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Asteroid passing below some of our satellites on feb 15
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Space Station Commander ![]() ![]()
Joined: Wed Aug 18, 2004 8:47 am
Posts: 521 Location: Science Park, Cambridge, UK ![]() |
Far be it for me to introduce some facts, but here goes...
http://www.bbc.co.uk/news/science-environment-21579422 Basically an Apollo asteroid. Which I think means unrelated to the near miss on Feb 13th. |
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Moon Mission Member ![]() ![]()
Joined: Mon Dec 18, 2006 11:15 pm
Posts: 1050 Location: Columbus, GA USA ![]() |
That is the same story Alex posted. And it is not "fact". It is a hypothesis, based upon it's atmospheric track and the presumption not evidence, that it entered directly from it's orbit like a bullet from a gun.
Anyway, I'll stop the defense of my pet theory before I wind up looking (more) like I'm wearing tin foil. Either way hopefully this brings more attention and resources to the asteroid hunt and space in general. I bet a whole bunch of Russians are. |
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Space Walker ![]() ![]()
Joined: Sat Jul 01, 2006 12:18 am
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JamesHughes wrote: Far be it for me to introduce some facts, but here goes... http://www.bbc.co.uk/news/science-environment-21579422 Basically an Apollo asteroid. Which I think means unrelated to the near miss on Feb 13th. Asteroid 2012 DA14 was also an Apollo asteroid before the close flyby: 2012 DA14. Quote: Minor planet category Post 2013-Feb-15: Aten[2][3] Pre-2013: Apollo NEO[2] http://en.wikipedia.org/wiki/2012_DA14 Also this image shows how greatly the orbit of 2012 DA14 was changed by the close flyby at 17,000 miles away: ![]() Imagine then how greatly the orbit could be altered if a meteor passed by at only 10 miles away. Bob Clark _________________ Nanotechnology now can produce the space elevator and private orbital launchers. It now also makes possible the long desired 'flying cars'. This crowdfunding campaign is to prove it: Nanotech: from air to space. https://www.indiegogo.com/projects/nano ... 13319568#/ |
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Space Station Commander ![]() ![]()
Joined: Wed Aug 18, 2004 8:47 am
Posts: 521 Location: Science Park, Cambridge, UK ![]() |
JamesG wrote: That is the same story Alex posted. And it is not "fact". It is a hypothesis, based upon it's atmospheric track and the presumption not evidence, that it entered directly from it's orbit like a bullet from a gun. Anyway, I'll stop the defense of my pet theory before I wind up looking (more) like I'm wearing tin foil. Either way hopefully this brings more attention and resources to the asteroid hunt and space in general. I bet a whole bunch of Russians are. It may be hypothesis, but it's one entirely consistent with all the known facts. Like Evolution, and QED ![]() Whereas your pet theory doesn't necessarily agree with all the known facts. Not saying your pet theory is wrong of course, but it's much less likely to be right. Occams razor and all that. |
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Joined: Mon Dec 18, 2006 11:15 pm
Posts: 1050 Location: Columbus, GA USA ![]() |
Its at least as likely probabilistically as the officially accepted theory.
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Space Walker ![]() ![]()
Joined: Sat Jul 01, 2006 12:18 am
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RGClark wrote: Meteor expert Clark Chapman and former astronaut Rusty Schweickart urge U.S. military to re-initiate sharing of satellite detections of meteor impacts: Russian Meteor Fallout: Military Satellite Data Should Be Shared. by Leonard David, SPACE.com’s Space Insider Columnist Date: 18 February 2013 Time: 09:03 AM ET http://www.space.com/19846-russian-mete ... lites.html From links in the article, the military formerly did share this information but the policy was changed in 2009. This is important because the satellites reportedly have the capability to detect meteors down to 1 meter wide and below. This would well have the capability to determine if close asteroid flybys result in increased meteor impacts. This video or ones like it may also be able to address this question: An Asteroid's Parting Shot. By Phil Plait Posted Tuesday, Feb. 19, 2013, at 8:00 AM http://www.slate.com/blogs/bad_astronom ... video.html The video shows asteroid 2012 DA14 slowing moving through the frame, and meteors and artificial satellites streaking rapidly through the frame. Assuming we are able to distinguish the satellites, perhaps by knowing already their positions, then perhaps we can determine if the number of meteors shown here are higher than normal. Better would be longer exposures that include at least the time period of the Russian meteor impact. Bob Clark _________________ Nanotechnology now can produce the space elevator and private orbital launchers. It now also makes possible the long desired 'flying cars'. This crowdfunding campaign is to prove it: Nanotech: from air to space. https://www.indiegogo.com/projects/nano ... 13319568#/ |
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Space Walker ![]() ![]()
Joined: Sat Jul 01, 2006 12:18 am
