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I typed much of this several months ago, also some of the material on colonization which has been moved to colonization of Mercury. Keep on editing my posts as I still have a lot to learn. I'm unable to edit 5% to 15% of this talk page, so a paste follows:  But also ""corrected"" the straight forward surface gravity from 2.78 m/s² to 0.926 m/s². Fits with the compared-to-Earth number of 0.0945, at least. But meanwhile, using the numbers in there for the mass and diameter, I get a surface gravity of 3.70 m/s². Looking back through the history, it's been 2.78 m/s² since the page first got a surface gravity. What gives?!? 
 2.78 meters per second per second = m/s2 is likely low, but 3.70 is likely a bit high. 0.96 m/s2 is way low, as is 0.0945 for Earth. 0.96g might be correct for Earth's gravity in low Earth orbit, but it is likely a bit less, or it might be Earth's surface g at Earth's equator but likely that is a bit more.  Neil  "