Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
The length of Earth’s umbra therefore varries from about 1.36 million km at perihelion to about 1.4 million km at aphelion. This is just short of the distance of the Earth-Sun Lagrange 2 point (1.5 million km) so satellites posted at this location will generally see a constant annular eclipse of the sun, with the Earth blocking most of it, but not quite all.
