Episode 1 of 2
Postulation of Procyon's Companion
- When
- 1844
- Where
- Königsberg Observatory
Bessel postulated the existence of a dark companion for Procyon in 1844, based on similar proper motion irregularities.
Bessel observed deviations in Procyon's motion, attributing them to gravitational attraction from an unseen companion. Although orbital elements were calculated later, the existence was first postulated by Bessel in 1844.
Sources
- Procyon Wikipedia, revision of 2026-09-26
- Friedrich Wilhelm Bessel Wikipedia, revision of 2026-08-29
Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.