Many thanks to everyone who attempted an observation. Most were clouded out unfortunately, except that I was fortunate to record the occultation during a convenient gap in the fast-moving clouds. Simon Kidd (Cottered) observed a miss event. Jesus Delgado (Spain) recorded an occultation of 58s duration. I used the Occult program to obtain this profile of Medea.
 Medea 20220121.png)
The ellipse is fitted to only two well-separated chords, so regard it as a simplified representation of Medea’s true shape. Simon’s line delimits the eastern edge of the shadow track and suggests he was close to obtaining a brief ‘blink’ occultation. The asteroid’s shadow path was ~55 km to the east of the predicted track.
If only we’d had better weather to obtain more chords across Medea.