Personal computing discussed
Moderators: askfranklin, renee, emkubed, Captain Ned
jihadjoe wrote:HOLY CRAP DUDE!
I'm assuming this particular rock was completely outside of everybody's radar. LEO definitely needs more funds, and if they set up distributed computing i'd be happy to donate cpu cycles.
Captain Ned wrote:QFT.When they come in from a random direction at 19 miles per second, you've got no time to find them. Since the size estimate of this rock was around 10 tons, it's the type of rock that will never be detected by any means until it's in the atmosphere.
tanker27 wrote:Holy sheet! I wonder if people thought they were being attacked?
LaChupacabra wrote:NPR had a great interview with one of the project (I believe) coordinators of the Sentinel Mission. It is a privately funded operation that will be putting a detector in a venus-like orbit around the sun to detect 90% of asteroids 140 meters or greater in size. It will be able to locate a massive amount of objects down to 30 meters.
In the interview the guy said that they have had their first review of the detectors in January, and that the project is on track for a 2017-2018 launch. Their is a lot of good info on the website above
JohnC wrote:... Ok, and if it'll detect an asteroid few miles in diameter, heading straight to Earth, then what? What will be the point of detecting it? Bruce Willis is already too old to do anything
just brew it! wrote:OK, so this one was big, but not big enough to cause serious devastation.
ChronoReverse wrote:That's a little misleading since the 500kt is the total energy released over the entire event.
Captain Ned wrote:just brew it! wrote:OK, so this one was big, but not big enough to cause serious devastation.
500 kilotons not big enough?
just brew it! wrote:Captain Ned wrote:just brew it! wrote:OK, so this one was big, but not big enough to cause serious devastation.
500 kilotons not big enough?
No deaths (as far as we know so far). Damage seems to be limited to blown out windows and the like. I would say it did not cause "serious devastation".
ChronoReverse wrote:I couldn't find anything to calculated the explosive overpressure either except this one: http://stardestroyer.net/Resources/Calc ... sions.html
For 0.5MT you get 4.6psi at 5.7km. Air blasts are inverse cube root right? So that would put 12km close to 1psi?
just brew it! wrote:To get an accurate picture wouldn't you also need to account for the fact that an asteroid/meteor doesn't explode the same way TNT does? Or is that already accounted for in the 500 kT estimate?
Captain Ned wrote:ChronoReverse wrote:I couldn't find anything to calculated the explosive overpressure either except this one: http://stardestroyer.net/Resources/Calc ... sions.html
For 0.5MT you get 4.6psi at 5.7km. Air blasts are inverse cube root right? So that would put 12km close to 1psi?
Just like all of the calculators I googled it assumes optimum burst height, which is defined as the height that produces the greatest area of 10 PSI overpressure. Any potential blast we're talking about here is well above optimum, meaning a smaller 10 PSI area. What I'd really like to be able to model are the 5 PSI curves for varying blast heights in the range of 250-500 kt.