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THIS AREA NO LONGER BEING USED – WE KEEP IT HERE FOR REFERENCE ONLY


MMS Science Working Team Notes / News:

1. 0 Travel Notes

  • Chapman Conference and AGU NCTS approvals have gone out

 

2.0  Orbit Management:

 

3.0  Tetrahedron Management:

To date: 

Rev 21925km Formation  

Resize maneuver was during Rev 217&218. Tq= 1, QAv = 0.947.  Prediction is that another formation maintenance maneuver won't be needed until Rev 251/252 (DOY 322/323).

  
REV 191Rev 206Rev 213 
 
REV 143REV 174REV 184 
 

 

  • STP-MMS-P40: Spacecraft Constellation Formation Quality.  A Quality Factor shall be developed that defines the usefulness of the tetrahedron formation of the four spacecraft that is the product of two functions. One function is a metric of the inner spacecraft separation, and the other is a metric of the tetrahedron shape.  This Quality Factor shall be greater than or equal to 0.7 for 80% of the time in the regions of science interest. The regions of science interest are defined as geocentric distances >9 RE for Phase 1, and >15 RE for Phase 2. There is no formation requirement or region of science interest defined during the transition from Phase 1 to Phase 2.

 

 

 

 

Mission Phases

Phase 1a – September 1, 2015
Phase 1x – March 8, 2016
Phase 1b – September 26, 2016
Phase 2a – January 31, 2017
Phase 2b – May 1, 2017

 

Formation Size

160 km DOY 188/190 (July 7/9)
60 km DOY 259/260 (Sept 16/17)
25 km DOY 273/274 (Sept 30/Oct 1)
10 km DOY 287/288 (Oct 14/15)
40 km DOY 350/351 (Dec 16/17)

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