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RGClark wrote: This video or ones like it may also be able to address this question: An Asteroid's Parting Shot. By Phil Plait Posted Tuesday, Feb. 19, 2013, at 8:00 AM http://www.slate.com/blogs/bad_astronom ... video.html The video shows asteroid 2012 DA14 slowing moving through the frame, and meteors and artificial satellites streaking rapidly through the frame. Assuming we are able to distinguish the satellites, perhaps by knowing already their positions, then perhaps we can determine if the number of meteors shown here are higher than normal. Better would be longer exposures that include at least the time period of the Russian meteor impact. The Fireballs of February. Feb. 22, 2012 Quote: ... They all hail from the asteroid belt—but not from a single location in the asteroid belt," he says. "There is no common source for these fireballs, which is puzzling." This isn't the first time sky watchers have noticed odd fireballs in February. In fact, the "Fireballs of February" are a bit of a legend in meteor circles. Brown explains: "Back in the 1960s and 70s, amateur astronomers noticed an increase in the number of bright, sound-producing deep- penetrating fireballs during the month of February. The numbers seemed significant, especially when you consider that there are few people outside at night in winter. Follow-up studies in the late 1980s suggested no big increase in the rate of February fireballs. Nevertheless, we've always wondered if something was going on." Indeed, a 1990 study by astronomer Ian Holliday suggests that the 'February Fireballs' are real. He analyzed photographic records of about a thousand fireballs from the 1970s and 80s and found evidence for a fireball stream intersecting Earth's orbit in February. He also found signs of fireball streams in late summer and fall. The results are controversial, however. Even Halliday recognized some big statistical uncertainties in his results. ... http://science.nasa.gov/science-news/sc ... fireballs/ Note this was from last year, not this year in regard to this February's unusual meteor and asteroid encounters. But what's key is the article notes this has been noticed in other February's. The article suggests greater number of fireballs in February. It also mentions they are typically slow, long-lasting, and penetrate deep in the atmosphere. I don't know about the slow part, but the long-lasting and deep penetration aspects could be due to larger meteors during February's. If there is an association with the 2012 DA14 asteroid, then since it has approximately a year long orbit, this could explain why the fireballs are seen frequently in February. Note it was discovered last year in February also during a close approach. Also notable are the two orbital crossings per year of the asteroid 2012 DA14 with respect to the Earth's orbit: La Sagra Observatory discovers very near-Earth asteroid 2012 DA14. Posted By Jaime Nomen 2012/03/27 05:20 CDT Quote: The preliminary orbit shows that 2012 DA14 has a very Earth-Like orbit with a period of 366.24 days, just one more day than our terrestrial year. The orbit is nearly circular but just elliptical enough to jump inside and outside of the path of Earth two times per year. Because objects move faster when they are closer to the Sun, the relative motion is similar to some sports races: when the Earth is on the outer track, it is overtaken by 2012 DA14, but when the asteroid crosses Earth's orbit, Earth overtakes it and passes by. It is during the orbit crossings when the closest encounters occur, and when there is potential for a future impact. http://www.planetary.org/blogs/guest-blogs/3418.html Astronomer Steven Willner noted this could result in rather close approaches on the second crossing as well. This could explain the observation of Ian Halliday that there seems to be a statistical increase also in late Summer and Fall. In any case, the Air Force needs to release its satellite detections of these fireballs. For one thing they might be able to detect the meteors before they have any appreciable interaction with the atmosphere. For large meteors, of oblong shape, the atmospheric interaction could alter their direction, thus giving a misleading interpretation of their original orbits. For many people the Air Force not sharing all the technical means at its disposal led to the loss of the shuttle Columbia crew. It must not be said that its keeping its meteor detections capability secret led to the loss of an entire city. Bob Clark _________________ Nanotechnology now can produce the space elevator and private orbital launchers. It now also makes possible the long desired 'flying cars'. This crowdfunding campaign is to prove it: Nanotech: from air to space. https://www.indiegogo.com/projects/nano ... 13319568#/ |
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Joined: Thu Mar 21, 2013 6:31 pm
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How about a new hypothesis concerning the timing of Russian meteor and the close approach event:
Some vast, extraterrestrial intelligence is trying to warn us of the urgent need for a meteor/comet defense system for our fragile earth-bound civilizations. ![]() Asteroid headed toward Earth? 'Pray,' NASA advises _________________ The most promising new channel on YouTube: FargoFX (in my totally dispassionate and thoroughly objective opinion.) |
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Space Station Commander ![]() ![]()
Joined: Sun Jan 17, 2010 2:21 pm
Posts: 547 Location: B.O.A. UK ![]() |
An update on the plume produced by the Russian near miss
http://www.theregister.co.uk/2013/08/15 ... nsk_plume/ _________________ Someone has to tilt at windmills. So that we know what to do when the real giants come!!!! |
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Space Walker ![]() ![]()
Joined: Sat Jul 01, 2006 12:18 am
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Meteor Sparks Incredible Fireball Over US Midwest (Video).
