{
  "all_pass": true,
  "kind": "direction_comparison_not_particle_orbit",
  "inputs": {
    "sun_to_comet": [
      1,
      0
    ],
    "ion_tail": [
      1,
      0
    ]
  },
  "checks": [
    {
      "motion_world_xy": [
        -85,
        -75
      ],
      "antisolar_world_xy": [
        1,
        0
      ],
      "tail_dot_motion": -85,
      "tail_dot_antisolar": 1
    },
    {
      "motion_world_xy": [
        85,
        75
      ],
      "antisolar_world_xy": [
        1,
        0
      ],
      "tail_dot_motion": 85,
      "tail_dot_antisolar": 1
    }
  ],
  "limits": [
    "illustrative dust curves",
    "two situations not consecutive precise orbit",
    "no observed tail or spectrum"
  ],
  "rendering_requirements": {
    "dust_paths": 2,
    "quadratic_control_and_endpoint_numbers": 4,
    "visual_confirmation_required": true
  }
}