01.07.08
MESSENGER's mid-December trajectory correction maneuver (TCM-19) went so well that the mission design and navigation teams have decided that a TCM scheduled for January 10 will not be needed.
|
| Photo Caption: Artist's depiction of MESSENGER at Mercury. |
On January 9, MESSENGER's Mercury Dual Imaging System cameras will begin gathering pictures of Mercury as the probe zeros in on the planet. With just one week to go before the January 14 flyby, the spacecraft is on target to encounter the planet at an altitude of about 120 miles. All subsystems and instruments are operating nominally and configured for the start of the flyby sequence, except for the Mercury Laser Altimeter and part of the Gamma-Ray Spectrometer, which will be turned on just before the flyby.
"We are about to visit Mercury for the first time in more than 30 years, and we can't
wait," said MESSENGER Principal Investigator Sean Solomon of the Carnegie Institution of Washington. "In addition to providing the critical gravity assist that will move MESSENGER along its path toward Mercury orbit insertion in March 2011, this flyby will let us see parts of Mercury never before viewed by spacecraft. We'll be making close-in observations of the composition of Mercury's surface and atmosphere, and we'll be probing deeper into the planet's magnetosphere than we've ever been. We expect many surprises."
Experience MESSENGER's Mercury Flyby Virtually
See Mercury through the "eyes" of MESSENGER's imagers with the Mercury Flyby Visualization Tool, now available at http://messenger.jhuapl.edu/encounters/. This new Web feature offers a unique opportunity to see simulated views of Mercury from MESSENGER's perspective, during approach, flyby, and departure, or in real-time (as the observations actually occur).
This tool combines the best available image map of Mercury's surface with observation sequences for the Mercury Dual Imaging System (MDIS), Mercury Atmospheric and Surface Composition Spectrometer (MASCS), and Mercury Laser Altimeter (MLA). The map of Mercury's surface combines Earth-based low-resolution radar images from the Arecibo Observatory in Puerto Rico and image mosaics from the Mariner 10 spacecraft flybys of Mercury in 1974 and 1975.
|
