Asteroid To Orbit Moon?

A plan to find a small nearby asteroid and move into orbit around the Moon is now being talked about in the halls of NASA. The study, from the Keck Institute for Space Studies, examines the feasibility of carrying out the project in the next decade.


(Multi-Mission Space Exploration Vehicle approaches an asteroid [NASA])

The two major conclusions from the KISS study are: 1) that it appears feasible to identify, capture and return an entire ~7-m diameter, ~500,000-kg near-Earth asteroid to a high lunar orbit using technology that is or could be available in this decade, and 2) that such an endeavor may be essential technically and programmatically for the success of both near-term and long-term human exploration beyond low-Earth orbit. One of the key challenges the discovery and characterization of a sufficiently large number of small asteroids of the right type, size, spin state and orbital characteristics could be addressed by a low-cost, ground-based observation campaign identified in the study. To be an attractive target for return the asteroid must be a C-type approximately 7 m in diameter, have a synodic period of approximately 10 years, and require a ∆V for return of less than ~200 m/s. Implementation of the observation campaign could enable the discovery of a few thousand small asteroids per year and the characterization of a fraction of these resulting in a likelihood of finding about five good targets per year that meet the criteria for return.

Proof-of-concept trajectory analysis based on asteroid 2008 HU4 (which is approximately the right size, but of an unknown spectral type) suggest that a robotic spacecraft with a 40-kW solar electric propulsion system could return this asteroid to a high-lunar orbit in a total flight time of 6 to 10 years assuming the asteroid has a mass in the range of 250,000 to 1,000,000 kg (with the shorter flight times corresponding to the lower asteroid mass). Significantly, these proof-of-concept trajectories baseline a single Atlas V-class launch to low-Earth orbit.

The study also considered an alternative concept in which the spacecraft picks up a ~7-m diameter rock from the surface of a much larger asteroid (> 100-m diameter). The advantage of this approach is that asteroids 100-m in diameter or greater are much easier to discover and characterize. This advantage is somewhat offset by the added complexity of trying to pick up a large 7-m diameter rock from the surface, and the fact that there are far fewer 100-m class NEAs than smaller ones making it more difficult to find ones with the desired orbital characteristics. This mission approach would seek to return approximately the same mass of asteroid material of order 500,000 kg as the approach that returns an entire small NEA.
(Asteroid Retrieval Feasibility Study)

Update: See also this material on the AsterAnts: A Concept for Large-Scale Meteoroid Return and Processing, a proposal that dates from the late 1990's. (Thanks to Ashley for pointing this one out.) End update.

Robert Heinlein wrote about capturing an asteroid and changing its orbit in his still excellent 1939 short story Misfit:

Eighty-eight swung some millions of miles further around the sun. The pock-marks on her face grew deeper, and were lined with durite, that strange close-packed laboratory product which (usually) would confine even atomic disintegration. Then Eighty-eight received a series of gentle pats, always on the side headed along her course. In a few weeks' time the rocket blasts had their effect and Eighty-eight was plunging in an orbit toward the sun.

When she reached her station one and three-tenths the distance from the sun of Earth's orbit, she would have to be coaxed by another series of pats into a circular orbit. Thereafter she was to be known as E-M3, Earth-Mars Space Station Spot Three.
(moving an asteroid)

Via Yahoo.

Scroll down for more stories in the same category. (Story submitted 1/8/2013)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 3 )

Related News Stories - (" Space Tech ")

How Do You Put An Asteroid Into Earth Orbit? Carefully!
'...she would have to be coaxed by another series of pats into a circular orbit.' - Robert Heinlein, 1939.

PD Aerospace Space Plane By 2023
'The sleek, tapered space shuttle lay immobile upon the private landing field...' - Frederic Arnold Kummer, Jr., 1940.

International Space Station Leak Plugged - With Finger
'These tag-alongs search out stray leaks' - Robert Heinlein, 1948.

Space Drones - UK's Effective Space To Launch Rocket Tugs
'Twenty rocket tugs towed it from its Earth hangar out into space.' - Nat Schachner, 1937.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

Superstrong Multilayer Metal-Graphene Composite Material
Negligible increase in weight increased material strength by hundreds of times.

Deepfakes Imperil Democracy (George Orwell, Right Again)
'All history was a palimpsest, scraped clean and reinscribed exactly as often as was necessary.'

String Art Courtesy Of Robot Artist
The number of different ways to span a thread between a larger number of hooks is astronomical.

Still Wondering If You'd Work For A Robot Boss?
'This is all coming to you courtesy of the simstim unit wired into your deck, of course.'

World's First Autonomous Tram In Germany
What's it like for autonomous trams when they're turned off at night?

Sleeep PRO Earplug For Maximum Rest
'Merton... placed the electrodes of the sleep-inducer on his forehead.'

Inspired By Japan, Nap Pods For Hajj
It's always a good time for a nap.

Amphibio 3D Printed Gill Shirt
'... we can descend and live down there at one of those year-round aquatic resorts.'

How Do You Put An Asteroid Into Earth Orbit? Carefully!
'...she would have to be coaxed by another series of pats into a circular orbit.'

PD Aerospace Space Plane By 2023
'The sleek, tapered space shuttle lay immobile upon the private landing field...'

Foldimate Folds Your Clothes Perfectly
Look ma, my room is clean! I can hear you now.

Robots Help People Get Dressed, As Predicted In 1931
Yes, people of the future, robots will dress you.

International Space Station Leak Plugged - With Finger
'These tag-alongs search out stray leaks.'

Robot Snake Flies, Fights Fires
Just a prototype, but still amazing.

IPAL Chinese Robot Babysitter
'But Nanny is different...'

ZKZM-500 LASER Assault Rifle
'The Iranian reached back into the locker and got a pair of laserifles.'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.