I don't know.
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Tony Dunn 2. velj
Odgovor korisniku/ci @vareck
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Tony Dunn 2. velj
Newly-discovered asteroid C21VL72 passed less than 10,000 km above Earth's surface yesterday.
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Tony Dunn 1. velj
Odgovor korisniku/ci @johndes123 @NBObservatories
Too bad it missed. At 7 meters max, it would have been a beautiful bolide that caused no damage.
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Tony Dunn 1. velj
2020 BZ13 was observed by on Jan 28th. This 3-7 meter rock passed 106,000 km from Earth at a very rapid 24 km/s on January 29.
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Tony Dunn 30. sij
Here are the 19 most massive asteroids in the asteroid belt.
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Tony Dunn proslijedio/la je tweet
Sal Castaneda 30. sij
The high school I attended in San Francisco, Riordan High School, is going co-ed starting next year. Since it opened in 1949 it has been an all boys Catholic high school. Riordan joins St. Ignatius and Sacred Heart who made the switch years ago. This is me on graduation day:
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Tony Dunn 29. sij
Parker At Perihelion. The is at perihelion, 0.1296 AU. No manmade object has ever been this close to the Sun.
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Tony Dunn 29. sij
Odgovor korisniku/ci @sal_castaneda
Why can't they complete Van Ness before they ruin another street?
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Tony Dunn 28. sij
Odgovor korisniku/ci @cometmachholz
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Tony Dunn 26. sij
Galileo could have been credited with the discovery of Neptune. He saw it in 1613 while Neptune was undergoing retrograde motion around Jupiter. But he mistook it as a background star.
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Tony Dunn 26. sij
Today, breaks its previous record of 0.166 AU for closest distance to the Sun by any spacecraft. Future Venus flybys will send it even closer.
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Tony Dunn 26. sij
Odgovor korisniku/ci @vareck
"but I plotted a few more satellites" 😁 Yes you did! I love the Earth's shadow.
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Tony Dunn 26. sij
Odgovor korisniku/ci @burgardt_gaston
Apophis is the size of a stadium, including the parking lot. It was discovered in 2004 and has been observed as recently as 2015. Its orbit is well-established. BH6 is probably the size of a minivan or bus. It's unlikely to be observed again until it once again surprises us.
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Tony Dunn 26. sij
Odgovor korisniku/ci @CA_AstroComm
Rocket Man -- Elton John Across the Universe -- The Beatles
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Tony Dunn 26. sij
Odgovor korisniku/ci @AdrienCoffinet
The smaller orbit is after.
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