# Long March 4B | Haiyang 2E: launch

> Long March 4B by China Aerospace Science and Technology Corporation from Jiuquan Satellite Launch Center, People's Republic of China. Flown: Success.

- Canonical page: https://spacenexus.us/launch/cmquvptrcxjfu3x6absueu7x2
- This Markdown version: https://spacenexus.us/launch/cmquvptrcxjfu3x6absueu7x2.md
- Data as of: 2026-10-13 01:45 UTC (last Launch Library 2 sync)
- How the numbers are made: https://spacenexus.us/launch-slips/method

## Facts

- Launch: Long March 4B | Haiyang 2E
- Mission: Haiyang 2E
- Provider: China Aerospace Science and Technology Corporation
- Rocket: Long March 4B
- Pad: Jiuquan Satellite Launch Center, People's Republic of China
- Country of the launch site: CHN
- Date (UTC): Wed, Jul 1, 23:46 UTC (2026-07-01T23:46:00.000Z)
- Launch window: 2026-07-01 23:38 UTC to 2026-07-02 00:07 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: Haiyang 2E (Chinese: "Ocean"), abbreviated HY-2E, is a marine remote sensing satellite of China. The HY-2 series' primary objective is to measure ocean dynamic and regional environmental trends in the microwave spectral range, plus measurements of parameters such as marine wind vector, marine surface heat and Sea Surface Temperature (SST). These ocean dynamics real-time data aid aero-marine forecasts for the prevention of, and relief in the event of, natural disasters. Instruments carried include: \* Microwave Radiometer Imager (MWRI) \* Radar Altimeter (RA) \* Ku-band Rotational Fan-beam Scatterometer (SCAT)

## Date history

No date change recorded for this launch since our ledger began.

## 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-4b-haiyang-2e)

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