Editing IRAS (section)

==2020 near-miss==
On {{#time:j F Y, H:i:s e|2020-01-29T23:39:35.707+00:00}},<ref>{{cite tweet|user=LeoLabs_Space|number=1222304111527374853|date=29 January 2020|title=Our latest data on the IRAS / GGSE 4 event}}</ref> IRAS was expected to pass as closely as 12 meters <ref>{{cite tweet |user=LeoLabs_Space |number=1222547865567887361 |date = 29 January 2020 |title= Our latest update this morning for IRAS / GGSE 4 }}</ref> from the U.S. Air Force's Gravity Gradient Stabilization Experiment ([[GGSE-4]]) of 1967, another un-deorbited satellite left aloft; the 14.7-kilometer per second pass<ref>{{Cite web|url=https://www.space.com/satellite-near-collision-miss-over-pittsburgh.html|title=2 satellites will narrowly avoid colliding at 32,800 MPH over Pittsburgh on Wednesday|website=[[Space.com]] |date=28 January 2020}}</ref> had an estimated risk of collision of 5%. Further complications arose from the fact that GGSE-4 was outfitted with an 18 meter long stabilization boom that was in an unknown orientation and may have struck the satellite even if the spacecraft's main body did not.<ref>{{cite tweet |user=LeoLabs_Space |number=1222547875797880832 |date = 29 January 2020 |title= Adjusted calculations for larger object size }}</ref> Initial observations from amateur astronomers seemed to indicate that both satellites had survived the pass, with the California-based debris tracking organization LeoLabs later confirming that they had detected no new tracked debris following the incident.<ref>{{cite tweet|user=juliancd38|number=1222670217601601540|date=29 January 2020 |title=Trails of both IRAS and GGSE4 continue unimpeded after intersection}}</ref><ref>{{cite tweet|user=LeoLabs_Space|number=1222702184711757825|date=29 January 2020|title=Latest data following the event shows no evidence of new debris}}</ref>