Jonathan McDowell(@planet4589) 's Twitter Profileg
Jonathan McDowell

@planet4589

Astronomer commenting on space launches. Orbital Police. Personal account. All plots CC-BY. @planet4589 on Ma, bsky, etc.

ID:19355829

linkhttp://www.planet4589.org calendar_today22-01-2009 19:31:06

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Jonathan McDowell(@planet4589) 's Twitter Profile Photo

I reconstructed the trajectory of the Topol'-ME missile launched from Kapustin Yar at about 1600 UTC today,
so you can see how a rocket flying above Kazakhstan can be seen all over the Middle East. Orange line is rocket trajectory estimate, reasonably accurately to scale.

I reconstructed the trajectory of the Topol'-ME missile launched from Kapustin Yar at about 1600 UTC today, so you can see how a rocket flying above Kazakhstan can be seen all over the Middle East. Orange line is rocket trajectory estimate, reasonably accurately to scale.
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Jonathan McDowell(@planet4589) 's Twitter Profile Photo

LAUNCH of a suborbital missile test from GTsMP-4 (Kapustin Yar) near Volgograd in Russia to the GNIIP-10 range at Sary Shagan, Kazakhstan at about 1600 or 1630 UTC Apr 12. Apogee at least 1000 km, observed widely across the Middle East. Yellow straight line shows approx path

LAUNCH of a suborbital missile test from GTsMP-4 (Kapustin Yar) near Volgograd in Russia to the GNIIP-10 range at Sary Shagan, Kazakhstan at about 1600 or 1630 UTC Apr 12. Apogee at least 1000 km, observed widely across the Middle East. Yellow straight line shows approx path
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Jonathan McDowell(@planet4589) 's Twitter Profile Photo

Just went back down the UTC rabbit hole which led me to this 2023 document itu.int/en/itunews/Doc… which advocates killing the leap second but also proposes (page 40) the far more dangerous idea of changing the length of the SI second. NO NO NO DO NOT DO THIS

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Jonathan McDowell(@planet4589) 's Twitter Profile Photo

Aboard ISS three cubesats were deployed this morning from the J-SSOD-28 deployer extracted by the Japanese robot arm from the Kibo module airlock.
Kyushu Tech's CURTIS was ejected 0905 UTC Apr 11. Chiba U. Tech's Kashiwa and Micro Orbiter's MO-1 were ejected 1035 UTC

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Jonathan McDowell(@planet4589) 's Twitter Profile Photo

LAUNCH at 1425 UTC Apr 11 of a Falcon 9 from Vandenberg, placing the Space Force's WSF-M SV1 weather satellite in a 819 x 828 km x 98.7 deg sun-synch orbit with 06:00 local time orbital plane.
The 1200 kg satellite was built by Ball Aerospace.

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Jonathan McDowell(@planet4589) 's Twitter Profile Photo

First launch from the new Angara pad at Vostochniy should be in about 4 hours from now. Here's a map of Vostochniy showing the Angara pad (top right, PU1A), the PU1S Soyuz pad just NW of it, and the old Svobodniy Missile Base pad 5 used for launches of the Start rocket at left

First launch from the new Angara pad at Vostochniy should be in about 4 hours from now. Here's a map of Vostochniy showing the Angara pad (top right, PU1A), the PU1S Soyuz pad just NW of it, and the old Svobodniy Missile Base pad 5 used for launches of the Start rocket at left
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Jonathan McDowell(@planet4589) 's Twitter Profile Photo

A number of satellites reported today by Space-Track as having reentered on Apr 9, but really based on TLEs must have entered a week or so earlier, by Apr 1. 58174, 40909, 40910, 44401, 44415, 45491, etc etc (got bored of typing them).

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Jonathan McDowell(@planet4589) 's Twitter Profile Photo

LAUNCH at 1653 UTC Apr 9 of a Delta 4 Heavy
on the NROL-70 mission with the USA 353 heavy NRO signals intel satellite on its way to GEO

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Dr Marco Langbroek(@Marco_Langbroek) 's Twitter Profile Photo

I just published a second brief analysis in The Space Review on the recent orbit raising manoeuvers of the satellite -1. In it, I reconstruct the likely time and place of these manoeuvers.
thespacereview.com/article/4772/1

I just published a second brief analysis in @tsr on the recent orbit raising manoeuvers of the #North #Korean satellite #Malligyong-1. In it, I reconstruct the likely time and place of these manoeuvers. thespacereview.com/article/4772/1
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brianweeden(@brianweeden) 's Twitter Profile Photo

This is important not because it's a ground-breaking insight but rather because it's an explicit acknowledgement that the US cannot dominate/control global SSA space.commerce.gov/global-ssa-coo…

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