Автор Олег, 01.05.2017 21:04:25
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Цитата: Старый от 21.06.2021 10:24:40Ворлдвью-4 2016-067А/41848 330х342 км.Космос-1437 1983-003А/13770 337х343 кмКосмос-2519 2017-037А/42798 291х454 кмКосмос-1783 1986-075А/16993 139х11139 км
ЦитатаDave Dickinson @AstroguyzIt's down. The KZ-1A rocket booster (COSPAR ID 2018-075B) reentered today at 2:54 UT+/-1 minute over the high Arctic under daytime skies: https://aerospace.org/reentries/kz-1a-rb-id-43637
ЦитатаDave Dickinson @AstroguyzAlso down: @SpaceX's #Starlink-1025 (COSPAR ID 2019-074T), which reentered earlier today at 6:26 UT+/- 1 minute over the South Pacific under nighttime skies: https://aerospace.org/reentries/starlink-1025-id-44730
ЦитатаJonathan McDowell @planet4589NASA's S-3C scientific satellite, the Energetic Particles Explorer D, named Explorer 26 after launch was launched on 1964 Dec 21 into an elliptical 310 x 26200 km x 20.1 deg orbit and operated for 2.4 years. Satcat number 963, it reentered 2021 Aug 23 after 56.7 years in space..Here's the apogee and perigee versus time, showing some interesting lunisolar perturbations. The orbital data from mid 1965 to mid 1971 is missing from the archive, let me know if you have it... .Actually I'm not sure those perturbations are lunisolar, they might be some resonance with the Earth's spherical harmonics or something - they look rather odd.
ЦитатаDave Dickinson @AstroguyzStarlink-1778 (COSPAR ID 2020-073P) reentered on September 4th at 19:04 UT+/-19 minutes over the Atlantic under daytime skies, and Starlink-1796 (COSPAR ID 2020-073AD) reentered on September 6th at 17:01UT +/-7 minutes near the same site: https://aerospace.org/reentries
ЦитатаJonathan McDowell @planet4589Starlink 1937 reentered over Andhra Pradesh, India around 0214 UTC Sep 11; it was removed from the constellation on May 13.
ЦитатаJonathan McDowell @planet4589Starlink 1768 reentered at about 1220 UTC Sep 12;it was launched a year ago and was in the operational layer for only 2 months
ЦитатаDave Dickinson @Astroguyz3x @SpaceX satellites came down yesterday: first up: #Starlink-1768 reentered at 12:21 UT+/- 13 minutes over the Pacific under nighttime skies: https://aerospace.org/reentries/starlink-1768-id-46381-reentered.2 of 3: @SpaceX's #Starlink-1632 (COSPAR ID 2020-057BF) reentered yesterday at 20:43 UT +/- 1 minute over the Bay of Bengal under nighttime skies: https://aerospace.org/reentries/starlink-1632-id-46170-reentered.(3 of 3) @SpaceX's #Starlink-1787 (COSPAR ID 2020-088D) reentered yesterday at 21:22 UT+/-2 minutes off the southern tip of South America under daytime skies: https://aerospace.org/reentries/starlink-1787-id-47125-reentered
Цитата Jonathan McDowell @planet4589Starlink 1095, launched in Jan 2020, stopped stationkeeping in the 550 km constellation on 2021 Jan 18 and began uncontrolled decay until May 6 when active orbit lowering began. The satellite was decomissioned in a 300 km orbit on Sep 10 and reentered early today, Sep 20