🌟 A stellium forms when 3 or more of the tracked planets (Sun, Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto — Moon excluded) are all within mutual conjunction orb of each other at the same time. Any planet joining, leaving, or the cluster splitting/merging starts a new episode.
3
☉♂♇3-planet stellium
Surya, Mangala, Pluto
Formed Jun 18, 1921 · 21:12:58 EDT
Broke up Jul 2, 1921 · 21:34:06 EDT
4
☉☿♂♇4-planet stellium⭐ largest this window
Surya, Budha, Mangala, Pluto
Formed Jul 2, 1921 · 21:34:06 EDT
Broke up Jul 17, 1921 · 17:34:28 EDT
Computed for Columbus, Ohio, America (United States) — exact-instant orb events (jd_utc), MariaDB-backed, 1900–2500.