Re: How Many Bright Satellites?

From: C. Bassa via Seesat-l <seesat-l_at_satobs.org>
Date: Sun, 23 Feb 2020 15:17:56 +0100
On Sun, Feb 23, 2020 at 3:04 PM Anthony Mallama via Seesat-l
<seesat-l_at_satobs.org> wrote:
> However, additional birds are becoming difficult to find. Any estimates of
> how many there are?

Going through the observations that are posted on the SeeSat mailing
list, there are just over 2700 unique objects with at least 10
observations reported. This is using only IOD observations (of which
there are 328000) and excluding objects with NORAD IDs larger than
46000. Hence some of the 96XXX and 99XXX objects that we track are not
included. Also, some of the objects in this list will no longer be in
orbit, so treat this as a rough estimate.

Regards,
    Cees
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Received on Sun Feb 23 2020 - 08:18:42 UTC

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