Cassini Significant Events 06/23/10 - 06/29/10
The most recent spacecraft telemetry was acquired on June 29 from the
Deep Space Network tracking complex at Canberra, Australia. The Cassini
spacecraft is in an excellent state of health and all subsystems are
operating normally. Information on the present position and speed of the
Cassini spacecraft may be found on the "Present Position" page
at:
http://saturn.jpl.nasa.gov/mission/presentposition/
Wednesday, June 23 (DOY 174)
Science activities this week included Imaging Science (ISS), the
Cassini Plasma Spectrometer (CAPS), Magnetospheric Imaging Instrument,
and Ultraviolet Imaging Spectrograph (UVIS) monitoring Titan for clouds.
The Composite Infrared Spectrometer (CIRS) monitored the temperatures of
mid-northern Saturn latitudes, changes in the ring temperature post
Equinox, and measured oxygen compounds in the stratosphere of Saturn as a
function of latitude. The Radio and Plasma Wave Science instrument
measured thermal plasmas in Titan's ionosphere and surrounding
environment, searched for lightning in the atmosphere of Titan, and
investigated Titan's interaction with Saturn's magnetosphere. CAPS led a
southern auroral observation coordinated with ISS and UVIS. All three
instruments performed calibrations, and Radio Science performed
calibrations on the ultra stable oscillator. The Cosmic Dust Analyzer
(CDA) performed an interstellar dust observation.
Thursday, June 24 (DOY 175)
Orbit Trim Maneuver (OTM) #254 was performed today. This was the
cleanup maneuver after the Titan 70 flyby on June 21. The main engine
burn began at 2:15 AM PDT. Telemetry immediately after the maneuver
showed a burn duration of 5.026 seconds, giving a delta-V of 0.867 m/s.
All subsystems reported nominal performance after the maneuver.
Friday, June 25 (DOY 176)
The S60 sequence concluded and S61 began execution today. The
sequence will run for 35 days and conclude on July 30. During that time
there will be one targeted encounter of Titan and five non-targeted
flybys - Calypso, Enceladus and Daphnis on DOY 186, and Prometheus and
Atlas on DOY 206. Four OTMs are scheduled, numbered 255 through
258.
Tuesday, June 29 (DOY 180)
A mini-sequence for the S61 DOY 180 CDA flight software re-load
executed today. The sequence included disable/enable ping-pong commands
from CDS.
A kick off meeting was held today for the S61 DOY 186 Saturn Live
Inertial Vector Propagator update. A Go-No go meeting is scheduled for
tomorrow. If approved, the files will go up to the spacecraft on
Saturday, July 3.
Each month the Cassini Project coordinates a teleconference for NASA
Outreach communities. This month is the first of two Anniversary talks
presenting Cassini highlights of the past year. The Topic: "Cassini
Huygens Mission to Saturn Sixth Anniversary -- Part 1 - Mission Overview,
Highlights of Magnetospheric Science, Icy Satellite and Titan
Science." An audio recording of the conference will be available on
the Cassini website within a couple of days. To down load the
presentation package link to:
http://saturn.jpl.nasa.gov/video/products/MultimediaProductsCharm/
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