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massive meteorite shower
Dr paul wrote in message
... Sorry if this offends as not the right group ,but just seen a massive meteorite to the north of Leeds uk ,travelling east north east to west south west ,it split up at about 40 degree declination and to the north of me ,into 6 to 8 fragments and disappeared into the west , the whole thing visible for 20 to 30 seconds ,absolutely amazing ,best I ve ever seen.Anyone else see it? Paul ++++ As viewing restricted to the north of the UK, does that not suggest it came from a low orbit, so space junk origin more likely? |
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massive meteorite shower
N_Cook wrote:
Dr paul wrote in message ... Sorry if this offends as not the right group ,but just seen a massive meteorite to the north of Leeds uk ,travelling east north east to west south west ,it split up at about 40 degree declination and to the north of me ,into 6 to 8 fragments and disappeared into the west , the whole thing visible for 20 to 30 seconds ,absolutely amazing ,best I ve ever seen.Anyone else see it? Paul ++++ As viewing restricted to the north of the UK, does that not suggest it came from a low orbit, so space junk origin more likely? No. It was not seen from the South because it was cloudy there. I believe there was a report from Norfolk. Roger |
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massive meteorite shower
In uk.sci.astronomy message , Sat, 22 Sep
2012 08:05:54, N_Cook posted: Dr paul wrote in message ... Sorry if this offends as not the right group ,but just seen a massive meteorite to the north of Leeds uk ,travelling east north east to west south west ,it split up at about 40 degree declination and to the north of me ,into 6 to 8 fragments and disappeared into the west , the whole thing visible for 20 to 30 seconds ,absolutely amazing ,best I ve ever seen.Anyone else see it? Paul ++++ As viewing restricted to the north of the UK, does that not suggest it came from a low orbit, so space junk origin more likely? From the description, and from video material, it was obviously an artefact entering the Earth's atmosphere at about or under LEO speed and breaking up. The probability is that it was an artefact of Earth origin re-entering and breaking up. I saw something similar myself, decades ago; my first thought was that it was an aeroplane disaster, but soon saw that no aeroplane could suffer anything that disastrous for that long. It certainly was not, as described in the press, a meteor shower, as a shower is the entry of a number of meteors, not just one. -- (c) John Stockton, nr London, UK. Mail via homepage. Turnpike v6.05 MIME. Web http://www.merlyn.demon.co.uk/ - FAQqish topics, acronyms and links; Astro stuff via astron-1.htm, gravity0.htm ; quotings.htm, pascal.htm, etc. No Encoding. Quotes before replies. Snip well. Write clearly. Don't Mail News. |
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massive meteorite shower
Dr J R Stockton wrote in message
nvalid... In uk.sci.astronomy message , Sat, 22 Sep 2012 08:05:54, N_Cook posted: Dr paul wrote in message ... Sorry if this offends as not the right group ,but just seen a massive meteorite to the north of Leeds uk ,travelling east north east to west south west ,it split up at about 40 degree declination and to the north of me ,into 6 to 8 fragments and disappeared into the west , the whole thing visible for 20 to 30 seconds ,absolutely amazing ,best I ve ever seen.Anyone else see it? Paul ++++ As viewing restricted to the north of the UK, does that not suggest it came from a low orbit, so space junk origin more likely? From the description, and from video material, it was obviously an artefact entering the Earth's atmosphere at about or under LEO speed and breaking up. The probability is that it was an artefact of Earth origin re-entering and breaking up. I saw something similar myself, decades ago; my first thought was that it was an aeroplane disaster, but soon saw that no aeroplane could suffer anything that disastrous for that long. It certainly was not, as described in the press, a meteor shower, as a shower is the entry of a number of meteors, not just one. -- (c) John Stockton, nr London, UK. Mail via homepage. Turnpike v6.05 MIME. Web http://www.merlyn.demon.co.uk/ - FAQqish topics, acronyms and links; Astro stuff via astron-1.htm, gravity0.htm ; quotings.htm, pascal.htm, etc. No Encoding. Quotes before replies. Snip well. Write clearly. Don't Mail News. So you would call a meteor shower, unsynced , distributed streaks with a common radiant point , well off the planet. If a small meteorite/ large meteor, breaks up inside our atmosphere, what would you term the the shower of synced, close-spaced trails? |
