[Isocops] IBEX Orbit# 325 ATS Approval v002 (28 Apr 16 - 8 May 16) - v002 approval

Mon Apr 18 10:29:33 EDT 2016

All, 

Note: Off-pointing at arc B descending is 3.875 deg 
Off-pointing at orbit 326 apogee is 5.013 deg 

I have looked at the orbit 325 recovery ATS, 

IBEX_2016_119_o0325a_Recovery_v002.scr, 

and I approve. 

The only constraint violations in 

IBEX_2016_119_o0325a_Recovery_v002.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 v003 STF, 

IBEX_2016_119_o0325a_v003.stf. 

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_119_o0325a_Recovery_v001.oef, 

and as verified with ibex_orbit. 

There is one star tracker outage. The outage starts about 4 hours before 15 Re descending and runs for about 7 hours. If the star tracker was working, some despinning might be required due to the outage. 

There is one moon in Lo FOV session. The ATS and OEF start times are the same and the ATS end time is about 20 minutes after that in the OEF. 

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

IBEX_Orbit325_RecoveryContacts.txt, 

for the two contacts in the ATS. The SSR dump contact will be a blind acq. 

The sun precession maneuver at perigee of orbit 324 left us pointing in safe directions for the orbit 325 arc A ascending and descending sequences: 

ibex_rotate -o -r +36.066 -d +14.334 -w ibex-sun -t 2016/04:29:09:30:13 

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

points axis +1.000000,+0.000000,+0.000000 

towards ECI +0.783175,+0.570389,+0.247574 

which is R.A. +36.066 Decl. +14.334 

missing R.A. +36.862 Decl. +14.567 (ibex-sun) 

error is R.A. +0.796 Decl. +0.233 

for a total 0.805 deg 

ibex_rotate -o -r +36.066 -d +14.334 -w ibex-sun -t 2016/05:03:10:35:29 

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

points axis +1.000000,+0.000000,+0.000000 

towards ECI +0.783175,+0.570389,+0.247574 

which is R.A. +36.066 Decl. +14.334 

missing R.A. +40.860 Decl. +15.801 (ibex-sun) 

error is R.A. +4.794 Decl. +1.467 

for a total 4.856 deg 

The sun 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 -r +40.932 -d +15.823 -w ibex-sun -t 2016/05:03:12:23:37 

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

points axis +1.000000,+0.000000,+0.000000 

towards ECI +0.726861,+0.630338,+0.272666 

which is R.A. +40.932 Decl. +15.823 

missing R.A. +40.932 Decl. +15.823 (ibex-sun) 

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

for a total 0.000 deg 

ibex_rotate -o -r +40.932 -d +15.823 -w ibex-sun -t 2016/05:03:13:53:43 

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

points axis +1.000000,+0.000000,+0.000000 

towards ECI +0.726861,+0.630338,+0.272666 

which is R.A. +40.932 Decl. +15.823 

missing R.A. +40.993 Decl. +15.842 (ibex-sun) 

error is R.A. +0.061 Decl. +0.019 

for a total 0.062 deg 

ibex_rotate -o -r +40.932 -d +15.823 -w ibex-sun -t 2016/05:07:14:52:02 

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

points axis +1.000000,+0.000000,+0.000000 

towards ECI +0.726861,+0.630338,+0.272666 

which is R.A. +40.932 Decl. +15.823 

missing R.A. +44.781 Decl. +16.998 (ibex-sun) 

error is R.A. +3.849 Decl. +1.175 

for a total 3.875 deg 

The sun precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 326 apogee: 

ibex_rotate -o -r +44.879 -d +17.024 -w ibex-sun -t 2016/05:07:17:28:01 

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

points axis +1.000000,+0.000000,+0.000000 

towards ECI +0.677549,+0.674694,+0.292772 

which is R.A. +44.879 Decl. +17.024 

missing R.A. +44.879 Decl. +17.024 (ibex-sun) 

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

for a total 0.000 deg 

ibex_rotate -o -r +44.879 -d +17.024 -w ibex-sun -t 2016-05-12T19:20:07.602Z 

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

points axis +1.000000,+0.000000,+0.000000 

towards ECI +0.677549,+0.674694,+0.292772 

which is R.A. +44.879 Decl. +17.024 

missing R.A. +49.959 Decl. +18.328 (ibex-sun) 

error is R.A. +5.080 Decl. +1.304 

for a total 5.013 deg 

No Lo O-mode. 

There is no overlap with orbit 324 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: "Wesley.Sheral" <sheral.wesley at orbitalatk.com>, "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>, "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> 
Sent: Sunday, April 17, 2016 11:41:17 AM 
Subject: IBEX Orbit# 325 ATS Approval v002 (28 Apr 16 - 8 May 16) 

Guys, 

Here is v002 of the ATS. 

Note the following changes 

1. Battery Balancing time 

2. No SSR_Dump/Tracking Contact commands 

I have scheduled this contact as a Blind_acq which will allow us to turn on the transmitter earlier and have more SSR_Download time 

If the star tracker is not fixed by perigee of Orbit# 324, this contact will be extended 30 minutes 

Sheral R. Wesley 

IBEX Mission OPS 

CRS/CYGNUS Mission Planning 

Bldg. 2 Room 1337 

Office (703) 406-5641 

Cell (202) 236-0802 

From: Wesley.Sheral 
Sent: Friday, April 15, 2016 1:55 PM 
To: David Heirtzler; IBEX-FDG; IBEXOPS; ISOC; Ken Fairchild; Lockwood.Robert; Michelle Reno; Nigel Angold; Paul Janzen; Perry.Tim; Tyler.Ryan; Wesley.Sheral 
Subject: IBEX Orbit# 325 ATS Approval (28 Apr 16 - 8 May 16) 

Guys, 

Here are the planning files and ATS for Orbit# 325. 

Please respond to this email thread with your comments and approvals 

Approvals are required before 18 Apr 16 @1700 UTC 

Note the following: 

1. No Ascending BUS command for SetSpinPulseProtectEnable Enable 

2. Apogee and Perigee Sun Maneuvers 

3. Perigee Battery Balancing Commands 

Orbit# 325 PERIGEE: Battery Balancing Commands 

# 2016-05-08T02:08:39.614Z,Perigee,orbit:325 

SetLongEclipseFlag TRUE $TIME=2016/05:08:01:00:00 

SetLongEclipseFlag FALSE $TIME=2016/05:08:20:30:00 

4. Moon in Lo FOV Commands 

# 2016-04-29T11:11:49.884Z,MoonInLoFovStart,orbit:325 

# 2016-04-29T12:54:35.274Z,MoonInLoFovStop,orbit:325 

5. Command Load Constraint Violation Report 

IBEX_2016_119_o0325a_Recovery_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 2016/04/29 07:44:07 UTC 

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

transition to science mode at 2016/05/03 13:23:45 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, that data subject to the International Traffic in Arms Regulation cannot be disseminated, distributed or copied to foreign nationals, residing in the U.S. or abroad, absent the express prior approval of the U.S. Department of State. 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/20160418/106410fb/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/20160418/106410fb/image001-0001.jpg 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IBEX-Command-Approval-Checklist-Rev15-o0325-recovery_KWF.doc
Type: application/msword
Size: 121344 bytes
Desc: not available
Url : http://lists.sr.unh.edu/pipermail/isocops/attachments/20160418/106410fb/IBEX-Command-Approval-Checklist-Rev15-o0325-recovery_KWF-0001.doc 