SOHO Daily Meeting Minutes for Wednesday, 9 February 2000 Chaired by: J. Hollis (SOC) Notes: Kevin Schenk (EIT) DOY: 040 ANNOUNCEMENTS ------------- * To date, the long term schedule for the upload of new gyroless patches remains the same: March 6-10. The patches can be done in Normal Mode. Station keeping and momentum management maneuvers are planned for the last week in March, prior to the 3 month MDI continuous. * Ed Roelof of Johns Hopkins University Applied Physics Lab will be giving a talk on "Probing Solar Coronal Particle Acceleration with 40-300 keV electrons on ACE" in Room 8 of Building 2, at 12 noon this Friday, February 11. His talk will include a discussion of the potential solar sources of the ACE observations. * See the SOHO home page for the latest "Hot Shots" and 100th Comet Discovery Press Release. FOT REPORT ---------- Spacecraft Status: Nominal Spacecraft Anomalies: None Accomplished Activities: CRP Recovery, VIRGO, RSL, Guide Star swap (5.75 mag) Planned Activities: VIRGO Upcoming Operations: Feb 10 - Start MDI Continuous Ops (5 days) Ground Anomalies: 1440 TSTOL procedure problem caused CRP transition; back in normal mode by 20:11 UT. 1607 TM Dropout; D27 Antenna Controller failed (15 min, unrecoverable) Yesterday, the procedure that recalculates a new roll steering law offset value for the new guidestar used an old input value due to the timing of the incoming telemetry formats, causing a larger than usual RSL offset (still within spec). This resulted in a 1600 arcsecond shift in the spacecraft roll position and a transition into CRP mode. To prevent future occurances, a one-minute wait will be added to the procedure before the offset is zeroed out, allowing enough time to read the updated telemetry formats. SOLAR STATUS ------------ SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE LOW TO MODERATE. SIGNIFICANT FLARE ACTIVITY IS MOST LIKELY IN REGIONS 8858 AND 8861. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED. 02/08 DOY 039 - 02/09 DOY 040 EIT daily On-Line Solar Status and observations: http://umbra.nascom.nasa.gov/eit/plan/log_form20000209.html 02/09 DOY 040 Lasco C2 sees large CME eruption due to the C8 flare just East of North Pole at 01:31 UT. Large emission with twisting structure, continued outflow through morning. 03:30 UT jetlike CME in SSW. INSTRUMENT STATUS ----------------- CDS: Nominal. Continued observing through CRP event. Sunspots Study of cluster near disk center of AR 8856. Today repeating Sunspots Study and CME watch with UVCS on East limb. Flare interrupt campaign if possible target arises. UVCS: Nominal. Recovered at 21:54 UT yesterday. CME Watch campaign in the East starting at 15:30 for 10 hours. LASCO: Nominal. Recovered at 21:30 UT yesterday. Observations with C2 and C3 while CME watching. EIT: Nominal. Supported VLA study with Rob Wilson with 195 Angstroms at a 6-minute cadence till 21:30 UT. Today, Full resolution 195 Angstrom images at 12-minute cadence. MDI: Nominal. Recovered at 21:00 UT. No VLA Observations. Full disk observations today; supporting emerging flux program with TRACE. TRACE: Nominal. Tracking AR 8858 across disk. May start emerging flux program South of AR 8858 later.