Kolejna paczka Starlinków03.09.2020 o 12:46:14,489 z KSC wystartowała RN Falcon-9R. Wyniosła ona w T+8' 55" na orbitę o parametrach: hp=190 km, ha=380 km, i=53,00° 60 satelitów Starlink (misja Starlink 12/v1.0 L11).
Pierwszy stopień RN (B1060.2) w T+8' 45" wylądował na barce ASDS OCISLY na Atlantyku.
http://lk.astronautilus.pl/n200901.htm#02SpaceX Starlink 12 launch & Falcon 9 first stage landing, 3 September 20201811 wyświetleń•3 wrz 2020
Start Falcona 9 z dwunastą paczką satelitów Starlink BY KRZYSZTOF KANAWKA ON 3 WRZEŚNIA 2020
Dwunasta paczka satelitów Starlink tuż po uwolnieniu / Credits - SpaceX(...) W tym locie użyto innej formy uwolnienia satelitów Starlink. Po zakończeniu pracy drugi stopień został wprowadzony w ruch obrotowy. Dzięki temu przy uwolnieniu satelity Starlink uzyskały lepszą pozycję względem siebie, choć niektóre ujęcia po uwolnieniu zdają się sugerować możliwość zetknięcia się satelitów ze sobą. (...)
https://kosmonauta.net/2020/09/start-falcona-9-z-dwunasta-paczka-satelitow-starlink/#prettyPhotoSpaceX launches more Starlink satellites, beta testing well underwaySeptember 3, 2020 Stephen Clark
A Falcon 9 rocket lifts off from pad 39A Thursday with 60 more Starlink satellites. Credit: SpaceX(...) The propulsive pinpoint landing marked the 60th time SpaceX has recovered a Falcon 9 booster, and it completed the second trip to space and back for the specific rocket flown Thursday. (...)
After their deployment from the Falcon 9 rocket, the Starlink satellites were expected to extend solar panels and activate krypton ion thrusters to begin raising their orbit to the Starlink network’s operational shell roughly 341 miles (550 kilometers) above Earth. (...)
With the 60 fresh satellites launched Thursday, SpaceX has delivered 713 Starlink satellites to orbit on 12 Falcon 9 rocket missions since May 2019. Some of the satellites, including those on the first Starlink launch last May, are being moved to lower altitudes and deorbited. (...)
Hofeller said last month that SpaceX is building six Starlink spacecraft per day, and plans to launch Starlink missions at intervals of every two to three weeks until completing the initial Starlink network of around 1,440 satellites. (...)
He [Hofeller] declined to comment on when SpaceX might begin launching a new generation of Starlink satellites, or how many satellites SpaceX might eventually put into space. SpaceX calls the current satellites Version 1.0.
The company submitted filings with the International Telecommunication Union seeking authorization for up to 42,000 broadband satellites, beyond the 12,000 previously approved by the FCC. (...)
SpaceX introduced a darker coating on Starlink satellites earlier this year, and debuted a modified satellite design in June that incorporated a radio-transparent sunshade to make the spacecraft less reflective. Those efforts had some success, astronomers said last month they expect future Starlink satellites will be dim enough to avoid impacts on amateur astronomy and dark sky enthusiasts.
But professional astronomers working at the largest ground-based telescopes will still have to account for the Starlink satellites in their observations.
Astronomers on Aug. 25 announced
findings from a four-day virtual workshop arranged by the National Science Foundation and the American Astronomical Society to assess the impacts of tens of thousands of small low Earth orbit satellites on ground-based astronomy.
“As a result of this extensive study, we found that all optical astronomical observatories will be affected to some degree by light pollution caused by orbiting low Earth orbit satellites,” said Tony Tyson, a professor of physics at the University of California, Davis, and chief scientist for the Vera Rubin Observatory under construction in Chile. (...)
Astronomers said launching satellites below 373 miles, or 600 kilometers, would reduce the number of spacecraft visible in the sky at one time. SpaceX’s Starlink satellites fly lower than that threshold, but OneWeb’s fleet orbit at 745 miles, or 1,200 kilometers. (...)
https://spaceflightnow.com/2020/09/03/spacex-launches-more-starlink-satellites-beta-testing-well-underway/SpaceX Sets East Coast Falcon 9 Launch-to-Launch RecordBy Ben Evans, on September 3rd, 2020
Blackened and scorched from its second high-energy re-entry, B1060 is primed for a possible third launch. Photo Credit: SpaceXSpaceX has set a new record earlier today (Thursday, 3 September), by launching a pair of Falcon 9 boosters from the same coastline within four days of one another. Having missed out on the chance to fly twice inside nine hours on Sunday—thanks to the intractable Florida weather—the veteran B1060 core was instead trundled out to historic Pad 39A at the Kennedy Space Center (KSC) in Florida for another try on Tuesday, which was later moved to Thursday. (...)
Although a nine-hour interval between missions would have been truly spectacular, even flying again only 38 hours later at 9:29 a.m. EDT Tuesday SpaceX might have set a new personal-best for the shortest gap between two Falcon 9 launches. The current record is a little under 48 hours, set between the SSO-A SmallSat Express and the CRS-16 Dragon cargo missions—the first from Vandenberg Air Force Base, Calif., the second from Cape Canaveral Air Force Station, Fla.—back in December 2018. But despite their close temporal proximity, those two missions occurred on opposite sides of the United States, whereas SAOCOM-1B and Starlink were both set to fly from the Space Coast.
In any case, a 38-hour record did not transpire, for on Monday evening SpaceX announced that Starlink would slip to 8:46 a.m. EDT Thursday. “Team is using additional time for data review,” SpaceX explained via Twitter. However, even a Thursday morning launch still established a new record of three days, 13 hours and 28 minutes between Falcon 9 flights from Florida. This neatly eclipses the four days which elapsed between the flights of Dragon Endeavour from Pad 39A on 30 May and a batch of Starlinks from SLC-40 on 4 June. (...)
https://www.americaspace.com/2020/09/03/spacex-sets-east-coast-falcon-9-launch-to-launch-record/https://www.nasaspaceflight.com/2020/09/spacex-falcon-launch-starlink-11/https://eu.floridatoday.com/story/tech/science/space/2020/09/03/spacex-wakes-up-space-coast-starlink-launch-kennedy-space-center-florida/5631820002/statystyki startu
https://www.forum.kosmonauta.net/index.php?topic=4208.msg149927#msg149927AA
https://www.forum.kosmonauta.net/index.php?topic=3641.msg149934#msg149934https://space.skyrocket.de/doc_sdat/starlink-v1-0.htm