Re: North Korea announces satellite launch May 31-June 11

From: Scott Tilley via Seesat-l <seesat-l_at_lists.seesatmail.org>
Date: Mon, 29 May 2023 19:59:46 -0700
Hi All

Perhaps they really don't care and ~78 degree is fine for their mission, 
I'm responding to the hubbub about the unusual inclination and the need 
to explain how some exotic North Korean tech will result in something 
different...  Launching into an SSO takes a hit on orbital mass, and if 
they need to dogleg already to avoid WWIII maybe they are aiming for 
something that requires a little less performance. I highly doubt they 
will do much more than the minimum needed to get the object into a 
useful orbit.

Recall Soviet ZENITs used ~65, ~73 and ~81 degree inclinations largely 
determined by rocket launch site and booster performance and maybe a bit 
of mission needs.  I assume they had satisfactory views of things...

So far all they've successfully launched to orbit is tumbling masses the 
size of dishwasher with no known successful capability once on orbit.  I 
would expect they will focus on just getting there and hoping the 
satellite can do something pretty basic like call home and also let the 
rest of the world know they are alive...  Some radio signals the world 
can verify, maybe a picture or two etc.

Regards,

Scott Tilley


> The geographic locations of these areas point to a launch into a ~78 
> degree inclined orbit with a dog-leg just after launch. This is a 
> different launch trajectory and indicated inclination than that of KMS 
> 3-2 and KMS-4.
>
>

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Received on Mon May 29 2023 - 19:59:56 UTC

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