Dawn’s last look at Ceres


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Ceres

The Dawn mission has ended, and the image on the right, reduced to post here, is one of its last views of Ceres, with the bright spots of Occator Crater clearly visible, before its fuel ran out. You can see the full resolution image by clicking on the image.

This photo of Ceres and the bright regions in Occator Crater was one of the last views NASA’s Dawn spacecraft transmitted before it depleted its remaining hydrazine and completed its mission.

This view, which faces south, was captured on Sept. 1, 2018 at an altitude of 2,340 miles (3,370 kilometers) as the spacecraft was ascending in its elliptical orbit. At its lowest point, the orbit dipped down to only about 22 miles (35 kilometers), which allowed Dawn to acquire very high-resolution images in this final phase of its mission. Some of the close-up images of Occator Crater are shown here.

Occator Crater is 57 miles (92 kilometers) across and 2.5 miles (4 kilometers) deep and holds the brightest area on Ceres, Cerealia Facula in its center and Vinalia Faculae in its western side. This region has been the subject of intense interest since Dawn’s approach to the dwarf planet in early 2015.

If NASA made any specific announcement about the end of the mission, I have missed it. Either way, this end is not a surprise, because they have made it clear for the past few months that the spacecraft was about to run out of fuel.

They have also posted today an image of Ceres’ largest mountain, Ahuna Mons.

Update: Even as I posted this, NASA sent out this press release: NASA’s Dawn mission comes to an end

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2 comments

  • Jim Roberts

    Delightful!

    More pictures any 12-year old with Gimp could create!

    I wonder if the corporate chieftains pocketing the dough for these missions even pay the artists or just borrow projects from the local junior high school.

  • Tom Billings

    “I wonder if the corporate chieftains pocketing the dough for these missions even pay the artists or just borrow projects from the local junior high school.”

    HS students would never have been inventive enough to draw out a kilometers-wide field of carbonate deposits on a body with vacuum all around it. Only a world that has water to dissolve these compounds offers carbonates in that quantity. Yet, somehow Ceres does just that. Of course, if you believe that all science disciplines have sunk to climate science levels of quality, then you might believe this. You still have to demonstrate they *are* at such low levels, however.

    The Congress members who insist their voter vassals and their corporate vassals get the benefit of their “zip-code engineering” are doing it for their own power. They realize that a too steep disconnect from reality will lose them their power, …as climate science has helped do for the minority Party in Congress. That will mean we can carefully examine the data, and come to useful conclusions.

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