this post was submitted on 01 Jul 2025
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| Scheduled for (UTC) | 2025-07-01, 21:04 | |


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| | Scheduled for (local) | 2025-06-07, 17:04 (EDT) | | Launch site | LC-39A, Cape Canaveral SFS, Florida, USA | | Booster | B1085-9 | | Landing | Just Read the Instructions | | Payload | MTG-S1/Sentinel-4A | | Payload mass | 3,800.0 kg | | Customer | EUMETSAT | | Target orbit | Geostationary Transfer Orbit |

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| | Space Affairs | https://youtube.com/watch?v=MUims7kDjGg | | Spaceflight Now | https://youtube.com/watch?v=P4b2ozFLE40 | | NASASpaceflight | https://youtube.com/watch?v=phfAjAI1yeA | | The Launch Pad | https://youtube.com/watch?v=gGwEaTScbgI | | SpaceX | | | The Space Devs | |

Stats

Sourced from NextSpaceflight and r/SpaceX:

☑️ 16th launch from LC-39A this year

☑️ 6 days, 14:32:08 turnaround for this pad

☑️ 24 days, 16:10:00 hours since last launch of booster B1085

☑️ 126th landing on JRTI

☑️ 475th Falcon family booster landing, 488th Falcon recovery attempt

☑️ 82nd Falcon 9 mission this year, 500th Falcon 9 mission overall

☑️ 82nd SpaceX mission of 2025, 516th overall (excluding Starship flights)

☑️ 85th SpaceX launch this year, 534th overall (including Starship flights)

Mission info

MTG (Meteosat Third Generation) is the follow-up system to the Meteosat MSG series of geostationary satellites.

The satellite system will consist of a twin configuration of 3-axis-stabilised satellites: the Imaging mission satellite (MTG-I) and the Sounding mission satellite (MTG-S).

The payload proposed for MTG-S would have an Infrared Sounder (IRS) and Ultra-violet Visible Near-infrared (UVN) Sounder, the later of which is included as the Sentinel-4 mission

The Sentinel-4 mission focuses on monitoring trace gas concentrations and aerosols in the atmosphere to support operational services covering air-quality near-real-time applications, air-quality protocol monitoring, and climate protocol monitoring. The specific objective of Sentinel-4 is to support this with a high revisit time over Europe.

The Sentinel-4/UVN instrument is a high-resolution spectrometer system operating with 3 designated bands in the solar reflectance spectrum, covering the ultraviolet (305-400 nm), visible (400-500 nm), and near-infrared (750-775 nm) bands. The central Sentinel-4/UVN instrument parameters are a spatial sampling of 8 km over Europe and a fast repeat cycle over Europe and North Africa (Sahara) of 60 minutes.

The respective spectral resolution is 0.5 nm in the ultraviolet and visible bands, with the goal of 0.12 nm in near-infrared.

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Nominal GTO insertion burn, MTG-S1 payload deploy confirmed.

M-vac shutdown and nominal orbit insertion confirmed.

Stage 1 landing confirmed!

MECO, stage separation, M-vac ignition, and fairing separation confirmed.

Winds are mild, sky is blue, storm seems a long way off, launch is looking increasingly likely.

T-20 minute vent.

[–] threelonmusketeers@sh.itjust.works 1 points 2 days ago* (last edited 2 days ago)

NSF are live. Propellant loading has started.

Weather is a watch item for this launch, currently 20% go.