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Daily brief · Wednesday, 21 October 2026 (UTC)

21 Oct: 1 military satellite changed orbit, 18 closing on others, 1 launch, 7 clusters over conflict zones ahead, 3 geostationary moves.

Countries busier than usual

0

A country's last 7 days against its own normal (the 90 days before, once there are 28): at least twice its usual week and well outside chance.

No country ran well above its normal this week.

Military satellites that changed orbit

1

Confirmed by the next public orbit update. 19 other satellites (not military) also changed orbit.

Military and unclassified satellites closing on others

18

In nearly the same orbit as another object, and getting closer.

and 6 more

Geostationary relocations

3

Working satellites 36,000 km up that left their slot or stopped at a new one, from their daily positions. One stopping beside another country's satellite is named.

Clusters over conflict zones in the next 24 hours

7

4 or more of one country's working military satellites, from different launches, over places where fighting was recorded this year, at once. Passes are fixed by orbits days ahead, so a cluster is usually a coincidence.

and 1 more

Military satellites whose public tracking stopped

0

Working satellites whose public orbit updates stopped, or that left the public catalogue.

None on this day.

Possible breakups

0

Three or more new pieces catalogued from a launch over a month old, in a week (Space-Track satellite catalogue).

None on this day.

Newly catalogued objects

1

Objects that appeared in the public catalogue for the first time. One from an earlier launch can mean a satellite released something.

Launches

1

On the day, then the next 24 hours.

Re-entries

0

None on the day or predicted in the next 24 hours.

Built 22 Oct, 00:30 UTC from the event log: what overhead24 detected that day, in its own words. Sources: Space-Track.org (USSPACECOM) (orbit data and re-entries); GCAT (J. McDowell, planet4589.org/space/gcat) (owners and military class, CC BY 4.0); Launch Library 2 (The Space Devs) (launches); UCDP (where fighting was recorded, CC BY 4.0). Worked out from public orbit data, accurate to a few kilometres and less the older the data. Not for collision avoidance, navigation or targeting. Satellites pass over every country: being overhead says nothing about what a satellite is doing.

Earlier briefs

2026-10-252026-10-242026-10-232026-10-222026-10-202026-10-19