# Long March 12 | SatNet LEO Group 25: launch

> Long March 12 by China Aerospace Science and Technology Corporation from Wenchang Space Launch Site, People's Republic of China. Flown: Success.

- Canonical page: https://spacenexus.us/launch/cmtsvyc3k1s2udt040kxz1pqi
- This Markdown version: https://spacenexus.us/launch/cmtsvyc3k1s2udt040kxz1pqi.md
- Data as of: 2026-10-24 12:01 UTC (last Launch Library 2 sync)
- How the numbers are made: https://spacenexus.us/launch-slips/method

## Facts

- Launch: Long March 12 | SatNet LEO Group 25
- Mission: SatNet LEO Group 25
- Provider: China Aerospace Science and Technology Corporation
- Rocket: Long March 12
- Pad: Wenchang Space Launch Site, People's Republic of China
- Country of the launch site: CHN
- Date (UTC): Thu, Sep 17, 00:32 UTC (2026-09-17T00:32:00.000Z)
- Launch window: 2026-09-17 00:25 UTC to 2026-09-17 00:54 UTC
- Status: completed (Launch Library 2: Success)
- Outcome: Success
- Real slips recorded: 0; other date moves (placeholder rolls, firmings), not slips: 0

## Mission description

Quoted from Launch Library 2: A batch of 9 Low Earth Orbit communication satellites for the Chinese state owned SatNet constellation operated by the China Satellite Network Group. The constellation will eventually consists of 13000 satellites.

## Date history

"Seen live" means our sync saw the change when it happened; "caught up late" means Launch Library 2 made it earlier, on a day we do not know, and it is never counted as a slip.

| Observed | From | To | Kind | Shift (days) | Observation |
| --- | --- | --- | --- | --- | --- |
| 2026-09-09 | Sep 17, 2026 | Sep 17, 2026 | Same-day change | 0 | seen live |
| 2026-09-17 | Sep 17, 2026 | Sep 17, 2026 | Same-day change | 0 | seen live |

## Sources

- [Launch Library 2 by The Space Devs](https://thespacedevs.com): launch names, providers, rockets, pads, dates and status
- [SpaceNexus Launch Ledger (our own record of every date change)](https://spacenexus.us/launch-slips/method)
- [Mission information (link from Launch Library 2)](https://www.spacelaunchnow.me/launch/long-march-12-satnet-leo-group-25)

## Licence and credits

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- Launch facts (names, providers, rockets, pads, dates, status): Launch Library 2 by The Space Devs (thespacedevs.com), credited and not relicensed by SpaceNexus.
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