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massive meteorite shower
In uk.sci.astronomy message , Mon, 24 Sep
2012 08:27:03, N_Cook posted: Dr J R Stockton wrote in message . invalid... So you would call a meteor shower, unsynced , distributed streaks with a common radiant point , well off the planet. If a small meteorite/ large meteor, breaks up inside our atmosphere, what would you term the the shower of synced, close-spaced trails? The trails of pieces of a meteor - but not a shower. That presumes that the original meteor was visible, if not necessarily seen, before it broke up; and so had been a single meteoroid. An exercise for the reader : consider a meteoroid which is essentially a bag of marbles, or of grains, but without the bag and held together only by their mutual gravity. Assume that they arrive at the Roche Limit with the usual sort of speed, and in a direction which meets the atmosphere at the usual sort of angle for human-observed meteors. The clump will begin to break up on crossing the Limit. Typically, what will be the spread of the marbles or grains when they become visible? -- (c) John Stockton, nr London, UK. Mail via homepage. Turnpike v6.05 MIME. Web http://www.merlyn.demon.co.uk/ - FAQqish topics, acronyms and links; Astro stuff via astron-1.htm, gravity0.htm ; quotings.htm, pascal.htm, etc. No Encoding. Quotes before replies. Snip well. Write clearly. Don't Mail News. |
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massive meteorite shower
Dr J R Stockton wrote in message
nvalid... In uk.sci.astronomy message , Mon, 24 Sep 2012 08:27:03, N_Cook posted: Dr J R Stockton wrote in message . invalid... So you would call a meteor shower, unsynced , distributed streaks with a common radiant point , well off the planet. If a small meteorite/ large meteor, breaks up inside our atmosphere, what would you term the the shower of synced, close-spaced trails? The trails of pieces of a meteor - but not a shower. That presumes that the original meteor was visible, if not necessarily seen, before it broke up; and so had been a single meteoroid. An exercise for the reader : consider a meteoroid which is essentially a bag of marbles, or of grains, but without the bag and held together only by their mutual gravity. Assume that they arrive at the Roche Limit with the usual sort of speed, and in a direction which meets the atmosphere at the usual sort of angle for human-observed meteors. The clump will begin to break up on crossing the Limit. Typically, what will be the spread of the marbles or grains when they become visible? -- (c) John Stockton, nr London, UK. Mail via homepage. Turnpike v6.05 MIME. Web http://www.merlyn.demon.co.uk/ - FAQqish topics, acronyms and links; Astro stuff via astron-1.htm, gravity0.htm ; quotings.htm, pascal.htm, etc. No Encoding. Quotes before replies. Snip well. Write clearly. Don't Mail News. A cylinder ? |
#7
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massive meteorite shower
In uk.sci.astronomy message , Wed, 26 Sep
2012 09:12:50, N_Cook posted: Dr J R Stockton wrote in message . invalid... In uk.sci.astronomy message , Mon, 24 Sep 2012 08:27:03, N_Cook posted: Dr J R Stockton wrote in message . invalid... So you would call a meteor shower, unsynced , distributed streaks with a common radiant point , well off the planet. If a small meteorite/ large meteor, breaks up inside our atmosphere, what would you term the the shower of synced, close-spaced trails? The trails of pieces of a meteor - but not a shower. That presumes that the original meteor was visible, if not necessarily seen, before it broke up; and so had been a single meteoroid. An exercise for the reader : consider a meteoroid which is essentially a bag of marbles, or of grains, but without the bag and held together only by their mutual gravity. Assume that they arrive at the Roche Limit with the usual sort of speed, and in a direction which meets the atmosphere at the usual sort of angle for human-observed meteors. The clump will begin to break up on crossing the Limit. Typically, what will be the spread of the marbles or grains when they become visible? A cylinder ? But of what size? -- (c) John Stockton, Surrey, UK. Turnpike v6.05 MIME. Web http://www.merlyn.demon.co.uk/ - FAQish topics, acronyms, & links. Proper = 4-line sig. separator as above, a line exactly "-- " (SonOfRFC1036) Do not Mail News to me. Before a reply, quote with "" or " " (SonOfRFC1036) |
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