{"id":11889,"date":"2017-03-01T23:10:46","date_gmt":"2017-03-01T22:10:46","guid":{"rendered":"http:\/\/karmaka.de\/?p=11889"},"modified":"2017-03-01T23:10:46","modified_gmt":"2017-03-01T22:10:46","slug":"comparing-eyewitness-derived-trajectories-of-bright-meteors-to-instrumentally-observed-data","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=11889","title":{"rendered":"Comparing eyewitness-derived trajectories of bright meteors to instrumentally-observed data"},"content":{"rendered":"<p>D.E. Moser<\/p>\n<p>Planetary and Space Science<br \/>\nIn Press, Accepted Manuscript, Available online 1 March 2017<\/p>\n<p><a href=\"http:\/\/www.sciencedirect.com\/science\/article\/pii\/S0032063316302288\" target=\"_blank\"><strong>LINK<\/strong><\/a><\/p>\n<p>&#8220;Highlights<br \/>\n\u2022    A tool to calculate crude meteor trajectories from eyewitness reports is described.<br \/>\n\u2022    The tool&#8217;s performance is evaluated by comparing to instrumental meteor data.<br \/>\n\u2022    33 test cases with both eyewitness and instrumental data are evaluated.<br \/>\n\u2022    Results for cases with 75+ eyewitness reports are considered well-characterized.<br \/>\n\u2022    Eyewitness-derived meteor heights trend high and are often unrealistic.&#8221;<\/p>\n<p>&#8220;The NASA Meteoroid Environment Office (MEO) is often called upon to analyze meteors of public interest observed over the United States. Data from meteor networks are often utilized to accomplish this, as are recordings from the general public. When these methods fail, eyewitness reports are the only resource which can be leveraged. The MEO developed a tool to crudely calculate the trajectories of bright meteors from the eyewitness reports submitted to the American Meteor Society. The tool was tested on eyewitness data for 33 cases and compared to observed data from the NASA All Sky Fireball Network. The tool performed better for cases with more than 75 eyewitness reports than those with fewer than 75, by almost a factor of two across all metrics except for the end height. For these cases, the eyewitness-derived trajectory was about 50 km from the observed trajectory, the radiant was within 15\u00b0, and the speed was within 20% of that observed on average. A description of the tool, example case studies, and general trends are described.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>D.E. Moser Planetary and Space Science In Press, Accepted Manuscript, Available online 1 March 2017 LINK &#8220;Highlights \u2022 A tool to calculate crude meteor trajectories from eyewitness reports is described. \u2022 The tool&#8217;s performance is&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[96,97],"tags":[118,3696,98,141,3662],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/11889"}],"collection":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11889"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/11889\/revisions"}],"predecessor-version":[{"id":11890,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/11889\/revisions\/11890"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11889"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11889"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11889"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}