WebIn mid-July 2009, about two months after launch, Herschel entered a Lissajous orbit of about 497,000 miles (800,000 kilometers) radius around L2 and began active operations July 21. (Herschel’s distance from Earth varied, depending on its orbital position, between 746,000 to 1.1 million miles (1.2 and 1.8 million kilometers). WebRocketry Planet is a world class portal dedicated to hobby rocketry enthusiasts around the globe.
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