[Isocops] IBEX ORbit# 346 ATS Approval (5 Nov 16 - 14 Nov 16) - v002 approval

Thu Oct 27 23:49:55 EDT 2016

All, 

Note: Angle at orbit 347 apogee after the perigee sun precession maneuver: 4.993 deg 

I have looked at the orbit 346 ATS, 

IBEX_2016_310_o0346a_v002.scr, 

and I approve. 

The only constraint violations in 

IBEX_2016_310_o0346a_v001.ccvr 

are because we removed the 

ACT_SetSpinPulseProtectEnable Enable 

commands (2); the violations are expected. 

The PL commands in the v002 ATS match those in the v002 STF, 

IBEX_2016_310_o0346a_v002.stf, 

except that the ATS has an SSR_DUMP_NEW command as well as SSR pointer reset commands . This is expected as APL is being used for the dump pass. 

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

IBEX_2016_310_o0346a_v001.oef, 

and as verified with ibex_orbit. 

There is one star tracker outage. It starts at apogee and ends about 10 hours after perigee. Some despinning may be required due to the outage. 

There is one moon in Lo FOV session in arc A. The ATS start time is about 3 hours after that in the OEF and the ATS end time is about 2 1/2 hours after that in the OEF. These differences are not unusual. 

The ground station command sequences are correct and the timing and bit rates match those in the contacts file, 

IBEX_Orbit346_Contacts.txt ( with the correction Sheral sent with the v002 ATS), 

for all contacts (4). 

We are doing battery cell balancing this orbit and the balancing commands are correct and offset by enough time from other commands. 

The inertial maneuver at perigee of orbit 345 left us pointing in safe directions for the orbit 346 arc A ascending and descending sequences: 

ibex_rotate -o -u -0.759329,-0.593125,-0.267625 -w ibex-sun -t 2016/11:05:19:19:16 

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

points axis +1.000000,+0.000000,+0.000000 

towards ECI -0.759329,-0.593125,-0.267625 

which is R.A. +217.994 Decl. -15.523 

missing R.A. +221.144 Decl. -15.935 (ibex-sun) 

error is R.A. +3.150 Decl. +0.412 

for a total 3.060 deg 

ibex_rotate -o -u -0.759329,-0.593125,-0.267625 -w ibex-sun -t 2016/11:09:08:15:17 

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

points axis +1.000000,+0.000000,+0.000000 

towards ECI -0.759329,-0.593125,-0.267625 

which is R.A. +217.994 Decl. -15.523 

missing R.A. +224.563 Decl. -16.954 (ibex-sun) 

error is R.A. +6.569 Decl. +1.431 

for a total 6.467 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 -0.705047,-0.646486,-0.291487 -w ibex-sun -t 2016/11:09:09:58:25 

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

points axis +1.000000,+0.000000,+0.000000 

towards ECI -0.705047,-0.646486,-0.291487 

which is R.A. +222.519 Decl. -16.947 

missing R.A. +224.634 Decl. -16.974 (ibex-sun) 

error is R.A. +2.115 Decl. +0.027 

for a total 2.023 deg 

ibex_rotate -o -u -0.705047,-0.646486,-0.291487 -w ibex-sun -t 2016/11:09:11:33:31 

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

points axis +1.000000,+0.000000,+0.000000 

towards ECI -0.705047,-0.646486,-0.291487 

which is R.A. +222.519 Decl. -16.947 

missing R.A. +224.700 Decl. -16.992 (ibex-sun) 

error is R.A. +2.181 Decl. +0.045 

for a total 2.086 deg 

ibex_rotate -o -u -0.705047,-0.646486,-0.291487 -w ibex-sun -t 2016/11:13:20:58:23 

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

points axis +1.000000,+0.000000,+0.000000 

towards ECI -0.705047,-0.646486,-0.291487 

which is R.A. +222.519 Decl. -16.947 

missing R.A. +229.262 Decl. -18.164 (ibex-sun) 

error is R.A. +6.743 Decl. +1.217 

for a total 6.543 deg 

The sun precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 347 apogee: 

ibex_rotate -o -r +229.377 -d -18.194 -w ibex-sun -t 2016/11:13:23:28:01 

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

points axis +1.000000,+0.000000,+0.000000 

towards ECI -0.618528,-0.721063,-0.312235 

which is R.A. +229.377 Decl. -18.194 

missing R.A. +229.377 Decl. -18.194 (ibex-sun) 

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

for a total 0.000 deg 

ibex_rotate -o -r +229.377 -d -18.194 -w ibex-sun -t 2016-11-19T00:36:57.873Z 

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

points axis +1.000000,+0.000000,+0.000000 

towards ECI -0.618528,-0.721063,-0.312235 

which is R.A. +229.377 Decl. -18.194 

missing R.A. +234.479 Decl. -19.465 (ibex-sun) 

error is R.A. +5.102 Decl. +1.271 

for a total 4.993 deg 

No Lo O-mode. 

