[Isocops] [Ibexops] Orbit 598 Contact Statuses

[kayton.lane at L3Harris.com]

Hi Nigel,

In the instance of the fire code reset, how long would we be going without tracking data from the downlink?

As far as planning for additional tracking data, any and all extra passes that you could schedule before that occurs would be helpful, as close to the time of the reset as possible.

Thanks,
Kayton


Kayton Lane
Astrodynamics Engineer
Space & airborne systems / L3HARRIS TECHNOLOGIES
w +1 321 729 1809
m +1 218 431 0586
L3Harris.com / Kayton.Lane at L3Harris.com<mailto:Kayton.Lane at L3Harris.com>
Palm Bay, FL 32905 / USA

From: NIgel Angold <nangold at princeton.edu>
Sent: Thursday, February 23, 2023 8:45 PM
To: Lane, Kayton (US) - SS <kayton.lane at L3Harris.com>
Cc: angoldconsulting at earthlink.net; ibexops at lists.sr.unh.edu; kwfairchild at gmail.com; don.gittle at sscspace.com; dhobel at uspacenet.com; Sheral.Wesley at ngc.com; Timothy.Perry at ngc.com; Reese.Wynn at ngc.com; Looney, Caeley (US) - SS <Caeley.Looney at L3Harris.com>; Byrd, Reneisha (US) - SS <Reneisha.Byrd at L3Harris.com>; Dykes, Andy (US) - SS <Andy.Dykes at L3Harris.com>; Dave McComas <dmccomas at princeton.edu>; Scott Weidner <sweidner at princeton.edu>; Carol Weaver <carol.weaver at unh.edu>
Subject: [EXTERNAL] Re: Orbit 598 Contact Statuses

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Thanks Kayton.

So the tracking data post-anomaly looks good too. That's excellent news. I'm pretty sure that means the downlink is coherent. Let me know if you or others at L3Harris disagree.

Also, Tim took a successful test pass with AK today to validate the fixes that SSC made. So he scheduled two contacts for tomorrow (Friday) morning and hopefully we can get good tracking data from them too. We've shifted the HI01 apogee contact on Monday 27 Feb later because it conflicted with the time slot earmarked for the follow-up ARB (10:00 am eastern). Again, we hope it will provide more good tracking data.

Before the next perigee and potential Master Reset due to the 18 day command loss timer on 4 March, if we decide to perform a Firecode Reset that could result in no downlink for a while, would ~30 minutes of tracking data before the reset be helpful in providing an orbit determination that's as up to date as possible before losing visibility?

Nigel

kayton.lane at L3Harris.com<mailto:kayton.lane at L3Harris.com>
February 23, 2023 at 16:45

Hello everyone,

Below are the statuses for the o598 primary contacts.
DOY 049 15:00 UTC contact w/ USHI-02 (apogee): Pass for Doppler

DOY 049 18:00 UTC contact w/ USHI-02 (Recovery Contact): Pass for Doppler

DOY 050 20:20 UTC contact w/ USHI-01 (Recovery Contact): Pass for Doppler

DOY 052 19:00 UTC contact w/ USHI-02 (Recovery Contact): Pass for Doppler

DOY 052 21:25 UTC contact w/ AUWA-01 (Recovery Contact): Pass for Doppler
DOY 054 02:00 UTC contact w/ USHI-01 (P/D): Pass for Doppler
DOY 054 11:00 UTC contact w/  USHI-02 (P/A): Pass for Doppler

Thanks,
Kayton Lane
IBEX FDG


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