[Isocops] IBEX Goat Herder for 3 April 2023

[Ken Fairchild]

Nigel,

We currently have 2 theories: 1) that the partial maneuver put us in an
outage.  2) Tim noticed the CCD temperature was several degrees higher than
normal during the recovery contacts.  This morning it was at its
usual temperature.  I think Ryan has.a tool that allows him to visualize if
we are in an outage or how close we might be.  I don't know if he can
ingest the info from the partial maneuver too...

Unfortunately, I don't think we get the CCD temperature on the ground so we
can't look at history.

Ken

On Mon, Apr 3, 2023 at 9:11 AM <ADS-IBEX at l3harris.com> wrote:

> Hi all,
>
>
>
> I can redo the predicts with the updated maneuvers. Nigel, to clarify, are
> you wanting an updating star tracker outage report?
>
>
>
> I will just need to know whether the perigee inertial maneuver was
> executed or not – which sounds like the same question that was stated below
> regarding whether we had any pulses for it.
>
>
>
> 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 <Kayton.Lane at L3Harris.com>*
>
> Palm Bay, FL 32905 / USA
>
>
>
> *From:* Nigel Angold <nangold at princeton.edu>
> *Sent:* Monday, April 3, 2023 7:59 AM
> *To:* Perry, Timothy E [US] (SP) <Timothy.Perry at ngc.com>
> *Cc:* bhautama at gmail.com; carol.weaver at unh.edu; Chubin, Eric [US] (SP) <
> Eric.Chubin at ngc.com>; SM[SSTC] - ADS-IBEX <ADS-IBEX at L3Harris.com>;
> IBEXOPS at gmail.com; isocops at lists.sr.unh.edu; fair-play at comcast.net;
> kwfairchild at gmail.com; ken.fairchild at unh.edu; Leonard, Benjamin Y [US]
> (SP) <Benjamin.Leonard at ngc.com>; angoldconsulting at earthlink.net; Tyler,
> Ryan S [US] (SP) <Ryan.Tyler at ngc.com>; Wesley, Sheral R [US] (SP) <
> Sheral.Wesley at ngc.com>; Wynn, Reese [US] (SP) <Reese.Wynn at ngc.com>
> *Subject:* [EXTERNAL] Re: IBEX Goat Herder for 3 April 2023
>
>
>
> *WARNING: *Email originated from an * EXTERNAL* source. Do NOT click
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>
> Thanks, Tim and Ken for working this.
>
>
>
> Is there any chance that we were in a partial outage because of the failed
> maneuver followed by the Sun pointing maneuver instead of the inertial? I’m
> not sure if that would explain the percent valid bouncing around  like
> that. But it’s odd that the value was back up to a solid 78-80% last
> contact.
>
>
>
> Did we have any pulses for the failed maneuver?
>
>
>
> Would FD running the predicts with the actual attitudes be
> useful/possible?
>
>
>
> Thanks,
>
> Nigel
>
> Sent from my iPhone
>
>
>
> On Apr 3, 2023, at 4:13 AM, Perry, Timothy E [US] (SP) <
> Timothy.Perry at ngc.com> wrote:
>
> 
>
> All,
>
>    The contact was successful. We were able to delete all the timed
> commands and uplink a new Orbit 603 ATS version 2. On previous contacts we
> were seeing the star tracker percent valid value jump around from 0 – 80.
> That was what caused the spacecraft to go into contingence mode during the
> perigee inertial maneuver. This contact the star tracker percent valid was
> stable between 78 & 80.
>
>
>
> Tasks Accomplished:
>
> Ops Procedure OP924-31423 Delete timed commands
>
> CAR # 1307 Orbit 603 Version 2 ATS uplink
>
> Reset FDC Totals
>
>
>
>
>
>
>
> Timothy E.Perry
>
> CRS IBEX OCO-2
>
> Mission Operations
>
> timothy.perry at ngc.com
>
> Office (703) 406-5976
>
> Cell (301) 606-1430
>
>
>
>
>
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