Task 152: EP04 On-Screen Data Cross-Reference with Analysis

Status: DONE

Motivation

Task 151 extracted on-screen data from EP04 video frames. Cross-reference the

plasmoid zone parameters (180-340 nT, 0.8-2.3 cm⁻³, 2.1×10⁶ K) with existing

plasmoid analysis in Rust crate and EP04 report. Verify orbital parameters

(6.50 RU periapsis, 18.3 km/s) against vis-viva calculations.

Key Findings

Plasmoid Magnetic Field: On-Screen >> Rust Scenarios

• On-screen: 180-340 nT
• Rust extreme scenario: 50 nT (based on Voyager 2)
• Ratio: 3.6-6.8x higher than even the extreme case
• Conclusion: The show's plasmoid is much stronger than Voyager 2 data suggests,

but the core conclusion (negligible momentum perturbation on 48,000t ship) is unchanged

Density and Temperature: Consistent

• Density 0.8-2.3 cm⁻³ falls within Rust enhanced-extreme range
• Core temperature 2.1×10⁶ K matches solar corona level
• Proton thermal velocity 228 km/s >> ship velocity 18.3 km/s

New Orbital Parameters (screen-only)

• Periapsis altitude: 6.50 RU (between Miranda and Ariel orbits)
• Intercept velocity: 18.3 km/s (below Uranus escape velocity, capture possible)
• Inclination: 2.1° (nearly equatorial — good for Titania approach)

Burns Timeline Discrepancy Resolved

• Screen (02:38): 1-2 burns maximum (pre-plasmoid, pessimistic)
• Dialogue (17:16): 3-4 burns (post-Titania repair, improved)
• Shield 63% = cooling 63% suggests coupled degradation

Changes Made

• Created reports/data/calculations/ep04_onscreen_crossref.json
• Added onScreenDataExploration (ep04-exploration-04) to EP04 report
• Updated Task 152 status to DONE

Dependencies

• Task 151 (EP04 on-screen data) — DONE
• Task 020 (EP04 analysis) — DONE