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NEAR In Good Hands


Washington - March 12, 2000 -
The NEAR satellite continued to operate nominally this past week in orbit around the asteroid Eros. NEAR has been in Operational Mode with Flight Computer #1 and Attitude Interface Unit #2 in control.

All instruments remained "ON" during this week. S/C attitude pointing continues to alternate between Eros nadir proximity pointing, Earth pointing, and Sun pointing as required to conduct Eros orbital operations. NEAR will have completed its first month in Eros orbit next Tuesday.

Latest orbit solutions from JPL Navigation indicated NEAR is presenting in a 200.6 Km by 209.1 Km orbit around Eros. NEAR will stay in this orbit conducting Science observations until April 2, 2000 when an Orbit Correction Maneuver will place NEAR in a 200 Km x 100 Km transfer orbit.

The XGRS instrument made its first direct measurement of Eros's elemental composition this past week during a brief period of intense solar activity. Congratulations to the XGRS team!

In addition, the Gamma Ray Burst experiment continues to provide valuable timing information that supports determining Gamma Ray Burst points of origin. This effort recently confirmed NEAR's onboard timing accuracy to 100 ms.

Operations efforts this week focused on preparing for next week's momentum bias maneuver planned for March 15th. All preparations are now complete.

Science activities conducted this week included Eros "high altitude" ~200 Km observations with the MSI, NIS, MAG, NLR and XGRS instruments. Activities conducted are too numerous to mention here. Please consult science timelines for more details.

Upcoming Spacecraft Activities
In addition to regular Eros Science and Optical Navigation, the following are operationally significant activities planned for the near future:


March 15        Propulsive Momentum Bias
March 22        Propulsive Momentum Bias
April 2         Eros Orbit Correction Maneuver 3
               (200 Km x 100 Km transfer orbit)
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