Hi all,

I have looked at the orbit 0626 ATS file, IBEX_2023_299_o0626a_v001.scr and I approve.

 

The constraint violations in IBEX_2023_290_o0626a_v001.ccvr are from the removal of the ACT_SetSpinPulseProtectEnable Enable commands. The violations are acceptable.

 

The PL commands in IBEX_2023_299_o0626a_v001.scr match those in the STF, IBEX_2023_299_o0626a_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_299_o0626a_v001.oef and as verified with ibex_orbit.

 

There are no star tracker outages this orbit.

  

The ground station command sequences are correct and the timing and bit rates match those in the contacts file, IBEX_Orbit626_Contacts.txt for all contacts (3).

 

No Battery Balancing this orbit.

 

The Sun maneuver at perigee of orbit 0625 left us pointing in safe directions for the orbit 0626 arc A ascending and descending sequences:

 

ibex_rotate -o -r +210.220 -d -12.291  -w ibex-sun -t 2023-10-26T10:32:49

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

points axis  +1.000000,+0.000000,+0.000000

towards ECI  -0.844293,-0.491785,-0.212877

which is     R.A. +210.220 Decl. -12.291

missing      R.A. +210.220 Decl. -12.291 (ibex-sun)

error is     R.A.   +0.000 Decl.  +0.000

for a total  0.001 deg

 

ibex_rotate -o -r +210.220 -d -12.291 -w ibex-sun -t 2023/10:27:07:54:05

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

points axis  +1.000000,+0.000000,+0.000000

towards ECI  -0.844293,-0.491785,-0.212877

which is     R.A. +210.220 Decl. -12.291

missing      R.A. +211.109 Decl. -12.646 (ibex-sun)

error is     R.A.   +0.889 Decl.  +0.355

for a total  0.938 deg

 

ibex_rotate -o -r +210.220 -d -12.291 -w ibex-sun -t 2023/10:31:05:33:04

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

points axis  +1.000000,+0.000000,+0.000000

towards ECI  -0.844293,-0.491785,-0.212877

which is     R.A. +210.220 Decl. -12.291

missing      R.A. +214.821 Decl. -13.888 (ibex-sun)

error is     R.A.   +4.601 Decl.  +1.597

for a total  4.757 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 -0.81904,-0.52241,-0.237194 -w ibex-sun -t 2023/10:31:07:16:12

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

points axis  +1.000000,+0.000000,+0.000000

towards ECI  -0.819040,-0.522410,-0.237194

which is     R.A. +212.531 Decl. -13.721

missing      R.A. +214.890 Decl. -13.910 (ibex-sun)

error is     R.A.   +2.359 Decl.  +0.189

for a total  2.298 deg

 

ibex_rotate -o -u -0.81904,-0.52241,-0.237194 -w ibex-sun -t 2023/10:31:08:51:18

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

points axis  +1.000000,+0.000000,+0.000000

towards ECI  -0.819040,-0.522410,-0.237194

which is     R.A. +212.531 Decl. -13.721

missing      R.A. +214.953 Decl. -13.931 (ibex-sun)

error is     R.A.   +2.422 Decl.  +0.210

for a total  2.362 deg

 

ibex_rotate -o -u -0.81904,-0.52241,-0.237194 -w ibex-sun -t 2023/11:04:11:56:12

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

points axis  +1.000000,+0.000000,+0.000000

towards ECI  -0.819040,-0.522410,-0.237194

which is     R.A. +212.531 Decl. -13.721

missing      R.A. +219.019 Decl. -15.245 (ibex-sun)

error is     R.A.   +6.4

 

The Inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 0627 apogee:

 

ibex_rotate -o -u -0.771645,-0.579957,-0.261178 -w ibex-sun -t 2023/11:04:14:13:51

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

points axis  +1.000000,+0.000000,+0.000000

towards ECI  -0.771645,-0.579957,-0.261178

which is     R.A. +216.928 Decl. -15.140

missing      R.A. +219.118 Decl. -15.280 (ibex-sun)

error is     R.A.   +2.190 Decl.  +0.140

for a total  2.118 deg

 

ibex_rotate -o -u -0.771645,-0.579957,-0.261178 -w ibex-sun -t 2023-11-09T11:55:17

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

points axis  +1.000000,+0.000000,+0.000000

towards ECI  -0.771645,-0.579957,-0.261178

which is     R.A. +216.928 Decl. -15.140

missing      R.A. +223.997 Decl. -16.740 (ibex-sun)

error is     R.A.   +7.069 Decl.  +1.600

for a total  6.982 deg

 

There is no overlap with orbit 0625 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: Friday, October 13, 2023 at 14:04
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>, kwfairchild@gmail.com <kwfairchild@gmail.com>, Kenneth Fairchild <Ken.Fairchild@unh.edu>, angoldconsulting@earthlink.net <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 #626 ATS Approval ( Oct 26 – Nov 5, 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 #626. Please respond to this thread with comments and approvals. Approvals are required by COB 16 Oct 2023 

 

Please note the following: 

1.        The ATS I will hold off on up-linking it until later into orbit# 625, just in case we decide to change the maneuvers to sun maneuvers.

 

2.        Perigee Eclipse

# 2023-11-04T20:48:55.421Z,EclipseEntry,moderate:true,long:false,orbit:626

# 2023-11-04T21:48:25.246Z,EclipseExit,moderate:true,long:false,orbit:626 . 

Eclipse Flag -> True 2023/11:04:19:00:00

Eclipse Flag -> False 2023/11:04:22:05:00

 

3.        Command Load Constraint Violation Report (CCVR) 

IBEX_2023_290_o0626a_v001.ccvr

# Input files:         1

#   IBEX_2023_299_o0626a_v001.scr

 

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

HARD CONSTRAINT VIOLATIONS

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

NO VIOLATIONS.

 

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

SOFT CONSTRAINT VIOLATIONS

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

IBX-CLC-015: Battery charge falls below minimum from 2023/11/04 21:54:00 UTC -

             2023/11/05 08:02:00 UTC. Lowest charge level is 2006.577785

             watt-minutes during this interval.

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

             transition to science mode at 2023/10/27 06:18:06 UTC

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

             transition to science mode at 2023/10/31 08:21:18 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