{
  "document": "MINESPACE_MISSION_ZERO_COMPANION_OBJECTIVE",
  "revision": "0.1 public concept",
  "company": "MineSpace Inc.",
  "mission": "Mission Zero / Apophis",
  "objective": "Autonomously reach Apophis, match its heliocentric motion and maintain a controlled companion stand-off for the longest feasible duration. Indefinite operation is a mission ambition, not a guaranteed design lifetime.",
  "physical_interpretation": "Companion heliocentric formation, not guaranteed permanent gravitational orbit about Apophis or a stationary point in a rotating body frame.",
  "events": [
    "Target state acquisition",
    "Interplanetary transfer and navigation",
    "Relative rendezvous / velocity match",
    "Safe stand-off acquisition",
    "Earth encounter and orbit-state update, if flight design spans 2029",
    "Companion stationkeeping and observation",
    "Resource-driven replan / safe retreat / end-of-life"
  ],
  "required_evidence": {
    "astrodynamics": [
      "Validated transfer solution",
      "Multi-body integrated Apophis ephemeris covering 2029",
      "Covariance / navigation updates",
      "Relative drift and collision risk",
      "Propulsive lifetime under uncertainty"
    ],
    "autonomy": [
      "Fault-tolerant state estimation",
      "Closed-loop formation controller verification",
      "Safe approach and retreat logic",
      "No-link safe-mode behavior",
      "Thruster and sensor-failure contingency"
    ],
    "systems": [
      "Mass / propulsion / power / thermal lifetime",
      "Redundant navigation and communication strategy",
      "Degradation and end-of-life decisions",
      "Ground segment and mission operations concept"
    ]
  },
  "public_demonstrator_disclosure": "Interactive browser images, timelines, spacecraft depiction, a sample 2 km stand-off, and low-order relative controller readouts are illustrative; none independently verify a launch, flight trajectory, propulsion budget or sustained real flight.",
  "sources": [
    "https://science.nasa.gov/solar-system/asteroids/apophis-facts/",
    "https://ssd-api.jpl.nasa.gov/doc/cad.html",
    "https://echo.jpl.nasa.gov/asteroids/apophis.2029.goldstone.planning.html"
  ],
  "cinematic_release": "CURRENT",
  "presentation_note": "Camera views, orbit inset and controller display are illustrative, not flight-validated mission navigation.",
  "formation_geometry": {
    "objective": "Maintain a controlled three-dimensional companion position offset above or below Apophis's local orbital plane when that geometry improves solar exposure, Earth-link availability, science viewing, and collision clearance.",
    "optimization": [
      "solar array illumination",
      "Earth communications availability",
      "science geometry",
      "collision avoidance and keep-out zones",
      "thermal environment",
      "stationkeeping propellant"
    ],
    "constraint": "Plane-normal offset improves geometry but does not guarantee continuous sunlight or continuous Earth contact; solar conjunction and changing heliocentric geometry require autonomous outage survival."
  }
}