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Research notes

updated 2026-10-18

Working notes, one topic per folder, grouped by kind of event: shared geometry and inputs, solar eclipses and transits, lunar eclipses, occultations and planetary satellites. Each note ends with what this changes for the pipeline design, saying so explicitly when the answer is nothing, and then the questions it could not close, naming the paper, dataset or line of code to obtain rather than the subject to think about further.

Synthesis lives in reports. These pages are allowed to contradict each other until it does.

In this section

Shared geometry and inputsThe Besselian geometry, Earth model, time scales, ephemerides, lunar figure and software that every eclipse, occultation and transit computation draws on.4 pages Solar eclipses and transitsEvents where the observer stands in a body's shadow and sees the Sun hidden: solar eclipses by the Moon, and transits of Mercury and Venus.8 pages Lunar eclipsesHow lunar eclipses are enumerated and classified, how the Earth's shadow is sized, how contacts and visibility maps are computed, and how predictions are validated.3 pages OccultationsEvents where a body blocks the observer's view of a star or planet: occultations by the Moon, and by planets, asteroids and trans-Neptunian objects.2 pages Planetary satellitesEclipses, occultations, transits, shadow transits and mutual events of the satellites of Jupiter, Saturn, Uranus and Pluto.2 pages