{"id":2748,"date":"2022-01-24T04:57:13","date_gmt":"2022-01-24T09:57:13","guid":{"rendered":"https:\/\/www.space-data.org\/sda\/?p=2748"},"modified":"2026-08-06T06:33:26","modified_gmt":"2026-08-06T10:33:26","slug":"sda-and-comspoc-work-together-to-produce-relevant-analysis-of-leo-safety","status":"publish","type":"post","link":"https:\/\/www.space-data.org\/sda\/blog\/sda-and-comspoc-work-together-to-produce-relevant-analysis-of-leo-safety\/","title":{"rendered":"SDA and COMSPOC work together to produce relevant analysis of LEO safety"},"content":{"rendered":"<div class=\"et_pb_section_0 et_pb_section et_section_regular et_block_section\"><div class=\"et_pb_row_0 et_pb_row et_block_row\"><div class=\"et_pb_column_0 et_pb_column et_pb_column_4_4 et-last-child et_block_column et_pb_css_mix_blend_mode_passthrough\"><div class=\"et_pb_text_0 et_pb_text et_pb_bg_layout_light et_pb_module et_block_module\"><div class=\"et_pb_text_inner\"><p><span>In this statistical study conducted by Dan Oltrogge (SDC Project Manager), Pascal Wauthier (SDA Chairman) et al, historical data collected by SDC and SOCRATES were analyzed to characterize increases in the rate of close approaches in LEO. <\/span><\/p>\n<p><span>While the SDC and SOCRATES databases have sampling limitations in terms of altitude and population representativeness, they are a good source for such research since they keep data for several years.\u00a0 Also, the SDC contains orbital data provided by spacecraft operators and normalized by the SDC system and as such has data that is realistic and reliable.<\/span><\/p>\n<p><span>The authors also employed COMSPOC\u2019s Number of Encounter Analysis Tool (<a href=\"https:\/\/comspoc.com\/neat\/\">NEAT<\/a>) to compute a long-term probability of encounter in LEO.\u00a0 All data were normalized to 1 km proximity and numbers of encounter per month. <\/span><\/p>\n<p><span>In doing so, they found that in 2017 SOCRATES and SDC archived data maps to approximately 1400 and 2400 close approaches below 1 km per month, respectively. \u00a0In contrast, these systems indicate in 2021 there may be as many as \u00a06000 close approaches for the same criteria. The situation may be even more critical in regions where large constellations such as Starlink reside. <\/span><\/p>\n<\/div><\/div><div class=\"et_pb_image_0 et_pb_image et_pb_module et_block_module\"><span class=\"et_pb_image_wrap\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2022\/01\/sda.png\" width=\"568\" height=\"392\" srcset=\"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2022\/01\/sda.png 568w, https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2022\/01\/sda-480x331.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 568px, 100vw\" class=\"wp-image-2751\" \/><\/span><\/div><div class=\"et_pb_text_1 et_pb_text et_pb_bg_layout_light et_pb_module et_block_module\"><div class=\"et_pb_text_inner\"><p><span>This study demonstrates the importance of having a more robust SSA system that works to collaboratively fuse data to guarantee realistic and reliable close approach predictions and information to properly assess critical situations. <\/span><\/p>\n<p><span>See more details <\/span><span><a href=\"https:\/\/comspoc.com\/Resources\/Papers\/20211029_Eval_of_LEO_Conj_Rates_IAC_Dubai_PREPRINT.pdf\">here<\/a><\/span><\/p>\n<\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":48,"featured_media":2645,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"footnotes":""},"categories":[36],"tags":[],"formats":[],"class_list":["post-2748","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"dsm_author":{"name":"Helen Weedon","avatar_url":"\/\/www.space-data.org\/sda\/wp-content\/uploads\/wpforo\/avatars\/hweedon_48.png","archive_link":"https:\/\/www.space-data.org\/sda\/author\/hweedon\/","biodata":"Radical Moves"},"dsm_categories":[{"term_name":"Blog","term_id":36,"term_link":"https:\/\/www.space-data.org\/sda\/category\/blog\/"}],"dsm_attachment_categories":[],"dsm_featured_image":{"thumbnail":"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2021\/10\/Featured-Image-150x150.png","medium":"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2021\/10\/Featured-Image-300x183.png","medium_large":"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2021\/10\/Featured-Image-768x469.png","large":"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2021\/10\/Featured-Image-1024x625.png","1536x1536":"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2021\/10\/Featured-Image-1536x937.png","2048x2048":"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2021\/10\/Featured-Image.png","et-pb-post-main-image":"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2021\/10\/Featured-Image-400x250.png","et-pb-post-main-image-fullwidth":"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2021\/10\/Featured-Image-1080x675.png","et-pb-portfolio-image":"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2021\/10\/Featured-Image-400x284.png","et-pb-portfolio-module-image":"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2021\/10\/Featured-Image-510x382.png","et-pb-portfolio-image-single":"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2021\/10\/Featured-Image-1080x659.png","et-pb-gallery-module-image-portrait":"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2021\/10\/Featured-Image-400x516.png","et-pb-post-main-image-fullwidth-large":"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2021\/10\/Featured-Image.png","et-pb-image--responsive--desktop":"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2021\/10\/Featured-Image-1280x720.png","et-pb-image--responsive--tablet":"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2021\/10\/Featured-Image-980x551.png","et-pb-image--responsive--phone":"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2021\/10\/Featured-Image-480x270.png","full":"https:\/\/www.space-data.org\/sda\/wp-content\/uploads\/2021\/10\/Featured-Image.png"},"dsm_comment_count":0,"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - 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