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Accurate planets prep: trails anchor on the body + exact obliquity - #834

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rulkens merged 5 commits into
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accurate-planets-prep
Oct 4, 2026
Merged

rulkens merged 5 commits into
mainfrom
accurate-planets-prep

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@rulkens

@rulkens rulkens commented Oct 4, 2026

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Prep for accurate planet positions (spec docs/superpowers/specs/2026-10-04-accurate-planet-positions-design.md, plan docs/superpowers/plans/2026-10-04-accurate-planet-positions.md).

  • P1 — orbit trails anchor on the snapshot body position. orbitTrailsPass stops re-folding the focus itself; the trail centre is derived from where the body actually is, so a body sits on its trail by construction. Behaviour-neutral.
  • P2 — exact J2000 obliquity (23.4392911° instead of 23.44°). A ~2.5″ frame tilt; fixture + camera golden traces re-recorded.

The feature PR (JPL-fitted correction series + Earth–Moon wobble) stacks on this branch.

🤖 Generated with Claude Code

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# Conflicts:
#	tests/fixtures/bodyStatesJ2000.json
@rulkens
rulkens merged commit e8846a5 into main Oct 4, 2026
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rulkens deleted the accurate-planets-prep branch October 4, 2026 22:52
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