{"id":1794,"date":"2011-09-07T17:55:53","date_gmt":"2011-09-07T21:55:53","guid":{"rendered":"http:\/\/swling.com\/blog\/?p=1794"},"modified":"2011-09-07T18:06:46","modified_gmt":"2011-09-07T22:06:46","slug":"listen-to-asteroid-echos-november-8th-9th","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2011\/09\/listen-to-asteroid-echos-november-8th-9th\/","title":{"rendered":"Listen to asteroid echos November 8th-9th"},"content":{"rendered":"
\"\"

The massive Green Bank Telescope will be listening for CW tuned to put the asteroid's echo at a constant 2380 MHz (Photo Source: NRAO \/ AUI \/ NSF)<\/p><\/div>\n

The excellent Southgate ARC<\/a> has posted information on receiving signals that the\u00a0Arecibo Observatory<\/a>, the Deep Space Network Goldstone facility<\/a>, the Green Bank Telescope<\/a> and the Very Long Baseline Array<\/a> will be bouncing off of the near-Earth asteroid 2005 YU55.<\/p>\n

The asteroid\u00a0will be making a 0.85 lunar distance flyby of Earth on November 8.<\/p>\n

While the listening frequencies are well above the HF (shortwave) spectrum, many of you may have wide-band receivers or ham radio equipment that could tune in the signals. So, apologies for this slightly off-topic post.<\/em> The amateur radio\u00a0astronomer\u00a0in me couldn’t help but promote this rather cool and unique opportunity.<\/p>\n

From Southgate ARC<\/strong>:<\/p>\n

Because YU55 will be so close to Earth, its radar echo will be\u00a0detectable with even small antennas (~1 m^2). YU55’s echo will be a slowly drifting signal with a bandwidth of ~1 Hz within a few kHz of 2380 MHz or 8560 MHz.<\/p>\n

[…]On November 8, 2011, 19:15 – 19:30 UTC, Arecibo will be transmitting a continuous wave tuned to put the asteroid’s echo at a constant 2380.000000 MHz at the Green Bank Telescope. Observers elsewhere on Earth will see the echo within 2 kHz of 2380 MHz, Doppler-shifted by the Earth’s rotation. It will be slowly drifting in frequency and have a bandwidth of ~0.6 Hz.<\/p>\n

On November 9, 2011, 01:30 – 02:00 UTC, the Goldstone Deep Space Network facility will be be transmitting a continuous wave tuned to put the asteroid’s echo a constant 8560.000000 MHz at a second antenna at the Goldstone site. Other observers may see the echo shifted by as much as 6 kHz, and it will have a bandwidth of ~2 Hz.<\/p><\/blockquote>\n

Read the full article on the Southgate ARC website.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

