Radio occultation observations from India's Mars Orbiter Mission during October 2021 yield low solar wind speeds, 100 to 150 km/s, in the middle corona at 5 to 8 solar radii, using a proposed simplified spectral-broadening equation.
Satellite Drag Analysis During the May 2024 Gannon Geomagnetic Storm
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abstract
Between May 10-12, 2024, Earth saw its largest geomagnetic storm in over 20 years. Since the last major storm in 2003, the population of satellites in low Earth orbit has surged following the commercialization of space services and the ongoing establishment of proliferated LEO constellations. In this note, we investigate the various impacts of the geomagnetic storm on satellite operations. A forecast performance assessment of the geomagnetic index ap shows that the magnitude and duration of the storm were poorly predicted, even one day in advance. Total mass density enhancements in the thermosphere are identified by tracking satellite drag decay characteristics. A history of two-line element (TLE) data from the entire NORAD catalog in LEO is used to observe large-scale trends. Better understanding how geomagnetic storms impact satellite operations is critical for maintaining satellite safety and ensuring long-term robust sustainability in LEO.
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Insights into Solar Wind Flow Speeds from the Coronal Radio occultation Experiment: Findings from the Indian Mars Orbiter Mission
Radio occultation observations from India's Mars Orbiter Mission during October 2021 yield low solar wind speeds, 100 to 150 km/s, in the middle corona at 5 to 8 solar radii, using a proposed simplified spectral-broadening equation.