Quote:Do not base space motion *only* from trajectories as observed from a moving and rotating platform. The two principal components which have to be 'subtracted', as it were, are the Earth's own 29.7km/s motion and the location of the observer on the round Earth at the time of the event. The derived true space motion can differ quite substantially from the apparent motion.In any event, I suspect this and DA14 to be unrelated. But we'll very soon know...
Quote:Once while exiting a comutter jet I asked the pilot if he ever saw and/or thought about the possibilities of meteors hitting the aircraft. He said H*** yes, he had seen several go below his aircraft before they "popped".Duhhh!
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Quote:Orbits are calculated with respect to the Sun, or more properly, I suppose, the barycenter of the Solar system, which is still inside the Sun. Two related bodies must therefore have quite similar orbital parameters, even if over time they have drifted some distance apart.
Quote:It just occurred to me... What might have resulted if an airliner were at altitude and more or less below the point of the airburst?And could it be possible for some such situation in the past to have been the cause of a mysterious disappearance of an aircraft?..
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Quote: "We would expect an event of this magnitude to occur once every 100 years on average," said Paul Chodas of NASA's Near-Earth Object Program Office at the Jet Propulsion Laboratory in Pasadena, Calif. "When you have a fireball of this size we would expect a large number of meteorites to reach the surface and in this case there were probably some large ones."
Quote: nearly 500 kilotons of energy released
A man is a small thing, and the night is very large and full of wonders.
Quote:... what an interesting day. I actually made a record of the day to remember it. Should be one for the history books.
Dan Orion XT8g If your dob isn't broke, fix it anyway. Don't tell me what I want to hear, tell me the truth.
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Quote:Wondering if its possible that any of the explosions heard were echos from sound waves bouncing off the top of the atmosphere. Could that happen?
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I don't know how old I was when I was one.
Quote:No, this meteorite event in Russia is from a stone that traveled north-to-south; the asteroid 2012 DA14 (that you can now follow live at http://www.ustream.tv/nasajpl2 ) is going south-to-north.
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Quote:Just curious where your getting 200 kilotons when NASA is reporting 500 kilotons. Do you have a link?
Quote:Sky and Telescope reported it as 300 kilotons..
Quote:The implication to me is that science has an awfully long way to go interpreting events of this sort with any meaningful accuracy.
Quote:Or maybe the media can't be bothered to report CURRENT numbers.
Orion 8"/F4.9 Newt / Atlas EQ-G / EQMOD AT72ED / Porta II Canon 40D / SSAGMy AstrobinMember of Sheep Hill Astronomical Association
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Quote:I think its odd that the Russian Scientists and the NASA scientists have numbers way off from each other. I think I'm gonna trust the Russians on the calculations rather than NASA. Russia still sends people into space, we (USA) don't anymore. I guess they did win the space race after all.
I don't believe in astrology. I am a Gemini and we're very skeptical.
Quote:There is still something about these events that is still bothering me. It is being said that these two events, the meteorite & asteroid cannot be connected as they came from opposite directions. Could this have happened this way if the meteorite was in orbit around the asteroid?I can imagine the meteoroid in a highly elliptical orbit striking the Earth in its 'return' trip, ahead of the near miss of the asteroid.
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