{
  "resourceType" : "CodeSystem",
  "id" : "mars-landing-sites-cs",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: CodeSystem mars-landing-sites-cs</b></p><a name=\"mars-landing-sites-cs\"> </a><a name=\"hcmars-landing-sites-cs\"> </a><p><b>Properties</b></p><p><b>This code system defines the following properties for its concepts</b></p><table class=\"grid\"><tr><td><b>Name</b></td><td><b>Code</b></td><td><b>URI</b></td><td><b>Type</b></td><td><b>Description</b></td></tr><tr><td>latitude</td><td>latitude</td><td>http://hl7.org/fhir/uv/aerospace/CodeSystem/mars-landing-sites-cs#latitude</td><td>decimal</td><td>Areographic latitude (degrees, -90 to +90)</td></tr><tr><td>longitude</td><td>longitude</td><td>http://hl7.org/fhir/uv/aerospace/CodeSystem/mars-landing-sites-cs#longitude</td><td>decimal</td><td>Areographic longitude (degrees, 0 to 360)</td></tr><tr><td>feature</td><td>feature</td><td>http://hl7.org/fhir/uv/aerospace/CodeSystem/mars-landing-sites-cs#feature</td><td>string</td><td>Primary topographic feature</td></tr></table><p><b>Concepts</b></p><p>This case-sensitive code system <code>http://hl7.org/fhir/uv/aerospace/CodeSystem/mars-landing-sites-cs</code> defines the following codes:</p><table class=\"codes\"><tr><td style=\"white-space:nowrap\"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td><td><b>latitude</b></td><td><b>longitude</b></td><td><b>feature</b></td></tr><tr><td style=\"white-space:nowrap\">jezero<a name=\"mars-landing-sites-cs-jezero\"> </a></td><td>Jezero Crater</td><td>Ancient lake-delta system at 18.4°N, 77.5°E, Perseverance rover site, high science value for sample return</td><td>18.4</td><td>77.5</td><td>Impact crater with river delta deposits</td></tr><tr><td style=\"white-space:nowrap\">arcadia<a name=\"mars-landing-sites-cs-arcadia\"> </a></td><td>Arcadia Planitia</td><td>Flat plain ~40°N, 203°E with subsurface ice, candidate SpaceX Starship zone for ISRU water access</td><td>40</td><td>203</td><td>Smooth lowland plain</td></tr><tr><td style=\"white-space:nowrap\">gale<a name=\"mars-landing-sites-cs-gale\"> </a></td><td>Gale Crater</td><td>Large crater at 5.4°S, 137.8°E with layered central mound (Mt. Sharp), Curiosity rover site</td><td>-5.4</td><td>137.8</td><td>Impact crater with central peak</td></tr><tr><td style=\"white-space:nowrap\">elysium<a name=\"mars-landing-sites-cs-elysium\"> </a></td><td>Elysium Planitia</td><td>Smooth equatorial plain at 4°N, 135°E, benign terrain, InSight lander site</td><td>4</td><td>135</td><td>Volcanic plain</td></tr><tr><td style=\"white-space:nowrap\">hellas<a name=\"mars-landing-sites-cs-hellas\"> </a></td><td>Hellas Planitia</td><td>Deepest basin on Mars at 42.4°S, 70.5°E (~7 km below datum), higher atmospheric pressure aids landing</td><td>-42.4</td><td>70.5</td><td>Massive impact basin</td></tr><tr><td style=\"white-space:nowrap\">mawrth<a name=\"mars-landing-sites-cs-mawrth\"> </a></td><td>Mawrth Vallis</td><td>Ancient river valley at 24°N, 341°E with phyllosilicate (clay) deposits, high habitability science interest</td><td>24</td><td>341</td><td>Outflow channel</td></tr></table></div>"
  },
  "url" : "http://hl7.org/fhir/uv/aerospace/CodeSystem/mars-landing-sites-cs",
  "version" : "0.5.12",
  "name" : "MarsLandingSitesCS",
  "title" : "Mars Landing Sites (Candidate)",
  "status" : "active",
  "experimental" : false,
  "date" : "2026-03-25T00:24:16-05:00",
  "publisher" : "MITRE",
  "contact" : [{
    "name" : "MITRE",
