Sentinel-5P sealed from view

October 5, 2017, European Space Agency
The Sentinel-5P satellite was sealed from view in the Rockot fairing on 3 October 2017. Credit: ESA–Stephane Corvaja, 2017

As preparations for the launch of Sentinel-5P continue on track, the team at Russia's Plesetsk site has bid farewell to the satellite as it was sealed from view in the Rockot fairing. Liftoff is set for 13 October at 09:27 GMT (11:27 CEST).

Since its arrival at the at the beginning of September, Sentinel-5P has been through a series of stringent tests to confirm there was no damage during the flight from the UK.

These tests have made sure that everything is in good working order so that this new will deliver measurement of .

The delicate and risky task of fuelling the satellite took place nearly two weeks ago, after which it was joined to the rocket adapter.

It was then hoisted onto the upper stage and the last protective covers were removed before encapsulation in the rocket fairing, which protects the satellite during the first part of the launch. The next step will be to transfer the 'Ascent Unit' to the Rockot on the , scheduled for Saturday.

Sentinel-5P – the 'P' standing for 'Precursor' – is the first Copernicus mission dedicated to monitoring our atmosphere. The satellite carries the state-of-the-art Tropomi instrument to map a multitude of trace gases such as nitrogen dioxide, ozone, formaldehyde, , methane, carbon monoxide and aerosols – all of which affect the air we breathe and therefore our health, and our climate.

The Sentinel-5P satellite during the encapsulation within the launcher fairing on 3 October 2017. Credit: ESA–Stephane Corvaja, 2017

With a swath width of 2600 km, it will map the entire planet every day. Information from this new mission will be used through the Copernicus Atmosphere Monitoring Service for air quality forecasts and for decision-making.

The mission will also contribute to services such as volcanic ash monitoring for aviation safety and for services that warn of high levels of UV radiation, which can cause skin damage.

In addition, scientists will also use the measurements to improve our knowledge of important processes in the atmosphere related to the climate and to the formation of holes in the ozone layer.

Sentinel-5P is lofted into orbit on a Rockot launcher from the Plesetsk Cosmodrome in northern Russia. Rockot is a converted SS-19 intercontinental ballistic missile, which was designed as a weapon of war during the early 1970s. Plesetsk is about 800 km northeast of Moscow and 200 km south of the city of Archangel.  Credit: European Space Agency

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