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ESA Vigil

(plan for space-weather warning satellite at L5)

ESA Vigil is a planned ESA satellite to view the Sun from Earth-Sun Lagrangian point L5, aiming for a launch in the mid-2020s, to assist in monitoring space weather through early detection of solar-activity events such as coronal mass ejections (CMEs). It would detect CMEs earlier by viewing the Sun's Earth-ward surface in profile, potentially increasing some warning times from a few minutes to a day or more.

The L5-based satellite plan is a portion of a previous larger plan called Lagrange, that additionally proposed a new satellite at L1 to view the Sun and monitor solar wind, reporting data at a more constant rate than do the current solar-monitoring satellites at L1: this would make more suitable to space-weather monitoring and prediction. The new, reduced plan intends to collaborate with a similar planned USA NOAA L1 space-weather satellite, SWFO-L1.


(spacecraft,solar,ESA,L5,plan)
Further reading:
https://en.wikipedia.org/wiki/ESA_Vigil
https://cpaess.ucar.edu/sites/default/files/documents/sww-2018-presentations/Luntama_Juha-Pekka_06.pdf
https://www.esa.int/Space_Safety/Vigil
https://ui.adsabs.harvard.edu/abs/2019AGUFMSH24B..01P/abstract
https://www.bbc.com/news/science-environment-42922898
https://www.frontiersin.org/articles/10.3389/fspas.2021.627576/full

Referenced by pages:
Lagrangian point
solar physics

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