The excellent Southgate ARC has posted information on receiving signals that the\u00a0Arecibo Observatory, the Deep Space Network Goldstone facility, the Green Bank Telescope and the Very Long Baseline Array will be bouncing off of the near-Earth asteroid 2005 YU55. The asteroid\u00a0will be making a 0.85 lunar distance flyby of Earth on November 8. While the […]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[8,81,3,554],"tags":[578,582,577,583,584,579,581,4082,580,585],"class_list":["post-1794","post","type-post","status-publish","format-standard","hentry","category-articles","category-current-events","category-news","category-slightly-off-topic","tag-2005-yu55","tag-arecibo-observatory","tag-asteroid","tag-deep-space-network-goldstone","tag-green-bank-telescope","tag-nrao","tag-radio-astronomy","tag-shortwave-radio","tag-southgate-arc","tag-very-long-baseline-array"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-sW","jetpack-related-posts":[{"id":47507,"url":"https:\/\/swling.com\/blog\/2021\/02\/radio-waves-nrao-turns-scope-into-planetary-radar-wbcq-seeks-engineers-deep-space-network-upgrades-and-2021-propagation-summit\/","url_meta":{"origin":1794,"position":0},"title":"Radio Waves: NRAO Turns Scope System Into Planetary Radar, WBCQ Seeks Engineers, Deep Space Network Upgrades, and 2021 Propagation Summit","author":"Thomas","date":"February 1, 2021","format":false,"excerpt":"Radio Waves:\u00a0 Stories Making Waves in the World of Radio Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest\u00a0SWLing Post\u00a0readers.\u00a0 To that end:\u00a0Welcome to the\u00a0SWLing Post\u2019s Radio Waves, a\u2026","rel":"","context":"In "Ham Radio"","block_context":{"text":"Ham Radio","link":"https:\/\/swling.com\/blog\/category\/ham-radio\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/01\/5meterSAR_Apollo15-copy-1024x1024-1-e1611858982228.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/01\/5meterSAR_Apollo15-copy-1024x1024-1-e1611858982228.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/01\/5meterSAR_Apollo15-copy-1024x1024-1-e1611858982228.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/01\/5meterSAR_Apollo15-copy-1024x1024-1-e1611858982228.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":11102,"url":"https:\/\/swling.com\/blog\/2014\/10\/living-in-a-national-radio-quiet-zone\/","url_meta":{"origin":1794,"position":1},"title":"Living in a National Radio Quiet Zone","author":"Thomas","date":"October 15, 2014","format":false,"excerpt":"Many thanks to SWLing Post reader, Paul, who shares this National Geographic video about Green Bank, West Virginia, USA--home of the National Radio Astronomy Observatory (NRAO): My wife and I took a camping trip to\u00a0Green Bank in the late 1990s when the massive Green Bank Telescope was about 80% complete.\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"The Green Bank Telescope: An impressive parabolic dish covering 2.3 acres, the GBT has the largest collecting area of any fully-steerable telescope in the world. (Photo: R. 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Others\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/01\/Arecibo_Observatory_Aerial_View-e1484486432239.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/01\/Arecibo_Observatory_Aerial_View-e1484486432239.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/01\/Arecibo_Observatory_Aerial_View-e1484486432239.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/01\/Arecibo_Observatory_Aerial_View-e1484486432239.jpg?resize=700%2C400 2x"},"classes":[]},{"id":28619,"url":"https:\/\/swling.com\/blog\/2017\/10\/hurricane-damages-arecibo-radio-telescope\/","url_meta":{"origin":1794,"position":3},"title":"Hurricane Damages Arecibo Radio Telescope","author":"Thomas","date":"October 2, 2017","format":false,"excerpt":"(Source: National Geographic via Eric WD8RIF) Hurricane Damages Giant Radio Telescope\u2014Why It Matters\" at National Geographic, written by the daughter of Frank Drake, pioneer SETI investigator: Scientists and ham radio operators have confirmed that the Arecibo Observatory in Puerto Rico\u2014arguably the world\u2019s most iconic radio telescope, which has a dish\u2026","rel":"","context":"In "Broadcasters"","block_context":{"text":"Broadcasters","link":"https:\/\/swling.com\/blog\/category\/broadcasters\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/01\/Arecibo_Observatory_Aerial_View-e1484486432239.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/01\/Arecibo_Observatory_Aerial_View-e1484486432239.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/01\/Arecibo_Observatory_Aerial_View-e1484486432239.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/01\/Arecibo_Observatory_Aerial_View-e1484486432239.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":46948,"url":"https:\/\/swling.com\/blog\/2020\/12\/video-physicist-reminisces-about-arecibo-radio-telescope\/","url_meta":{"origin":1794,"position":4},"title":"Video: Physicist reminisces about Arecibo Radio Telescope","author":"Thomas","date":"December 16, 2020","format":false,"excerpt":"Many thanks to SWLing Post contributor, TomL, who shares the following: I came across this youtube video about a physicist who worked there in his early years and gives this tribute to his time there. 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