{"id":480,"date":"2009-07-21T03:48:16","date_gmt":"2009-07-21T03:48:16","guid":{"rendered":"http:\/\/perezmedia.net\/beltofvenus\/2009\/07\/21\/jupiter_and_imp\/"},"modified":"2021-11-28T01:22:49","modified_gmt":"2021-11-28T01:22:49","slug":"jupiter_and_imp","status":"publish","type":"post","link":"https:\/\/perezmedia.net\/beltofvenus\/2009\/07\/21\/jupiter_and_imp\/","title":{"rendered":"Jupiter and Impact Scar – JUL 21, 2009 07:20 UT"},"content":{"rendered":"
\"Sketch<\/a><\/p>\n

Sketch of Jupiter with Impact Scar<\/p>\n

Click image to view larger version.<\/i><\/p>\n<\/div>\n

Observation Notes:<\/b><\/p>\n

On July 19, 2009, amateur astronomer and planetary imager, Anthony Wesley discovered<\/a> a striking new feature on Jupiter. A dark spot had suddenly appeared in the south polar region. Although it might have been a new weather feature, it actually appeared very similar to the impact scars created when fragments of comet Shoemaker-Levy 9 struck Jupiter in July of 1994<\/a>. Quick analysis by professional observatories confirmed<\/a> that this new feature was indeed an impact scar.<\/p>\n

Sleep deprivation and heavy clouds prevented me from attempting it visually on the morning of July 20th. But tonight I was able to spend time with Jupiter in hopes of seeing the feature as it transited a little after midnight local time (July 21). As the scope cooled down, I worked on adjusting my eyes to details in the cloud belts. By 12:10 AM, the seeing was improving, and Jupiter had rotated enough to make it clear that I was detecting a soft, dark spot near the southern pole. Through our own fluttering atmosphere, I was actually seeing the debris cloud of an immense impact on Jupiter that had happened perhaps as recently as two days ago.<\/p>\n

Over the next 45 minutes, I sketched the position of the impact scar, and all the other features I could detect. In that time, the spot transited Jupiter and crept along steadily with planet’s rapid rotation. At times I’ve wished that I had taken up observing sooner so that I could have seen Shoemaker-Levy 9 pepper Jupiter with my own eyes. And what do you know, 15 years later, it’s been hit again.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Subject<\/b><\/td>\nJupiter with Impact Scar<\/td>\n<\/tr>\n
Classification<\/b><\/td>\nPlanet<\/td>\n<\/tr>\n
Position*<\/b><\/td>\nCapricornus [RA: 21:50:07.2 \/ Dec: -14:10:38]<\/td>\n<\/tr>\n
Size*<\/b><\/td>\n48 arcseconds (Equatorial diameter)<\/td>\n<\/tr>\n
Brightness*<\/b><\/td>\n-2.8<\/td>\n<\/tr>\n
Date\/Time<\/b><\/td>\nJUL 21, 2009, 12:20 – 1:05 AM
\n(JUL 21, 2009, 07:20 – 08:05 UT)<\/td>\n<\/tr>\n
Observing Loc.<\/b><\/td>\nFlagstaff, Arizona, USA – Home<\/td>\n<\/tr>\n
Instrument<\/b><\/td>\nOrion SkyQuest XT8 Dobsonian (203 mm dia.\/1200 mm F\/L)<\/td>\n<\/tr>\n
Eyepieces\/Mag.<\/b><\/td>\nPentax XW10 + 2X Barlow (240X)<\/td>\n<\/tr>\n
Conditions<\/b><\/td>\nMostly clear, humid<\/td>\n<\/tr>\n
Seeing<\/b><\/td>\nAnt. III<\/td>\n<\/tr>\n
Transparency<\/b><\/td>\nMag 5.8 NELM<\/td>\n<\/tr>\n
*Sources<\/b><\/td>\nStarry Night Pro Plus 5.8.2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Sketch of Jupiter with Impact Scar Click image to view larger version. Observation Notes: On July 19, 2009, amateur astronomer and planetary imager, Anthony Wesley discovered a striking new feature on Jupiter. A dark spot had suddenly appeared in the south polar…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[44,68,69,15],"tags":[],"class_list":["post-480","post","type-post","status-publish","format-standard","hentry","category-planetary","category-sg-jupiter","category-sg-planetary","category-sketch-gallery"],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":481,"url":"https:\/\/perezmedia.net\/beltofvenus\/2009\/07\/23\/jupiter_impact\/","url_meta":{"origin":480,"position":0},"title":"Jupiter, Impact Scar, Callisto, and Shadow Transit – JUL 23, 2009 09:00 UT","author":"jperez1690","date":"July 23, 2009","format":false,"excerpt":"Sketch of Jupiter, Callisto, Impact Scar and Shadow Transit Click image to view larger version. Observation Notes: Jupiter put on a great show tonight! The impact feature is still hanging on and was readily visible through my 8 inch Dob at 120X and 240X. The best part was the addition\u2026","rel":"","context":"In "Planetary"","block_context":{"text":"Planetary","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/planetary\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":483,"url":"https:\/\/perezmedia.net\/beltofvenus\/2009\/08\/27\/jupiter_with_tr\/","url_meta":{"origin":480,"position":1},"title":"Jupiter and Transits – AUG 27, 2009 04:45 UT","author":"jperez1690","date":"August 27, 2009","format":false,"excerpt":"Sketch of Jupiter, Europa + Shadow, Ganymede + Shadow, and Io Move mouse over image to view labels. Click to view larger version. Observation Notes: I enjoyed a beautiful dance between Jupiter, three moons and two shadows. 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