[Isocops] ATS for Orbit# 205 (4 - 13 May 2013)

Sun Apr 21 20:02:37 EDT 2013

Tim, 

I noticed that the .oef file says that the predictive file 

IBEX_Ephem_2013_097_09_29_v002.e 

was used to generate it. However, the current predictive file is 

IBEX_Ephem_2013_106_08_21_v001.e 

Is there a reason why you used the older predictive file? 

By the way, I discovered that we are no longer including the predictive ephemeris file in the STF header comments. That's because the current 140 day predictive files end after the current 2 year predictive file. I've requested a new 2 year predictive file. 

Ken 

----- Original Message -----
From: "Tim Perry" <Perry.Tim at orbital.com> 
To: "Bret Hautamaki" <hautamaki.bret at orbital.com>, "IBEX-FDG" <IBEX.fdg at applieddefense.com>, "IBEXOPS/ORB" <ibexops at orbital.com>, "ISOC at New Hampshire" <isocops at lists.sr.unh.edu>, "John Cavallo" <cavallo.john at orbital.com>, "Mark Tapley" <mtapley at swri.edu>, "Nigel Angold" <ngangold at earthlink.net>, "Robert Lockwood" <lockwood.robert at orbital.com>, "Roland Vanderspek" <roland at space.mit.edu>, "Ryan Tyler" <tyler.ryan at orbital.com>, "Sheral Wesley" <wesley.sheral at orbital.com>, "Thomas Regiec" <regiec.thomas at orbital.com>, "Tim Perry" <perry.tim at orbital.com> 
Sent: Saturday, April 20, 2013 12:22:59 PM 
Subject: [Isocops] ATS for Orbit# 205 (4 - 13 May 2013) 

All, 
I did receive 2 errors. The Second one was an easy one and this is 
covered by the eclipse commands that we added for the medium eclipse. The 
first one took a little bit time to understand. In Orbit 204 there was a 
sun maneuver at Apogee. The maneuver window was from 2013-04-29T21:34:03 - 
2013-04-29T22:04:05 and the sun maneuver was from 2013-04-29T21:34:03 - 
2013-04-29T21:49:03. So, in the OEF file for Orbit 204 these times were 
correct. Now, when the new forecast STF file was used to generate the OEF 
file for Orbit 205. The maneuver window had shifted by 1 minute and 31 
seconds. In the Orbit 205 OEF file I found that the sun maneuver begin was 
pulled from the history. But the sun maneuver end was not and I think that 
this was because of where the new maneuver window begin was placed in the 
OEF file. The end time is the last time in the orbit 205 OEF file. MPS 
tried to find the SunMvrEnd and it couldn't. The sun maneuver was 
successful. So, I am comfortable with releasing this command load for 
everyone to approve. 

Please respond to this email thread with your comments/approvals. All 
comments/approvals are required before 22 Apr 13 @2100 UTC 

========================== 
HARD CONSTRAINT VIOLATIONS 
========================== 
NO VIOLATIONS. 

========================== 
SOFT CONSTRAINT VIOLATIONS 
========================== 
IBX-CLC-001: Sun precession maneuver at 2013/04/29 21:34:03 UTC - 
2013/05/18 
09:52:58 UTC (one endpoint unknown) overlaps eclipse at 
2013/05/04 
19:45:49 UTC - 2013/05/04 20:52:24 UTC 
IBX-CLC-015: Battery charge falls below minimum from 2013/05/04 20:39:49 
UTC - 
2013/05/04 21:20:04 UTC. Lowest charge level is 7260.242983 
watt-minutes during this interval. 

============== 
OTHER MESSAGES 
============== 
NO MESSAGES. 

STF files: 
# Filename: IBEX_2013_forecast_04mar13-18jun13_v001.stf 
#Orbit: 204 
# Sun pointing maneuver 
2013-04-29T21:34:03.000Z|ManeuverWindowStart 
2013-04-29T22:04:05.000Z|ManeuverWindowEnd 

# Filename: IBEX_2013_forecast_01apr13-24jul13_v001.stf 
#Orbit: 204 
# Sun pointing maneuver 
2013-04-29T21:35:34.000Z|ManeuverWindowStart 
2013-04-29T22:05:36.000Z|ManeuverWindowEnd 

OEF Files: 
# Filename: IBEX_2013_115_o0204a_v001.oef 
2013-04-29T21:34:03.000Z,ManeuverWindowStart 
2013-04-29T21:34:03.000Z,SunMvrBegin, 
2013-04-29T21:49:03.000Z,SunMvrEnd 
2013-04-29T22:04:05.000Z,ManeuverWindowEnd,orbit:204 

# Filename: IBEX_2013_125_o0205a_v001.oef 
2013-04-29T21:34:03.000Z,SunMvrBegin, 
2013-04-29T21:35:34.000Z,ManeuverWindowStart,orbit:204 
2013-04-29T22:05:36.000Z,ManeuverWindowEnd,orbit:204 

(See attached file: IBEX_2013_125_o0205a_v001.ccvr)(See attached file: 
IBEX_2013_125_o0205a_v001.oef)(See attached file: 
IBEX_Orbit205Contacts.txt)(See attached file: 
IBEX_2013_125_o0205a_v001.txt) 

Timothy E. Perry 
IBEX Mission Ops Lead 
perry.tim at orbital.com 
Office: (703) 406-5976 
Cell:(301) 606-1430 

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