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Perigee 1.15.0
Added
- Dwarf planet candidates in the solar system view. Tick Show the dwarf planet candidates to draw and list, largest first:
- Gonggong, Quaoar, Orcus and Sedna, the large bodies beyond Neptune that planetologists usually count as dwarf planets;
- 2026 ED138, the first dwarf planet candidate found by the Vera C. Rubin Observatory, announced on 27 October 2026.
- Positions come from JPL Horizons. The five dwarf planets recognised by the IAU (Pluto, Ceres, Haumea, Makemake, Eris) stay with the planets.
- A dwarf planet's info panel now says:
- whether the IAU recognises it;
- its size and how it was measured: by a spacecraft, stellar occultations, its heat glow, or its brightness only (ED138: about 1,000 km, between 600 and 1,500 km);
- its discovery and its moons (Dysnomia, Hiʻiaka and Namaka, MK2, Weywot, Vanth, Xiangliu).
- Images: Hubble images of Gonggong, Quaoar, Orcus and Sedna, and Rubin's discovery images of 2026 ED138. These bodies were never imaged in detail, so the panel shows these images rather than a plain sphere.
- Glossary: a "dwarf planet" entry.
- Links:
candidates=1draws them,sel=quaoarorsel=2026-ed138selects one.
Changed
- The solar panel's boxes now come in this order: dwarf planet candidates, comets, asteroids, stars within 20 light-years, bright stars.
- Telescope views (ESO VLT images of the large asteroids, Hubble and Gemini images of two comets) are labelled "Telescope image" instead of "Image taken by the spacecraft".
Maintenance
- The dwarf planets are refreshed from JPL Horizons once a week, like the asteroids.
AI assistants: perigee-mcp 1.9.0 finds the dwarf planets and candidates by name (eris, quaoar, 2026-ed138); perigee_object gives their size, how it was measured, discovery and moons, and perigee_describe_view reads candidates=1.
Educational use only — not intended for navigation or conjunction assessment.