In all geologic time, the responsibilities are on our generation ... including you ...

§ 3.2.2 Asteroid materials retrieval

The delta-v's for known Earth-crossing asteroids are as low as 60 meters per second (60 m/s), as compared to the Moon's escape velocity of 2,400 m/s. There are many asteroids with required delta-v's lower than the lunar surface.

In a probable mission scenario to an asteroid, a large cargo will be launched into high Earth orbit and undergo a gravity assist by the Moon (discussed below) to pick up speed to rendezvous with the asteroid. After rendezvous of the cargo ship with the asteroid, any human presence needed would be sent by a small vehicle on a quick trajectory.

§ Specific asteroid missions

In the late 1970s, many people thought that the ideas of asteroidal materials utilization had so much merit that equipment would be developed and missions would be embarked upon by NASA. This was naive, but it was good that they proceeded with these projections, as they are exemplary. However, some of the dates of the following missions are already past.

The Amor asteroid "Anteros" (1973EC) was projected to have equipment launched to it in late 1992. Rendezvous would happen in 1993 and the equipment would be running at full steam by early 1994. After a delta-v of 1.6 km/sec, the cargo was to be enroute to the Earth-Moon system. It was to arrive in 1995 where two lunar gravity assists and a fuel thrust "capture maneuver" of 0.3 km/sec at orbit perigee would have put it into a circular orbit between the Moon and the Earth. (The 0.3 km/sec could be lowered by a third lunar encounter if so desired, but 0.3 km/sec is so small that it may be worth a little haste.)

The Amor asteroid "Eros" offered essentially the same story. The launch date was scheduled for a year later, in 1993. The delta-v would have been 1.7 km/sec and would've taken two lunar gravity assists and a capture maneuver of 0.3 km/sec.

The investigators thought that further analysis of mission opportunities and trajectories could reduce the delta-v to near 1 km/sec for the above two asteroids. On their shoestring budget, they did a limited number of calculations, and getting a trajectory under 2 km/sec initial delta-v was deemed enough to move onto other issues like analysis of the equipment needed.

In the late 1970s, a few of the newly discovered asteroids were also analyzed for rendezvous, e.g., the Apollo asteroids 1976UA (delta-v of 0.61 km/sec), 1973EC (delta-v of 1.43 km/sec) and 1977HB (delta-v of 1.06 km/sec). These calcuations were made using 1970s computers and some remarkably persistent professionals.

Since this 1970s study, using more sensitive telescopes, many more attractive targets have been found, including the asteroid 1982DB, which 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. > Transportation > Theoretical > Asteroid Missions


PERMANENT needs a PHP / MySQL (actually, MariaDB) programmer. Are you a PHP / MySQL programmer interested in getting into space development as a career, or already working in space development? Or do you know somebody else who might be interested?

There is an ongoing process to update this website in 2019 with a target relaunch in 2020.
This website is actually very out of date. Much of the website text content was written in the 1980s to early 2000s, but that's a different matter. As regards PHP / MySQL, some offline databases go into the 2010s, as regards professional publications, engineers, companies, etc., and this is what we need programming help with. We are updating our databases on people, organizations, publications, and other things, for open source space development for all.

The current status is we have some working databases which we have been using internally for a long time for organizing professional publications, and to track people (authors, R&D people, other professionals, quality volunteers, journalists, etc.) and organizations. We want to put information online for the general public pending a security review of the programming code.

Step 1 is fixing some bugs in what we already have, the PHP code. It is functional, and been used a long time, but there are some bugs.
Step 2 will be improving the system. Some small improvements would help its usability.
Step 3 will be a security check for putting it online for the general public to be able to access and use, but with reasonable protection against hackers.
After Step 3, the main mission is accomplished, as regards PHP / MySQL, though of course we hope to keep people engaged and happy, and the sky's not the limit.

This is a volunteer, unpaid role at this point in time. A limited paid role would be considered on a tight budget, such as for at least bug fixing with some minor improvements, and/or a security review of our code before it goes online publicly. If you or one of your friends or associates may be interested, please send an email to spaceprogrammer at ... of course this domain.

Reasons to do something yourself:

  • It will help save life on our special planet -- be part of the solution in your generation.
  • It will create and secure a better future for your children and grandchildren.
  • It could be an interesting, cool, and a fun adventure for your life!

You can join us and volunteer to help out,

... or ...

If you're short on time, you can just donate:

The Permanent Space Development Foundation, Inc., is a 501(c)(3) nonprofit organization.
If you would like to make a quick donation to our humanistic cause,
then please click on one of the buttons below (which go to PayPal).

... or by cryptocurrency (which is NOT tax deductible), you can donate into any of these wallets:





... or ...

Suggest this website to other people and organizations.

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If you are interested in hiring our expertise, anywhere in the world, please contact us.
We have people in the USA and Thailand, and can travel or consult by internet.
You can call anytime, 24/7, at +66-8-1135-7977

Text by Mark Prado, Copyright © 1983-2021, All Rights Reserved.
Many website artistic design elements by Sam Fraser, Copyright © 1999-2021, All Rights Reserved.

Except where specifically stated otherwise,
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