This directory contains long-term predict MGS trajectory SPKs overlapping 
MER surface operations time interval:

spk_031201-040401_020415.bsp
spk_040401-040801_020416.bsp
spk_040801-050101_020416.bsp

They have been created by MGS NAV in July 2002.

The release form that accompanied these files is provided at the end of this 
file.
 
Note that these SPKs were initially released for the s/c ID -95 (MGS SIM). 
This ID has been replaced by the s/c ID -94 (MGS OPS) in October 18, 2002.

Contact Boris Semenov, NAIF (4-8136) or Stuart Demcak, MGS NAV (x3-7961)
if you have any questions regarding these files.

-------------------------------------------------------------------

MSOP     FILE RELEASE FORM

Mission Name:       MARS_GLOBAL_SURVEYOR
Spacecraft Name:    MARS_GLOBAL_SURVEYOR_SIM
 
File Name:          optg_030701-040301_020415
File Type:          OPTG
File Creation Time: 2002-105T18:09:22
DOM Store Time:     2002-200T22:25:43
File Start Time:    2003-182T00:00:00.000
File Stop Time:     2004-092T01:00:00.000

File Name:          optg_040301-050101_020416
File Type:          OPTG
File Creation Time: 2002-106T12:03:06
DOM Store Time:     2002-200T22:26:08
File Start Time:    2004-092T00:00:00.000
File Stop Time:     2005-001T01:00:00.000

File Name:          spk_031201-040401_020415
File Type:          MO-M-SPICE-6-SPK-V1.0
File Creation Time: 2002-200T16:00:00
DOM Store Time:     2002-203T14:35:20
File Start Time:    2003-12-01T00:00:00.000
File Stop Time:     2004-04-01T01:00:00.000

File Name:          spk_040401-040801_020416
File Type:          MO-M-SPICE-6-SPK-V1.0
File Creation Time: 2002-200T16:03:58
DOM Store Time:     2002-203T14:36:49
File Start Time:    2004-04-01T00:00:00.000
File Stop Time:     2004-08-01T01:00:00.000

File Name:          spk_040801-050101_020416
File Type:          MO-M-SPICE-6-SPK-V1.0
File Creation Time: 2002-200T16:09:21
DOM Store Time:     2002-203T14:38:24
File Start Time:    2004-08-01T00:00:00.000
File Stop Time:     2005-01-01T01:00:00.000


Notes:
~~~~
These files should be used for planning purposes only.  They should
NOT be used for MGS flight operations.  The S/C ID is 95.

These files are extensions of the 4/12/2002 6 month MGS delivery.  No OSM
maneuvers (for MER synchronization) were included.  An acceleration of
0.10e-10 km/s^2 was used to simulate predicted AMD events.

Note that NAV has made its best attempt to model the future AMD effects and
C-mode occurances.  However, future AMDs can be quite different than the
predictions.  So the predicted trajectory will be subject to these
perturbations and/or uncertainties.


Prepared by:        Stuart Demcak       Mon Jul 22 07:49:23 PDT 2002
Approval:           Pat Esposito