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Questions tagged [ceres]

Questions about a large asteroid named Ceres.

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Terraform via moving Ceres To Mars orbit, using ion drive

EDIT: Apparently the accepted physics has changed, and we now use the convection model for generating planetary magnetic field, not the dynamo model. Next thing you know people will be telling me ...
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Manned exploration or Colonization of Ceres — Any studies

There has been much discussion, here and elsewhere about the manned exploration or colonization of Mars. Among the problematic aspects are shortages of hydrogen and nitrogen in most areas, dust, and ...
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How can I verify my reconstructed gravity field of Ceres from spherical harmonics?

Based on @DavidHammen's very helpful answer I've made progress reconstructing the gravity field of Ceres from the Dawn radiometric data. The question there contains further information, but suffice it ...
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Ceres gravity from spherical harmonics from Dawn, how to get the coefficients, definitions and potential?

update: I think I've found what I'm looking for. The file JGDWN_CER18C_SHA.TAB has what looks like spherical harmonics up to order 18, except I don't know the ...
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Is Dawn's upcoming low periapsis orbit for XMO7 “resonant”?

The Spaceflight Insider article Dawn will enter lowest ever orbit around Ceres says: In his Dawn Journal blog, mission director and chief engineer Marc Rayman discussed the challenges of bringing ...
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Xenon vs Hydrazine, “Should I Stay or Should I go?” Dawn mission decisions

edit 2: There seems to have been some announcement/extension by NASA (20-Oct-2017), possibly this will shed more light on the issues in this question. edit 1: Several months have passed since this ...
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Those bright spots on Ceres — are scientists still “scratching their heads”?

A while back the Dawn spacecraft took some photographs of the surface of Ceres while it was first approaching, and there were these surprising, mysterious white dots that nobody could explain. For ...
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How fast could the rotation of asteroids and planetoids be sped up before they disintegrate?

I am currently reading the The Expanse novel series. In the books there are several space colonies that are basically asteroids or planetoids (in particular Eros and Ceres) that have been spun up to ...
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Dawn Spacecraft: Why are the orbits so high?

I understand Dawn has a mission to undertake geologic ("Cereologic"?) mapping of Ceres, but its final orbit will be at 22,000 km / 49% disk illumination. Surely, there would be some value for ...
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Why explore Ceres?

The multi-target orbiter Dawn spacecraft, launched in 2007, is now approaching the dwarf planet Ceres and had recently sent high resolution images of Ceres from a distance of 46,000 km. What is so ...
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How will the ion thruster powered Dawn spacecraft enter orbit around Ceres?

How is it possible for a ion thruster powered spacecraft like Dawn to decelerate to orbit Ceres? Does it have a secondary engine to accomplish this task?
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Could a Human reach escape velocity by jumping from the surface of Ceres (a dwarf planet)?

According to this answer the surface gravity of Ceres is estimated to be only $0.27 m/s^2$. With a rotation period of 9 hours. The gravity seems light enough to overcome by leg muscle alone, and if ...
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Feasibility of colonising Ceres?

Ceres is a dwarf planet in the midst of the Asteroid Belt between Mars and Jupiter - its location in the Asteroid Belt makes it a good base to mine the riches believed to exist in the asteroids. ...
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What engineering challenges would be posed by a manned mission to Ceres? [closed]

I have read a lot of literature concerning manned missions to the Moon, Mars, and the Jovian moons. Something I have not heard much about, despite it's relative distance and interesting composition, ...