{
  "key": "mission-pioneer",
  "name": "Pioneer 10 and 11 missions",
  "type": "spacecraft",
  "version": 1,
  "mingsversion": 3070301,
  "description": "This dataset contains the Pioneer 10 and 11 missions. The Pioneer program encompasses a series of NASA lunar and interplanetary probes launched between 1958 and 1978. Early missions (Pioneer 0–5, 1958–1960) attempted lunar orbiters and flybys, with Pioneer 4 becoming the first U.S. spacecraft to escape Earth's gravity. The interplanetary weather network (Pioneer 6–9, 1965–1969) deployed spin-stabilized probes in heliocentric orbits at 0.8–1.1 AU to study solar wind, cosmic rays, and magnetic fields. The outer Solar System missions, Pioneer 10 (launched March 2, 1972) and Pioneer 11 (launched April 5, 1973), were the first spacecraft to traverse the asteroid belt and conduct flybys of Jupiter; Pioneer 11 additionally performed the first Saturn flyby (1979). Both probes featured a 2.74-meter dish high-gain antenna, radioisotope thermoelectric generators (RTGs), and instruments including magnetometers, plasma analyzers, cosmic ray telescopes, photopolarimeters, and meteoroid detectors. Pioneer 10 ceased communications in 2003; Pioneer 11 in 1995. Both carry the Pioneer Plaque depicting human figures and Solar System location. The program concluded with the Pioneer Venus project (1978): the Orbiter (Pioneer 12) mapped Venus via radar for over a decade, while the Multiprobe (Pioneer 13) deployed one large and three small atmospheric probes to study Venusian atmospheric composition and dynamics.",
  "releasenotes": [
    "Initial data release."
  ],
  "creator": "Toni Sagrsità - tsagrista@ari.uni-heidelberg.de",
  "links": [
    "https://nasa.gov/humans-in-space/artemis/",
    "https://ssd.jpl.nasa.gov/horizons/"
  ],
  "credits": [
    "State vectors (trajectory): NASA Horizons system - https://ssd.jpl.nasa.gov/horizons/",
    "Gaia Sky orbit conversion: Toni Sagristà",
    "3D model source: NASA Eyes on the Solar System, public domain (CC-0)",
    "3D model adaptation for Gaia Sky and conversion to Wavefront: Toni Sagristà"
  ],
  "sizeBytes": 16663997,
  "nobjects": 4,
  "check": "$data/mission-pioneer/dataset.json",
  "files": [
    "$data/mission-pioneer"
  ],
  "data": [
    {
      "loader": "gaia.cu9.ari.gaiaorbit.data.JsonLoader",
      "files": [
        "$data/mission-pioneer/pioneer10.json",
        "$data/mission-pioneer/pioneer11.json"
      ]
    }
  ]
}