What's the best way to land on a spinning asteroid? Forum: Spacesettlers
Thread: What's the best way to land on a spinning asteroid?
# 10572 bydondanthony@... on April 11, 2008, 11:55 p.m.
Member since 2021-10-03
Wasn't the question "the best way to land"?
Match the spin, then descend.
In my opinion.
To: spacesettlers@yahoogroups.comFrom: lucioc@...: Fri, 11 Apr 2008 19:22:52 -0300Subject: Re: [spacesettlers] What's the best way to land on a spinning asteroid?
On Fri, Apr 11, 2008 at 7:09 PM, Michael Persohn-Costa wrote:(...)> Probably the asteroids structure, if it is a single piece of material. I> believe this is how astronomers currently determine the structuralstrength> of asteroids, by checking if it's spin would pull it apart if gravity were> all that was holding it together. This underestimates the strength of> nickle-iron asteroids for sure, but it does determine which asteroids must> be more than lumps of dust.(...)I suspect that there are very few asteroids of the thousands and thousandsof known ones that rotate faster than what its gravity can hold. In fact theonly one that I know is 1998KY26,which rotates once each five minutes and is 30 meters across, so it has tobe strong enough to hold itself against an acceleration of 0.0001 g or so(which despite being a ridiculous value would still be higher than itsgravity, I think).IIRC, though, typically asteroids have periods of a few *hours*, resultingin negligible centrifuge effect, and so using speed of rotation to findstrong asteroids would yield very few results, I am afraid.