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In this presentation about Satellite Drag there is a table with the density variations in a orbit height of 400 km.

The solar cycle causes variations of 1600 % and a period of 11 years.
Semianual variations with 125 % and a period of 12 months.
Solar rotation (UV radiation) with 250 % and a period of 27 days.
Major geomagnetic storms with 800 % and 3 days.
Diurnal (day/night) effect with 250 % and a period of 1 day.

The Thermosphere is heated by the Sun, the density increases on the day side of Earth. The ISS will experience a density modulation within an orbit's period of about 90 minutes.

In this presentation about Satellite Drag there is a table with the density variations in a orbit height of 400 km.

The solar cycle causes variations of 1600 % and a period of 11 years.
Semianual variations with 125 % and a period of 12 months.
Solar rotation (UV radiation) with 250 % and a period of 27 days.
Major geomagnetic storms with 800 % and 3 days.
Diurnal (day/night) effect with 250 % and a frequency of 1 day.

The Thermosphere is heated by the Sun, the density increases on the day side of Earth. The ISS will experience a density modulation within an orbit's period of about 90 minutes.

In this presentation about Satellite Drag there is a table with the density variations in a orbit height of 400 km.

The solar cycle causes variations of 1600 % and a period of 11 years.
Semianual variations with 125 % and a period of 12 months.
Solar rotation (UV radiation) with 250 % and a period of 27 days.
Major geomagnetic storms with 800 % and 3 days.
Diurnal (day/night) effect with 250 % and a period of 1 day.

In this presentation about Satellite Drag there is a table with the density variations in a orbit height of 400 km.

The solar cycle causes variations of 1600 % and a period of 11 years.
Semianual variations with 125 % and a period of 12 months.
Solar rotation (UV radiation) with 250 % and a period of 27 days.
Major geomagnetic storms with 800 % and 3 days.
Diurnal (day/night) effect with 250 % and a period of 1 day.

The Thermosphere is heated by the Sun, the density increases on the day side of Earth. The ISS will experience a density modulation within an orbit's period of about 90 minutes.

In this presentation about Satellite Drag there is a table with the density variations in a orbit height of 400 km.

The solar cycle causes variations of 1600 % and a period of 11 years.
Semianual variations with 125 % and a period of 12 months.
Solar rotation (UV radiation) with 250 % and a period of 27 days.
Major geomagnetic storms with 800 % and 3 days.
Diurnal effect with 250 % and a period of 1 day.

In this presentation about Satellite Drag there is a table with the density variations in a orbit height of 400 km.

The solar cycle causes variations of 1600 % and a period of 11 years.
Semianual variations with 125 % and a period of 12 months.
Solar rotation (UV radiation) with 250 % and a period of 27 days.
Major geomagnetic storms with 800 % and 3 days.
Diurnal (day/night) effect with 250 % and a period of 1 day.