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#1
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Best asteroids to colonize?
Some of the criteria I'm using:
Low inclination Perihelion near 1 A.U. Close to earth resonant orbits (good launch opportunities should reoccur on a regular basis). Asteroids with 5/4 year orbits: http://clowder.net/hop/railroad/1_25/1_25.html Asteroids with 4/3 year orbits: http://clowder.net/hop/railroad/1_33/1_33.html Asteroids with 3/2 year orbits: http://clowder.net/hop/railroad/1_5/1_5.html Asteroids with 5/3 year orbits: http://clowder.net/hop/railroad/1_66/1_66.html Asteroids with 2 year orbits: http://clowder.net/hop/railroad/2/2.html If any of the asteroids have volatiles, they might be able to export water, fuel and building materials to LEO. Also many of the above asteroids have close to 1.52 A.U. aphelions and so may occasionally have opportunities to ferry people & cargo to Mars. I am confused about claims of low DVs to land on asteroids. Most of the ones I looked at seem to require greater then Moon escape velocity DV to match orbits. About 3/4 of the way down http://www.permanent.com/t-theory.ht...eroid-missions the Permanent writer says ". . . the asteroid 1982DB, . . . needs a delta-v of a mere 0.06 km/sec (i.e., 60 meters per second, or 130 miles per hour) to be captured by the Earth-Moon system." I wish I know more about how low DV asteroid missions could be accomplished. Hop http://clowder.net/hop/index.html |
#2
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Best asteroids to colonize?
Hop David wrote in message ...
Some of the criteria I'm using: Low inclination Perihelion near 1 A.U. Close to earth resonant orbits (good launch opportunities should reoccur on a regular basis). Asteroids with 5/4 year orbits: http://clowder.net/hop/railroad/1_25/1_25.html Asteroids with 4/3 year orbits: http://clowder.net/hop/railroad/1_33/1_33.html Asteroids with 3/2 year orbits: http://clowder.net/hop/railroad/1_5/1_5.html Asteroids with 5/3 year orbits: http://clowder.net/hop/railroad/1_66/1_66.html Asteroids with 2 year orbits: http://clowder.net/hop/railroad/2/2.html If any of the asteroids have volatiles, they might be able to export water, fuel and building materials to LEO. Also many of the above asteroids have close to 1.52 A.U. aphelions and so may occasionally have opportunities to ferry people & cargo to Mars. I am confused about claims of low DVs to land on asteroids. Most of the ones I looked at seem to require greater then Moon escape velocity DV to match orbits. About 3/4 of the way down http://www.permanent.com/t-theory.ht...eroid-missions the Permanent writer says ". . . the asteroid 1982DB, . . . needs a delta-v of a mere 0.06 km/sec (i.e., 60 meters per second, or 130 miles per hour) to be captured by the Earth-Moon system." I wish I know more about how low DV asteroid missions could be accomplished. Hop http://clowder.net/hop/index.html This could probably be accomplished using an orion type propulsion system. We would deposit a large termonuclear bomb with a blast plate on the asteroid. The question is if it will hold together. Zoltan |
#3
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Best asteroids to colonize?
"Hop David" wrote in message ... Some of the criteria I'm using: Low inclination Perihelion near 1 A.U. Close to earth resonant orbits (good launch opportunities should reoccur on a regular basis). Asteroids with 5/4 year orbits: http://clowder.net/hop/railroad/1_25/1_25.html Asteroids with 4/3 year orbits: http://clowder.net/hop/railroad/1_33/1_33.html Asteroids with 3/2 year orbits: http://clowder.net/hop/railroad/1_5/1_5.html Asteroids with 5/3 year orbits: http://clowder.net/hop/railroad/1_66/1_66.html Asteroids with 2 year orbits: http://clowder.net/hop/railroad/2/2.html If any of the asteroids have volatiles, they might be able to export water, fuel and building materials to LEO. Also many of the above asteroids have close to 1.52 A.U. aphelions and so may occasionally have opportunities to ferry people & cargo to Mars. I am confused about claims of low DVs to land on asteroids. Most of the ones I looked at seem to require greater then Moon escape velocity DV to match orbits. About 3/4 of the way down http://www.permanent.com/t-theory.ht...eroid-missions the Permanent writer says ". . . the asteroid 1982DB, . . . needs a delta-v of a mere 0.06 km/sec (i.e., 60 meters per second, or 130 miles per hour) to be captured by the Earth-Moon system." I wish I know more about how low DV asteroid missions could be accomplished. I think they lowered it using lunar gravity assists. Blurrt Hop http://clowder.net/hop/index.html |
#4
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Best asteroids to colonize?
Zoltan Szakaly wrote: I wish I know more about how low DV asteroid missions could be accomplished. Hop http://clowder.net/hop/index.html This could probably be accomplished using an orion type propulsion system. We would deposit a large termonuclear bomb with a blast plate on the asteroid. The question is if it will hold together. Zoltan I am not interested in substantial DV for the entire asteroid, but in DV for importing/exporting to/from asteroid colonies. (I'm doing some comic stories set on asteroid colonies.) I've read in many places that DV for a sample return mission to a NEA could be much less than a moon sample return. I can get fly bys with low DV. But getting to the asteroid, matching velocities, and then returning to earth seem more costly than lunar missions. This is because the asteroids are really hauling ass at perihelion and this seems to more than offset advantages of tiny gravity well. I suspect and hope I'm wrong and readily admit being a rank novice. Hop http://clowder.net/hop/index.html |
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