It's interesting how the staff at Newtype started making stuff up when it came to Gaia Gear (which they say was super popular at the time), including the little diddy about it being "100 years after Gundam." Tomino would go on to dispel that claim...
#Gundam #ガンダム ...saying that there was no mention of such things in his writings. NT staff initially pegged it as taking place in the U.C.0180s, but interestingly enough, they included a timeline snippet in their own magazine in '93 as part of their "We Want Next Gundam" article.