ACE Weekly 01/16/03 - 01/22/04 All ACE spacecraft subsystems are performing nominally. An attitude maneuver was successfully executed on 01/16/04. The next attitude maneuver is scheduled to occur on 01/28/04. ============================================================================ Orbit Events: Per Craig Roberts (FDF): The next ACE transit begins February 22 and ends March 15 (a span of 22.49 days). This one will involve the closest angular approach to the Sun yet seen, i.e., 0.63 degree (deg) from solar center. (By comparison, the solar angular radius as seen from Earth at that epoch will be approx. 0.27 deg). The updated details and epochs (UTC) follow: 22 Feb 05:22 4.75 deg inbound 28 Feb 15:51 2.0 deg inbound 1 Mar 17:19 1.19 deg inbound 3 Mar 21:57 0.63 deg closest approach 6 Mar 13:40 1.19 deg outbound 8 Mar 17:55 2.0 deg outbound 15 Mar 16:14 4.75 deg outbound The 1.19 deg reference was included because that was the closest approach during the December transit. ACE will spend 4.85 days within the 1.19 deg zone. ===================================================================== OCRs Executed: None. ===================================================================== Ongoing Activities: TAPS: Release 4.1.13 was delivered on 01/06/04 and is currently being tested by the FOT. Open DRs have been prioritized by the FOT in preparation for transition. ---------------------------------------------------------------------------- Automation (ROBOTT): - Release 0.4 (HSM & OFFLINE) was installed on String 1 on 01/21/04. The Command & Control component was not delivered because it is NOT ready for operational use. The FOT will verify 7 DRs in this release. - The Automation team is currently fixing and testing OPEN DRs on String 3. - The FOT will able to begin testing new fixes on String 3 next week. ===================================================================== Anomalies: NONE ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Glen A. Miller ACE Flight Operations Observatory Engineer Honeywell Technology Solutions Inc. Goddard Space Flight Center Building 14, Room W10A Mail Stop 428.2 Greenbelt, MD 20771 Office: 301-286-7071 Pager: 800-425-3174 Fax: 301-286-1729 Email: gamiller@pop500.gsfc.nasa.gov ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~