Re: Visibility of USSF 8 (GSSAP 5 & 6) events

From: C. Bassa via Seesat-l <seesat-l_at_satobs.org>
Date: Fri, 21 Jan 2022 21:39:24 +0100
Hi all,

The Atlas V with USSF 8 has launched on time at 19:00UTC and has
performed the MES-2 burn to place the rocket and payloads into a
geosynchronous transfer orbit (GTO). The live broadcast provided the
post burn orbital parameters as 231km by 36329km with an inclination
of 25.97 deg.

Based on these values and the apogee over the Galapagos Islands, I
estimate the following elements for the geosynchronous orbit (GSO;
same as what I posted yesterday) and the GTO orbit:

GSO orbit after circularization burn; use for payload sep and fuel dump
1 87001U          22022.06652778  .00000000  00000-0  00000-0 0    08
2 87001   0.0000   0.0000 0014818 351.1100  64.0000  0.99155484    06
GTO orbit before circularization burn; use for finding Centaur and
circularization burn
1 87002U          22022.06445602  .00000000  00000-0  00000-0 0    05
2 87002  25.9650 234.5000 7319757   0.0000 180.0000  2.24213085    05

Happy hunting and I wish you clear skies!

Regards,
   Cees
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Received on Fri Jan 21 2022 - 14:40:52 UTC

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