411 REFERENCE · Wiktionary
Gabbard diagram
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
Developed by John Gabbard at NORAD.
Noun
en space A scatter plot on which the periapses and apoapses of the pieces of space debris from a single fragmentation event are plotted with respect to the pieces' orbital periods.
en eponyms