By Miriam Kramer, Staff Writer | September 30, 2013 03:18pm ET Quote: "This was a very bright event," Bill Cooke of NASA's Meteoroid Environment Office told Spaceweather.com. "Flares saturated our meteor cameras, and made determination of the end point (the terminus of the fireball's flight through the atmosphere) virtually impossible. Judging from the brightness, we are dealing with a meter class object." http://www.space.com/23001-meteor-fireb ... video.html By Deborah Byrd in BLOGS | EARTH | HUMAN WORLD on Sep 28, 2013 U.S. sees another bright fireball on September 27. Quote: September 2013 has been busy for sightings of bright fireballs. The one at 11:33 p.m. local time on September 27 was the 14th fireball sighting in the U.S. in September. The American Meteor Society (AMS) has reported at least 373 reports of another bright fireball – a very bright meteor, likely a small chunk of natural incoming space debris – over the U.S. last night (September 27, 2013). These reports followed a similar event over approximately the same area the day before (September 26). The AMS called the coincidence of two bright fireballs, or bright meteors, spotted over approximately the same region on consecutive days "surprising." Witnesses from Georgia, Illinois, Indiana, Kentucky, Maryland, North Carolina, New York, Ohio, Pennsylvania, Tennessee, Virginia, Wisconsin and West Virginia reported a bright light moving across the night sky on September 27 at around 11:33 p.m. local time, according to the AMS. Fireball might sound ominous, but it is just the word astronomers use to mean bright meteor. As seen from a whole-Earth perspective, fireballs are seen often. It’s unusual to have two appear on consecutive nights over the same region, however. September 2013 has been a busy month for sightings of bright meteors, according to the AMS. Last night’s event marks the 14th fireball sighting with at least 25 witnesses in September, the most ever since the AMS started recording sightings online, they say. http://earthsky.org/earth/u-s-midwest-s ... t-fireball The coincidences keep building and building ... Bob Clark _________________ Nanotechnology now can produce the space elevator and private orbital launchers. It now also makes possible the long desired 'flying cars'. This crowdfunding campaign is to prove it: Nanotech: from air to space. https://www.indiegogo.com/projects/nano ... 13319568#/ |
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Not sure about coincidences but as more data arrives they might have to update the statistical probabilities.
http://www.wired.com/wiredscience/2013/ ... nt-impact/ Mind you if its true "Earth experiences an airburst explosion similar in energy to Hiroshima almost every year" i am surprised there has not been more broken glass filmed in the last decade even if the majority happen over the oceans or uninhabited areas. _________________ Someone has to tilt at windmills. So that we know what to do when the real giants come!!!! |
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The harder you look, the more you see. I don't think we can draw the conclusion that there are more meteor events than there used to be, unless we can somehow credibly estimate the extent of and compensate for the enormous increase in recording and communication capabilities of our species. We have a similar thing in ecology: most species of organisms are observed and recorded more often now than they ever have been in the past, but if you take out the observation bias, they're actually mostly in decline. The same could easily be true for meteor events.
_________________ Say, can you feel the thunder in the air? Just like the moment ’fore it hits – then it’s everywhere What is this spell we’re under, do you care? The might to rise above it is now within your sphere Machinae Supremacy – Sid Icarus |
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SANEAlex wrote: Not sure about coincidences but as more data arrives they might have to update the statistical probabilities. http://www.wired.com/wiredscience/2013/ ... nt-impact/ Mind you if its true "Earth experiences an airburst explosion similar in energy to Hiroshima almost every year" i am surprised there has not been more broken glass filmed in the last decade even if the majority happen over the oceans or uninhabited areas. Thanks for the interesting article. Bob Clark _________________ Nanotechnology now can produce the space elevator and private orbital launchers. It now also makes possible the long desired 'flying cars'. This crowdfunding campaign is to prove it: Nanotech: from air to space. https://www.indiegogo.com/projects/nano ... 13319568#/ |
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Lourens wrote: The harder you look, the more you see. I don't think we can draw the conclusion that there are more meteor events than there used to be, unless we can somehow credibly estimate the extent of and compensate for the enormous increase in recording and communication capabilities of our species. We have a similar thing in ecology: most species of organisms are observed and recorded more often now than they ever have been in the past, but if you take out the observation bias, they're actually mostly in decline. The same could easily be true for meteor events. Yes its not that not that there are more meteor events its that with better data it looks like the bigger ones happen more often than previously thought. I think with the satellite imagery of recent years we have been finding scars in jungles and deserts and have been roughly able to date them so that what were once thought to be once in a thousand year events could be once in a hundred year events. With the random nature of these things it could be that we have just been unlucky with a cluster of them in the last century. Or we could be considered to be exceedingly lucky as the big ones have left streaks of glass in deserts and killed a few trees in Siberia along with some in a few jungles. _________________ Someone has to tilt at windmills. So that we know what to do when the real giants come!!!! |
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Space Walker ![]() ![]()
Joined: Sat Jul 01, 2006 12:18 am
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If these large bolide impacts occur more frequently than thought, that is also a worrisome possibility.
Bob Clark _________________ Nanotechnology now can produce the space elevator and private orbital launchers. It now also makes possible the long desired 'flying cars'. This crowdfunding campaign is to prove it: Nanotech: from air to space. https://www.indiegogo.com/projects/nano ... 13319568#/ |
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