meteor-mcp
Copyright (C) 2026 Greg Beam, KI7MT and the qso-graph contributors

This program is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version. See LICENSE.

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SHOWER DATA

The meteor shower facts this package carries are read from the IAU Meteor Data
Center's list of established showers:

  IAU Meteor Data Center (IAU Commission F1, Meteors, Meteorites and
  Interplanetary Dust) — Established meteor showers, V.2.
  https://www.ta3.sk/IAUC22DB/MDC2022/Etc/streamestablisheddata2026.txt

The MDC database is maintained on an unpaid voluntary basis and asks to be
cited. Its requested references are:

  Jenniskens, P.; Jopek, T.J.; Janches, D.; Hajdukova, M.; Kokhirova,
  G.I.; Rudawska, R.; 2020, Planetary and Space Science, Vol. 182, article
  id. 104821

  Jopek, T.J.; Kanuchova, Z.; 2017, Planetary and Space Science, Vol. 143,
  p. 3-6

  Jopek, T.J.; Kanuchova, Z.; 2014, in The Meteoroids 2013, Proceedings of
  the Astronomical Conference, A.M. University Press, p. 353-364

  Jopek, T.J.; Jenniskens, P.M.; 2011, in Meteoroids: The Smallest Solar
  System Bodies, NASA/CP-2011-216469, p. 7-13

The authors' names carry diacritics that are preserved exactly in
src/meteor_mcp/data/SOURCE.json and in what meteor_source_info returns; they
are transliterated here only because this file is plain ASCII.

This package does not redistribute the MDC's file. It records the file's URL,
retrieval date and SHA-256, and holds the facts read from it. The shower
numbers, codes, names and radiants are the MDC's and are not claimed.

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LIVE SOURCES

  Global Meteor Network — https://globalmeteornetwork.org/
  Licensed CC BY 4.0. Attribution is a condition of the licence and is
  returned inside every answer that uses GMN data, not only here.

  NASA/JPL Center for Near-Earth Object Studies (CNEOS) —
  https://ssd-api.jpl.nasa.gov/fireball.api
  US government work. Credited by courtesy in every answer that uses it.

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ALGORITHMS

The solar-longitude series and the calendar arithmetic are from:

  Jean Meeus, "Astronomical Algorithms", 2nd edition, Willmann-Bell, 1998.
  Chapters 7 (Julian Day) and 25 (the Sun's position).

The implementation is ours and is covered by the licence above. The
mathematics is Meeus's and is not claimed.

The reflection geometry is standard meteor-scatter theory: a trail reflects
specularly where it is tangent to the ellipsoid having both stations as foci.
