{"id":14443,"date":"2017-05-31T11:51:01","date_gmt":"2017-05-31T15:51:01","guid":{"rendered":"http:\/\/hobbyspace.com\/Blog\/?p=14443"},"modified":"2017-05-31T11:51:28","modified_gmt":"2017-05-31T15:51:28","slug":"videos-ride-along-with-juno-as-it-flies-by-jupiters-swirling-clouds","status":"publish","type":"post","link":"https:\/\/hobbyspace.com\/Blog\/?p=14443","title":{"rendered":"Videos: Ride along with Juno as it flies by Jupiter&#8217;s swirling clouds"},"content":{"rendered":"<p>The <a href=\"https:\/\/www.missionjuno.swri.edu\/\" target=\"_d\">Juno probe<\/a>\u00a0is in a wide elliptical orbit around Jupiter that sends it way out into space far from the gas giant at one end of the ellipse and then down close to the cloud tops at the other. Below are videos showing imagery of Jupiter, enhanced to bring out the cloud patterns, as if one were riding on the spacecraft during its most recent two passes close to the planet:<\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"1600\" height=\"900\" src=\"https:\/\/www.youtube.com\/embed\/AuOy-shbQuM?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=en&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"1600\" height=\"900\" src=\"https:\/\/www.youtube.com\/embed\/EGpYlswczC0?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=en&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p>Here is a diagram of Juno&#8217;s orbit:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"14445\" data-permalink=\"https:\/\/hobbyspace.com\/Blog\/?attachment_id=14445\" data-orig-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/05\/orbits_diagram_apojove0feature_01.jpg\" data-orig-size=\"1685,948\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Juno Orbits\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/05\/orbits_diagram_apojove0feature_01-1024x576.jpg\" class=\"aligncenter size-large wp-image-14445\" src=\"http:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/05\/orbits_diagram_apojove0feature_01-1024x576.jpg\" alt=\"\" width=\"520\" height=\"293\" srcset=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/05\/orbits_diagram_apojove0feature_01-1024x576.jpg 1024w, https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/05\/orbits_diagram_apojove0feature_01-300x169.jpg 300w, https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/05\/orbits_diagram_apojove0feature_01-768x432.jpg 768w, https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/05\/orbits_diagram_apojove0feature_01.jpg 1685w\" sizes=\"auto, (max-width: 520px) 100vw, 520px\" \/><\/p>\n<p>The\u00a0orbit lasts 53.5 days. The original plan was to fire the spacecraft&#8217;s main engine to\u00a0make the orbit more circular and smaller so that it\u00a0\u00a0lasted only 14 days (shown by the set of green-blue orbits in the diagram). However, problems with the engine valves led mission managers to decide it was safest to leave the spacecraft in the original wide orbit.<\/p>\n<p>When a satellite is in <a href=\"https:\/\/en.wikipedia.org\/wiki\/Orbit\" target=\"_blank\" rel=\"noopener noreferrer\">orbit<\/a> around earth, the two extremes of the orbital ellipse are referred to as apogee (farthest from earth) and perigee\u00a0(closest to earth). As explained <a href=\"https:\/\/en.oxforddictionaries.com\/definition\/apogee\" target=\"_blank\" rel=\"noopener noreferrer\">in the Oxford dictionary<\/a>, &#8220;gee&#8221; derives as follows:<\/p>\n<p style=\"padding-left: 30px;\"><em>from French apog\u00e9e or modern Latin apogaeum, from Greek apogaion (diast\u0113ma), \u2018(distance) away from earth\u2019, from apo \u2018from\u2019 + gaia, g\u0113 \u2018earth\u2019.<\/em><\/p>\n<p>So for an orbit around Jupiter, the terms have been replaced with apojove and perijove, using the Latin word Jove for Jupiter.<\/p>\n<p>Note that it was <a href=\"https:\/\/en.wikipedia.org\/wiki\/Kepler%27s_laws_of_planetary_motion\" target=\"_blank\" rel=\"noopener noreferrer\">discovered by Kepler<\/a> that orbits were ellipses rather than circles. He also noticed that an object in <a href=\"https:\/\/en.wikipedia.org\/wiki\/Orbit\" target=\"_blank\" rel=\"noopener noreferrer\">orbit<\/a> around\u00a0a large body will move fastest at the low point\u00a0and slowest at the high point in the ellipse.\u00a0(Newton later used his calculus math tools with the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Newton%27s_laws_of_motion\" target=\"_blank\" rel=\"noopener noreferrer\">laws of motion<\/a> and the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Newton%27s_law_of_universal_gravitation\" target=\"_blank\" rel=\"noopener noreferrer\">inverse squared law of gravity<\/a> to explain these key features of orbital mechanics.) So Juno&#8217;s passes above the cloud tops very quickly at perijove and then takes a long slow trip up to apojove and back.