Talk:EchoStar XXI
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I was looking at the List of heaviest spacecraft and noticed that this article was missing. I copied over the structure from Terrestar-1 and replaced the information with the best I could find. If I missed anything or misread some of the orbital parameters, my apologies. It was my first time reading TLEs, and the Two-line element set page was very helpful. StandaloneSA (talk)