    "telecom" : [{
      "system" : "url",
      "value" : "https://www.mitre.org/"
    }]
  }],
  "description" : "Candidate landing sites for human Mars missions with are\n\nographic coordinates and site characteristics",
  "caseSensitive" : true,
  "content" : "complete",
  "count" : 6,
  "property" : [{
    "code" : "latitude",
    "uri" : "http://hl7.org/fhir/uv/aerospace/CodeSystem/mars-landing-sites-cs#latitude",
    "description" : "Areographic latitude (degrees, -90 to +90)",
    "type" : "decimal"
  },
  {
    "code" : "longitude",
    "uri" : "http://hl7.org/fhir/uv/aerospace/CodeSystem/mars-landing-sites-cs#longitude",
    "description" : "Areographic longitude (degrees, 0 to 360)",
    "type" : "decimal"
  },
  {
    "code" : "feature",
    "uri" : "http://hl7.org/fhir/uv/aerospace/CodeSystem/mars-landing-sites-cs#feature",
    "description" : "Primary topographic feature",
    "type" : "string"
  }],
  "concept" : [{
    "code" : "jezero",
    "display" : "Jezero Crater",
    "definition" : "Ancient lake-delta system at 18.4°N, 77.5°E, Perseverance rover site, high science value for sample return",
    "property" : [{
      "code" : "latitude",
      "valueDecimal" : 18.4
    },
    {
      "code" : "longitude",
      "valueDecimal" : 77.5
    },
    {
      "code" : "feature",
      "valueString" : "Impact crater with river delta deposits"
    }]
  },
  {
    "code" : "arcadia",
    "display" : "Arcadia Planitia",
    "definition" : "Flat plain ~40°N, 203°E with subsurface ice, candidate SpaceX Starship zone for ISRU water access",
    "property" : [{
      "code" : "latitude",
      "valueDecimal" : 40
    },
    {
      "code" : "longitude",
      "valueDecimal" : 203
    },
    {
      "code" : "feature",
      "valueString" : "Smooth lowland plain"
    }]
  },
  {
    "code" : "gale",
    "display" : "Gale Crater",
    "definition" : "Large crater at 5.4°S, 137.8°E with layered central mound (Mt. Sharp), Curiosity rover site",
    "property" : [{
      "code" : "latitude",
      "valueDecimal" : -5.4
    },
    {
      "code" : "longitude",
      "valueDecimal" : 137.8
    },
    {
      "code" : "feature",
      "valueString" : "Impact crater with central peak"
    }]
  },
  {
    "code" : "elysium",
    "display" : "Elysium Planitia",
    "definition" : "Smooth equatorial plain at 4°N, 135°E, benign terrain, InSight lander site",
    "property" : [{
      "code" : "latitude",
      "valueDecimal" : 4
    },
    {
      "code" : "longitude",
      "valueDecimal" : 135
    },
    {
      "code" : "feature",
      "valueString" : "Volcanic plain"
    }]
  },
  {
    "code" : "hellas",
    "display" : "Hellas Planitia",
    "definition" : "Deepest basin on Mars at 42.4°S, 70.5°E (~7 km below datum), higher atmospheric pressure aids landing",
    "property" : [{
      "code" : "latitude",
      "valueDecimal" : -42.4
    },
    {
      "code" : "longitude",
      "valueDecimal" : 70.5
    },
    {
      "code" : "feature",
      "valueString" : "Massive impact basin"
    }]
  },
  {
    "code" : "mawrth",
    "display" : "Mawrth Vallis",
    "definition" : "Ancient river valley at 24°N, 341°E with phyllosilicate (clay) deposits, high habitability science interest",
    "property" : [{
      "code" : "latitude",
      "valueDecimal" : 24
    },
    {
      "code" : "longitude",
      "valueDecimal" : 341
    },
    {
      "code" : "feature",
      "valueString" : "Outflow channel"
    }]
  }]
}