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Juno probe\u00a0is in a wide elliptical orbit around Jupiter that sends it way out into space far from the gas giant at one end of the ellipse and then down close to the cloud tops at the other. Below are videos showing imagery of Jupiter, enhanced to bring out the cloud patterns, as if &hellip; <a href=\"https:\/\/hobbyspace.com\/Blog\/?p=14443\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Videos: Ride along with Juno as it flies by Jupiter&#8217;s swirling clouds<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","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":""},"categories":[87,36],"tags":[],"class_list":["post-14443","post","type-post","status-publish","format-standard","hentry","category-et-al","category-multiple-media"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p34aWK-3KX","jetpack-related-posts":[{"id":14403,"url":"https:\/\/hobbyspace.com\/Blog\/?p=14403","url_meta":{"origin":14443,"position":0},"title":"Juno: Completes 5th low pass over Jupiter + More citizen scientist images","author":"TopSpacer","date":"May 23, 2017","format":false,"excerpt":"Citizen scientist Bjorn Jonsson made this beautiful picture of a spot on Jupiter by applying image processing techniques on an photo taken by the Juno spacecraft, which is currently in orbit around the gas giant. And another Juno image from someone with the tag:\u00a0Ossietzky-68: Raw images from JunoCam that the\u00a0public\u2026","rel":"","context":"In &quot;Gas giants Saturn, Jupiter, et al&quot;","block_context":{"text":"Gas giants Saturn, Jupiter, et al","link":"https:\/\/hobbyspace.com\/Blog\/?cat=87"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/05\/pia21391_520x385.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":12850,"url":"https:\/\/hobbyspace.com\/Blog\/?p=12850","url_meta":{"origin":14443,"position":1},"title":"Video: NASA TV coverage of arrival of Juno probe at Jupiter","author":"TopSpacer","date":"July 4, 2016","format":false,"excerpt":"NASA's Juno spacecraft will fire its engine to go into orbit around Jupiter this evening:\u00a0Live coverage: Juno spacecraft hours away from arriving at Jupiter \u2013 Spaceflight Now By the time engineers on Earth receive confirmation of the start of Juno's one-shot Jupiter Orbit Insertion burn at 11:18 p.m. EDT (0318\u2026","rel":"","context":"In &quot;Gas giants Saturn, Jupiter, et al&quot;","block_context":{"text":"Gas giants Saturn, Jupiter, et al","link":"https:\/\/hobbyspace.com\/Blog\/?cat=87"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/kjfQCTat-8s\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":12852,"url":"https:\/\/hobbyspace.com\/Blog\/?p=12852","url_meta":{"origin":14443,"position":2},"title":"Juno successfully enters orbit around Jupiter","author":"TopSpacer","date":"July 5, 2016","format":false,"excerpt":"[ Update: Here is a video of the jubilant briefing held shortly after it was confirmed that the spacecraft was in orbit around Jupiter: https:\/\/youtu.be\/LH_uPWU5V3o ] NASA's\u00a0Juno spacecraft successfully fired its engine and went\u00a0into orbit around Jupiter: NASA's Juno Spacecraft in Orbit Around Mighty Jupiter After an almost five-year journey\u2026","rel":"","context":"In &quot;Gas giants Saturn, Jupiter, et al&quot;","block_context":{"text":"Gas giants Saturn, Jupiter, et al","link":"https:\/\/hobbyspace.com\/Blog\/?cat=87"},"img":{"alt_text":"PIA20703_1400[1]","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2016\/07\/PIA20703_14001-1024x527.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":12819,"url":"https:\/\/hobbyspace.com\/Blog\/?p=12819","url_meta":{"origin":14443,"position":3},"title":"Juno nears Jupiter for July 4th orbit insertion + Jupiter images from ESO&#8217;s Very Large Telescope","author":"TopSpacer","date":"June 27, 2016","format":false,"excerpt":"NASA's Juno spacecraft, which launched on August 5, 2011,\u00a0will arrive\u00a0at Jupiter on July 4th. It will then\u00a0fire its engine to go into a polar orbit around the solar system's largest planet: \u00a0NASA's Juno Spacecraft Closing in on Jupiter -\u00a0NASA. Juno took this picture of Jupiter's Moons on June 21: Here\u2026","rel":"","context":"In &quot;Gas giants Saturn, Jupiter, et al&quot;","block_context":{"text":"Gas giants Saturn, Jupiter, et al","link":"https:\/\/hobbyspace.com\/Blog\/?cat=87"},"img":{"alt_text":"pia16869[1]","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2016\/06\/pia168691-300x267.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":12839,"url":"https:\/\/hobbyspace.com\/Blog\/?p=12839","url_meta":{"origin":14443,"position":4},"title":"Videos: Update on Juno mission to Jupiter + Apple documentary","author":"TopSpacer","date":"July 1, 2016","format":false,"excerpt":"The Juno probe\u00a0is set to go into orbit around Jupiter on Monday (see earlier posting here):\u00a0NASA\u2019s Juno to Kick into Planned Autopilot for July 4 Jupiter Burn -\u00a0NASA. 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