SV: High orbit satellite

From: Bjoern Gimle (
Date: Wed Mar 01 2000 - 21:58:44 PST

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    >A very interesting discovery. Might I suggest, however, that it be assigned
    >a 9xxxx number until the identification is more certain?  Perhaps those
    >BTW, do we have a convention for 9xxxx numbers, such as 9YYNNN?
    Not 9YYNNN, but 9YDDD is used by several observers (Y=last digit of year,
    D=day no of discovery).
    I have suggested and used 4YDDD for USSPACECOM no, and 4Y DDDXXX for Intl.ID
    in IOD format, since
    years like 99, 90... do not stand out very well when browsing a list of
    Though not common when using USSPACECOM only, they look like (part of)
    international IDs, and in the UK formats of Russell, David, Peter and
    Michael, 9X numbers are difficult to find.
    I know 9NNNN is a USSPACECOM convention, but there seems to be no problem
    using 4YDDD in any software, nor confusion with official elsets for a VERY
    long time.
    -- (office)                         --
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    -- COSPAR 5919, MALMA,    59.2615 N, 18.6206 E, 33 m         --
    -- COSPAR 5918, HAMMARBY, 59.2985 N, 18.1045 E, 44 m         --
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