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#100 by Steven Pietrobon on 18 Feb, 2023 03:27
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Cutoff. Nominal orbit insertion.
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#101 by Steven Pietrobon on 18 Feb, 2023 03:30
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Estimate supersynchronous orbit of 42,529 km apogee and 1701 m/s to GSO.
Enter initial perigee height (km): 259
Enter SpaceX speed (km/h): 35443
Enter initial orbit inclination (deg): 25
Estimated inertial speed = 10283.9 m/s
Estimated apogee height = 42528.6 km
Enter required inclination change (deg): 25
Enter final orbit height (km): -1
Geosynchronous altitude = 35786.0 km
Burn at 42528.6 km: theta1 = 24.31 deg, dv1 = 1583.2 m/s
Burn at 35786.0 km: theta2 = 0.69 deg, dv2 = 118.0 m/s
dv = 1701.2 m/s
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#102 by Steven Pietrobon on 18 Feb, 2023 03:31
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T+31 minutes 14 seconds. One minute to separation.
AOS Hadebestok.
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#103 by Steven Pietrobon on 18 Feb, 2023 03:32
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Payload separation confirmed!
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#104 by Steven Pietrobon on 18 Feb, 2023 03:33
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End of webcast.
Expected LOS Gabon.
Congratulations to SpaceX and Inmarsat for the successful launch!
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#105 by FutureSpaceTourist on 18 Feb, 2023 03:34
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https://twitter.com/spacex/status/1626801770843471872Quote
Deployment of @InmarsatGlobal’s I-6 F2 confirmed
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#106 by FutureSpaceTourist on 18 Feb, 2023 03:35
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https://twitter.com/inmarsatglobal/status/1626801954079875073Quote
#I6F2 has successfully separated from the 2nd stage of the Falcon 9.🚀
The long journey into geostationary orbit, 36,000km above Earth, now begins. Safe travels #I6F2 🛰️ - we look forward to hearing from you shortly over Perth! -
#107 by zubenelgenubi on 18 Feb, 2023 05:09
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Thank you, Steven and FST, for today's launch coverage in this launch thread.
Launch time to the second? -
#108 by FutureSpaceTourist on 18 Feb, 2023 07:06
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https://twitter.com/inmarsatglobal/status/1626840177241980929Quote
Hear from our 'Rocket Boys' Simon and Craig from the @scouts when they catch up with @BBCBreakfast at 07:25 GMT straight from watching our #I6F2 satellite launch from Cape Canaveral! 🚀🛰️
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#109 by FutureSpaceTourist on 18 Feb, 2023 07:19
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https://twitter.com/alexphysics13/status/1626807810812964865Quote
This launch marked the 5th time SpaceX had a turnaround time between launches from the same pad at under 6 days meaning the "top 5" fastest turnaround times for SpaceX are all under 6 days and two of those in that top 5 have occurred this year, this month, and back to back.
Also congratulations to SpaceX for their 99th consecutive successful booster landing since the last landing failure! -
#110 by FutureSpaceTourist on 18 Feb, 2023 07:24
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https://twitter.com/spacecoast_stve/status/1626822394701553667Quote
Some bonus shots from tonight’s (last night’s?) Falcon 9 launch.
The 3rd shot is bittersweet. It’s that moment when you know the clouds are taking over, but they filter the light enough to start seeing detail in the plume.
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#111 by FutureSpaceTourist on 18 Feb, 2023 09:05
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https://twitter.com/inmarsatglobal/status/1626885318648467456Quote
#I6F2 🛰️ has successfully launched from Cape Canaveral onboard a Falcon 9 rocket and telemetry acquisition has been received loud and clear from our satellite over the skies of Perth.
🙏 Huge thanks go to @AirbusSpace, @SpaceX and our Inmarsat colleagues. bit.ly/3SoTYsN
https://www.inmarsat.com/en/news/latest-news/corporate/2023/i6-f2-successful-launch.htmlQuoteInmarsat confirms successful launch of world’s most advanced satellite
18 Feb 2023
CORPORATE
PRESS RELEASE
SATELLITES
SpaceX successfully launched Inmarsat’s latest I-6 F2 satellite successfully launched last night from launch pad SLC-40 at Cape Canaveral Space Force Station in Florida.
Inmarsat, a world leader in global, mobile satellite communications, has announced the successful launch of its latest I-6 F2 spacecraft from the Cape Canaveral Space Force Station aboard a flight proven SpaceX Falcon 9 rocket.
