Hi all,

I have looked at the orbit 0610 ATS file, IBEX_2023_154_o0610a_v001.scr and I approve.

 

The constraint violations in IBEX_2023_154_o0610a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.

 

The PL commands in IBEX_2023_154_o0610a_v001.scr match those in the STF, IBEX_2023_154_o0610a_v002.stf.

 

Ascending and descending command sequences are consistent with each other, 15 Re ascending, the apogee maneuver time and 15 Re descending as determined from the OEF, IBEX_2023_154_o0610a_v001.oef and as verified with ibex_orbit.

 

There are 2 star tracker outages this orbit.  The first overlaps with Orbit 0609 and ends 22 mins after 16 Re ascending. The second lasts for 7.2 hours and starts ~6 hours after the perigee maneuver.

 

The ground station command sequences are correct and the timing and bit rates match those in the contacts file, IBEX_Orbit610_Contacts.txt for all contacts (4).

 

No Battery Balancing this orbit.

 

The Sun maneuver at perigee of orbit 0609 left us pointing in safe directions for the orbit 0610 arc A ascending and descending sequences:

 

ibex_rotate -o -r +71.036 -d +22.303 -w ibex-sun -t 2023/06:04:10:26:44

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

points axis  +1.000000,+0.000000,+0.000000

towards ECI  +0.300663,+0.874973,+0.379505

which is     R.A.  +71.036 Decl. +22.303

missing      R.A.  +71.811 Decl. +22.363 (ibex-sun)

error is     R.A.   +0.775 Decl.  +0.060

for a total  0.720 deg

 

ibex_rotate -o -r +71.036 -d +22.303 -w ibex-sun -t 2023/06:08:02:06:52

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

points axis  +1.000000,+0.000000,+0.000000

towards ECI  +0.300663,+0.874973,+0.379505

which is     R.A.  +71.036 Decl. +22.303

missing      R.A.  +75.569 Decl. +22.782 (ibex-sun)

error is     R.A.   +4.533 Decl.  +0.479

for a total  4.214 deg

 

The Inertial precession maneuver at apogee leaves us pointing in safe directions at the time of the maneuver and for arc B ascending and descending sequences:

 

ibex_rotate -o -u 0.261186,0.889554,0.374801 -w ibex-sun -t 2023/06:08:03:50:00

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

points axis  +1.000000,+0.000000,+0.000000

towards ECI  +0.261186,+0.889554,+0.374801

which is     R.A.  +73.637 Decl. +22.012

missing      R.A.  +75.644 Decl. +22.790 (ibex-sun)

error is     R.A.   +2.007 Decl.  +0.778

for a total  2.012 deg

 

ibex_rotate -o -u 0.261186,0.889554,0.374801 -w ibex-sun -t 2023/06:08:05:25:06

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

points axis  +1.000000,+0.000000,+0.000000

towards ECI  +0.261186,+0.889554,+0.374801

which is     R.A.  +73.637 Decl. +22.012

missing      R.A.  +75.714 Decl. +22.797 (ibex-sun)

error is     R.A.   +2.077 Decl.  +0.785

for a total  2.074 deg

 

ibex_rotate -o -u 0.261186,0.889554,0.374801 -w ibex-sun -t 2023/06:12:16:45:50

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

points axis  +1.000000,+0.000000,+0.000000

towards ECI  +0.261186,+0.889554,+0.374801

which is     R.A.  +73.637 Decl. +22.012

missing      R.A.  +80.409 Decl. +23.159 (ibex-sun)

error is     R.A.   +6.772 Decl.  +1.147

for a total  6.357 deg

 

The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0611 apogee:

 

ibex_rotate -o -u 0.185086,0.905198,0.382571 -w ibex-sun -t 2023/06:12:19:28:15

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

points axis  +1.000000,+0.000000,+0.000000

towards ECI  +0.185086,+0.905198,+0.382571

which is     R.A.  +78.444 Decl. +22.493

missing      R.A.  +80.522 Decl. +23.162 (ibex-sun)

error is     R.A.   +2.078 Decl.  +0.669

for a total  2.029 deg

 

ibex_rotate -o -u 0.185086,0.905198,0.382571 -w ibex-sun -t 2023-06-17T20:07:27

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

points axis  +1.000000,+0.000000,+0.000000

towards ECI  +0.185086,+0.905198,+0.382571

which is     R.A.  +78.444 Decl. +22.493

missing      R.A.  +85.674 Decl. +23.393 (ibex-sun)

error is     R.A.   +7.230 Decl.  +0.900

for a total  6.718 deg

 

There is no overlap with orbit 0609 commands.

 

Command Approval Checklist is attached.

  

Carol

 

-- 

Carol Weaver

University of New Hampshire

503-902-8492

 

From: Perry, Timothy E [US] (SP) <Timothy.Perry@ngc.com>
Date: Monday, May 22, 2023 at 12:26
To: Carol Weaver <carol.weaver@unh.edu>, Chubin, Eric [US] (SP) <Eric.Chubin@ngc.com>, David Heirtzler <David.Heirtzler@unh.edu>, ADS-IBEX@l3harris.com <ADS-IBEX@l3harris.com>, IBEXOPS@gmail.com <IBEXOPS@gmail.com>, isocops@lists.sr.unh.edu <isocops@lists.sr.unh.edu>, fair-play@comcast.net <fair-play@comcast.net>, kwfairchild@gmail.com <kwfairchild@gmail.com>, Kenneth Fairchild <Ken.Fairchild@unh.edu>, angoldconsulting <angoldconsulting@earthlink.net>, Paul.Janzen@mso.umt.edu <Paul.Janzen@mso.umt.edu>, Perry, Timothy E [US] (SP) <Timothy.Perry@ngc.com>, Tyler, Ryan S [US] (SP) <Ryan.Tyler@ngc.com>, Wesley, Sheral R [US] (SP) <Sheral.Wesley@ngc.com>, Wynn, Reese [US] (SP) <Reese.Wynn@ngc.com>
Subject: IBEX Orbit #610 ATS Approval (04 – 13 June 2023)

CAUTION: This email originated from outside of the University System. Do not click links or open attachments unless you recognize the sender and know the content is safe.

 

All, 

   Attached are the planning files for Orbit #610. Please respond to this thread with comments and approvals. Approvals are required by 1600, 25 May 2023 

 

Please note the following: 

1.        No Battery Balancing this Orbit. 

 

2.        Command Load Constraint Violation Report (CCVR) 

# Input files:         1

#   IBEX_2023_154_o0610a_v001.scr

 

==========================

HARD CONSTRAINT VIOLATIONS

==========================

NO VIOLATIONS.

 

==========================

SOFT CONSTRAINT VIOLATIONS

==========================

IBX-CLC-016: No command to enable spin pulse protection was found after

             transition to science mode at 2023/06/04 08:32:57 UTC

IBX-CLC-016: No command to enable spin pulse protection was found after

             transition to science mode at 2023/06/08 04:55:06 UTC

 

==============

OTHER MESSAGES

==============

NO MESSAGES

 

Timothy E.Perry

CRS IBEX OCO-2

Mission Operations

timothy.perry@ngc.com

Office (703) 406-5976

Cell (301) 606-1430