Cassini Significant Event Report

For Week Ending 06/16/00

The most recent spacecraft telemetry data was acquired from the Canberra
tracking station on Wednesday, 06/14. The Cassini spacecraft is in an
excellent state of health and is operating normally. Instrument flight
software checkout continued this week with ISS collecting additional
darkframe datasets, and CIRS execution of a calibration activity. The speed of the spacecraft can be viewed on the "Where is Cassini Now?" web page.

A major activity for this week was Trajectory Correction Maneuver (TCM) 14.
Prior to uplink, the Cosmic Dust Analyzer (CDA), Magnetospheric Imaging
(MIMI), Ultraviolet Imaging Spectrograph (UVIS), Magnetometer (MAG), and
Radio and Plasma Wave Science (RPWS) instruments were transitioned to SLEEP
mode. The TCM-14 Mini-Sequence was then uplinked to the spacecraft. The
maneuver executed nominally at 10:00 AM PDT, with a main engine burn of
about 6 seconds and 0 .58 meters per second of velocity change. TCM-14
targets the correct position for a Jupiter gravity assist allowing Cassini
to arrive at the Saturnian System for a Phoebe flyby and Saturn Oribit
Insertion. Following TCM-14, CDA, MIMI, UVIS, MAG and RPWS were returned
to the ACTIVE mode.

The sub-sequence generation phase for C21 is now complete and work has
begun on the sequence integration and validation phase.

Outreach participated in a number of events this week: attended a
day-long familiarization of the Outdoor Education Program run by the Orange
County Office of Education, participated in an all-day workshop sponsored
by JPL's Educational Affairs Office discussing California and national
science and mathematics standards, assisted in the selection of new Solar
System Educators, and performed demonstrations of several classroom
activities to 23 teachers from Arizona Indian reservation schools.

Project Science Group Meeting (PSG) #23 was held June 5-9 at the University
of Nantes in Nantes, France.

The Multi-Mission Image Processing Laboratory (MIPL) delivered the L1A data
processing system for Jupiter Flyby to MIPL integration and test on June
13, and is on schedule to deliver the system to operations in mid-August.

The Preliminary Tour Operations Verification and Validation (V&V) Plan was
issued this week. This document outlines the strategy to verify and
validate Project Level 3 requirements, Operations Interface Agreements,
Operations Concepts, and to serve as a guide for development of Office/Team
V&V plans.

Additional information about Cassini-Huygens is online at

Cassini will begin orbiting Saturn on July 1, 2004, and release its piggybacked Huygens probe about six months later for descent through the thick atmosphere of the moon Titan. Cassini-Huygens is a cooperative mission of NASA, the European Space Agency and the Italian Space Agency. JPL, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Office of Space Science, Washington, D.C.

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