For some time now, the Space Track web site, which is the official source for satellite orbital elements, has been working on an upgrade to a REST interface. This interface is scheduled to go live on February 20.
My module Astro::SpaceTrack retrieves orbital data from the Space Track web site. To track this change, I intend shortly to release a new version of Astro::SpaceTrack which uses the REST interface by default. My understanding is that the old, screen-scraping interface will be available for an indefinite (but finite) time. For details, click on the post title for the extended version of the post.