This post is a collection of outer planet stelliums since 1900. A stellium is when 3 or more planets are conjunct within a few degrees. There are 4 stelliums listed below chronologically. Source:
starzpsychics.com
- 1941: Jupiter, Neptune, Pluto in Taurus
- 1968: Jupiter, Uranus, Pluto in Virgo/Libra
- 1989: Saturn, Uranus, Neptune in Capricorn
- 2020: Jupiter, Saturn, Pluto in Capricorn