There is no overlap with orbit 345 commands by manual inspection or by checking at 

http://ibex.unh.edu/cgi-bin/ats.cgi . 

Command Approval Checklist is attached. 

Ken 

----- Original Message -----

From: "Wesley.Sheral" <sheral.wesley at orbitalatk.com> 
To: "David Heirtzler" <dheirtzl at atlas.sr.unh.edu>, "IBEX-FDG" <IBEX.fdg at applieddefense.com>, "IBEXOPS" <IBEXOPS at gmail.com>, "ISOC" <isocops at lists.sr.unh.edu>, "Ken Fairchild" <fair-play at comcast.net>, "Ken Fairchild" <kwfairchild at gmail.com>, "Lockwood.Robert" <robert.lockwood at orbitalatk.com>, "Michelle Reno" <mreno at swri.edu>, "Nigel Angold" <nigel.angold at nasa.gov>, "Paul Janzen" <paul.janzen at umontana.edu>, "Perry.Tim" <tim.perry at orbitalatk.com>, "Tyler.Ryan" <ryan.tyler at orbitalatk.com>, "Wesley.Sheral" <sheral.wesley at orbitalatk.com> 
Sent: Saturday, October 22, 2016 10:15:21 AM 
Subject: IBEX ORbit# 346 ATS Approval (5 Nov 16 - 14 Nov 16) 

Guys, 

Here are the planning files and ATS for Orbit# 346. 

Please respond to this email thread with your comments and approvals. 

Approvals are required before 25 Oct 16 @1800 UTC 

Note the following: 

1. Battery Balancing at PERIGEE 

Orbit# 346 Perigee Battery Balancing 

# 2016-11-14T08:30:00.255Z,Perigee,orbit:346 

SetLongEclipseFlag TRUE $TIME=2016/11:14:07:00:00 

SetLongEclipseFlag FALSE $TIME=2016/11:14:08:30:00 

2. Moon in Lo FOV Commands 

Orbit# 346 APOGEE: Moon in Lo FOV Commands 

# 2016-11-05T20:52:58.559Z,MoonInLoFovStart,orbit:346 

# 2016-11-06T10:27:04.757Z,MoonInLoFovStop,orbit:346 

3. PERIGEE Sun Maneuver 

2016-11-09T19:50:59.561Z,StarTrackerOutageStart,dueTo:moon,orbit:346 

2016-11-14T18:19:00.000Z,StarTrackerOutageStop,dueTo:moon,orbit:346 

4. APL-18 SSR_Dump/Tracking Contact 

IBEX,APL-18,ADD,11/14/16,319,02:00:00,11/14/16,319,03:00:00,,12re-Descending Perigee 2K-320K IBEX Orbit# 346 SSR_Dump/Tracking Contact 

5. Command Load Constraint Violation Report (CCVR) 

IBEX_2016_310_o0346a_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 2016/11/05 17:43:13 UTC 

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

transition to science mode at 2016/11/09 11:03:31 UTC 

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

OTHER MESSAGES 

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

NO MESSAGES. 

Sheral R. Wesley 

IBEX Mission OPS 

CRS/CYGNUS Mission Planning 

Bldg. 2 Room 1337 

Office (703) 406-5641 

Cell (202) 236-0802 

Notice: This e-mail is intended solely for use of the individual or entity to which it is addressed and may contain information that is proprietary, privileged and exempt from disclosure under applicable law. If the reader is not the intended recipient or agent responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. This communication may also contain data subject to U.S. export laws. If so, data subject to the International Traffic in Arms Regulation cannot be disseminated, distributed, transferred, or copied, whether incorporated or in its original form, to foreign nationals, residing in the U.S. or abroad, absent the express prior approval of the U.S. Department of State. Data subject to the Export Administration Act may not be disseminated, distributed, transferred or copied contrary to U. S. Department of Commerce regulations. If you have received this communication in error, please notify the sender by reply e-mail and destroy the e-mail message and any physical copies made of the communication. 
Thank you. 
********************* 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sr.unh.edu/pipermail/isocops/attachments/20161028/41c3a5dd/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 2392 bytes
Desc: image001.jpg
URL: <http://lists.sr.unh.edu/pipermail/isocops/attachments/20161028/41c3a5dd/image001-0001.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IBEX-Command-Approval-Checklist-Rev16b-o0346_KWF.doc
Type: application/msword
Size: 121856 bytes
Desc: not available
URL: <http://lists.sr.unh.edu/pipermail/isocops/attachments/20161028/41c3a5dd/IBEX-Command-Approval-Checklist-Rev16b-o0346_KWF-0001.doc>