The launch saw I-6 F2 lift off from Cape Canaveral, Florida, reaching a top speed of almost 40,000km/h as it left Earth above central Africa. The satellite will now spend several months travelling to its geostationary orbit, 36,000km above the Equator, using its onboard electric propulsion system. It is scheduled to connect its first customers in 2024, following rigorous in-orbit technical testing.
I-6 F2 follows its ‘twin’, I-6 F1, which launched from Japan in late 2021. They are the most sophisticated commercial communications satellites ever and will provide a revolutionary upgrade in Inmarsat’s global coverage services for at least the next 15 years. I-6 F1 is scheduled to connect its first customers later this year.
The new I-6 satellites add further capabilities to Inmarsat’s ORCHESTRA communications network; a unique, global, multi-dimensional, dynamic mesh network that will redefine connectivity at scale with the highest capacity for mobility worldwide. ORCHESTRA enables Inmarsat’s partners and customers to keep pace with their growing data demands and enables them to empower emerging technologies in the future, like autonomous vehicles or flying taxis.
The launch was seen live by Scouts Simon Shemetilo, from London, and Craig Alexander, from Reading, who had a VIP viewing experience to the event. The two were chosen by Astronaut Tim Peake after Scouts from all over the UK entered a competition hosted by Inmarsat and the association. Simon and Craig were judged as submitting the best entries for how satellites can improve life on Earth in the future.
Rajeev Suri, CEO, Inmarsat, said “I want to extend my profound thanks and appreciation to our dedicated employees and partners who have made this launch a reality. Our I-6 programme has been six years in the making. Last night’s launch marked another milestone as we revolutionise global communications at scale.”
“Of course, this is not the end. Along with the I-6s, we will add five more advanced spacecraft to our fleet by 2025 as part of our fully funded technology roadmap. That will allow us to continue to meet our customers’ needs into the 2030s and beyond, while enabling new technologies for a smarter, more connected Earth.” -
#112 by FutureSpaceTourist on 18 Feb, 2023 12:07
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https://twitter.com/mdcainjr/status/1626921257974345731Quote
Successful deployment of @InmarsatGlobal #I6F2 satellite as big as a double decker bus from #London #England at 10:59 PM Feb 17, 2023 from SLC-40 with landing on JRTI for B-1077-3! Congrats #SpaceX #Inmarsat @AirbusSpace #Airbus teams! Through the cloud deck & into #space 🚀🇬🇧🇺🇲
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#113 by FutureSpaceTourist on 18 Feb, 2023 12:52
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https://twitter.com/johnkrausphotos/status/1626942258787323904Quote
Falcon 9 launches Inmarsat I-6 F2
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#114 by FutureSpaceTourist on 18 Feb, 2023 13:51
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https://twitter.com/spacex/status/1626957084561645568Quote
Falcon 9 launches the @InmarsatGlobal I-6 F2 mission to orbit
Photos by John Kraus
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#115 by ddspaceman on 18 Feb, 2023 15:10
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#116 by FutureSpaceTourist on 18 Feb, 2023 15:50
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https://twitter.com/jennyhphoto/status/1626982706218254339Quote
Launch of Inmarsat I-6 F2 last night at 10:59 p.m. ET. @InmarsatGlobal
📷: Me for @SuperclusterHQ
https://twitter.com/jennyhphoto/status/1626977498293587968QuoteB1077 launching Inmarsat I-6 F2 last night.
📷: Me for @SuperclusterHQ @InmarsatGlobal -
#117 by FutureSpaceTourist on 18 Feb, 2023 15:54
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https://twitter.com/spacecoast_stve/status/1626985164260646913Quote
Falcon 9 lifts off with Inmarsat I-6 F2, marking SpaceX’s 12th mission in the first 7 weeks of the year! Don’t blink, or you’ll miss the next launch!
Mission overview: nasaspaceflight.com/2023/02/inmars…
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#118 by Liss on 20 Feb, 2023 09:40
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Well, should not TLEs for Inmarsat 6 F2 be available by now?
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#119 by FutureSpaceTourist on 20 Feb, 2023 19:40
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https://twitter.com/planet4589/status/1627758314112135176Quote
Still no independent confirmation (via SpaceForce TLE data) of successful Inmarsat 6F2 launch after more than 48 hours
Quotewas it a direct inject or is it going to be doing gradual orbit raising over a long period? The latter creates a lot of challenges for their Elset 1 process
https://twitter.com/planet4589/status/1627769422256525316QuoteNo, direct to GTO - not sure if was a bit subsync or supersync though. I have the impression supersync is difficult for them
I’m posting this now to try and guarantee that the TLE data will appear shortly …