Re: X-37B: Altitude history of OTV 1-1 ad 2-1

From: Robert Clark (
Date: Fri Dec 02 2011 - 18:33:37 UTC

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     On this page X-37b the altitude frequently dips down to around 296 km:
     Why does the perigee listed in your file only go down to about 320 km?
        Bob Clark
    ----- Original Message -----
    From: Ted Molczan <>
    Sent: Wednesday, November 30, 2011 5:08 PM
    Subject: X-37B: Altitude history of OTV 1-1 ad 2-1
    Since X-37B OTV 2-1 has been in the news lately, I have produced this comparison of its altitude history with that of
    its sister spacecraft, relative mission elapsed time.
    The data is derived exclusively from hobbyist observations.
    The USAF has announced that OTV 2-1 will remain in orbit past its nominal 270 day mission duration:
    Ted Molczan
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