╔═══════════════════╦═════════════════════════╦═════════════════════════╦══════════╗ ║ Encounter date ║ Target ║ Diameter ║ Altitude ║ ╠═══════════════════╬═════════════════════════╬═════════════════════════╬══════════╣ ║ 16 October 2022 ║ Earth (gravity assist) ║ 12742 km ║ 300 km ║ ╠═══════════════════╬═════════════════════════╬═════════════════════════╬══════════╣ ║ 1 November 2023 ║ 152830 Dinkinesh ║ 0.7 km ║ 450 km ║ ╠═══════════════════╬═════════════════════════╬═════════════════════════╬══════════╣ ║ 13 December 2024 ║ Earth (gravity assist) ║ 12742 km ║ 350 km ║ ╠═══════════════════╬═════════════════════════╬═════════════════════════╬══════════╣ ║ 20 April 2025 ║ 52246 Donaldjohanson ║ 4 km ║ 922 km ║ ╠═══════════════════╬═════════════════════════╬═════════════════════════╬══════════╣ ║ 12 August 2027 ║ 3548 Eurybates ║ Eurybates: 64 km ║ 1000 km ║ ║ ║ ║ (Queta satellite: 1 km) ║ ║ ╠═══════════════════╬═════════════════════════╬═════════════════════════╬══════════╣ ║ 15 September 2027 ║ 15094 Polymele ║ Polymele: 21 km ║ 415 km ║ ║ ║ ║ (Satellite: 5 km) ║ ║ ╠═══════════════════╬═════════════════════════╬═════════════════════════╬══════════╣ ║ 18 April 2028 ║ 11351 Leucus ║ 34 km ║ 1000 km ║ ╠═══════════════════╬═════════════════════════╬═════════════════════════╬══════════╣ ║ 11 November 2028 ║ 21900 Orus ║ 51 km ║ 1000 km ║ ╠═══════════════════╬═════════════════════════╬═════════════════════════╬══════════╣ ║ 26 December 2030 ║ Earth (gravity assist) ║ 12742 km ║ 660 km ║ ╠═══════════════════╬═════════════════════════╬═════════════════════════╬══════════╣ ║ 2 March 2033 ║ 617 Patroclus–Menoetius ║ Patroclus: 113 km ║ 1000 km ║ ║ ║ ║ Menoetius: 104 km ║ ║ ╚═══════════════════╩═════════════════════════╩═════════════════════════╩══════════╝
Also, Polymele's satellite was discovered only after the Lucy spacecraft launched. That situation has already happened before with New Horizons and Pluto; Kerberos and Styx were discovered using the Hubble Space Telescope after New Horizons launched. Saturn's moons Helene, Calypso, and Telesto were discovered by ground-based observatories just months before the Voyager 1 flyby in 1980.
Following observations of an occultation on 26 March 2022, the Lucy mission team reported the discovery of a satellite around Polymele. The satellite is a smaller asteroid about 5–6 kilometers (3.1–3.7 miles) in diameter, orbiting nearly in the equatorial plane of Polymele at a distance of 204 km (127 mi). It will not be assigned a formal name until further observations determine its orbit. The Lucy team refers to the companion by the temporary informal name "Shaun," after Aardman Animations' animated sheep.
Lucy Mission Targets
I saw Polymele in the latest list of JWST targets. I checked that, found it was the target of a Lucy spacecraft flyby on September 15, 2027, and also found that a new asteroid has been added early in Lucy's itinerary, 152830 Dinkinesh.
https://www.tablesgenerator.com/text_tables
Also, Polymele's satellite was discovered only after the Lucy spacecraft launched. That situation has already happened before with New Horizons and Pluto; Kerberos and Styx were discovered using the Hubble Space Telescope after New Horizons launched. Saturn's moons Helene, Calypso, and Telesto were discovered by ground-based observatories just months before the Voyager 1 flyby in 1980.