API VERSION: 1.2
API SOURCE: NASA/JPL Horizons API

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 Revised: Sep 30, 2026         IMAP Spacecraft / (Earth)                   -43
                              https://imap.princeton.edu/

 BACKGROUND:
  The "Interstellar Mapping and Acceleration Probe" (IMAP) will study the
  energization of charged particles and interaction of the solar wind with
  that of other stars and material in our galaxy. IMAP is the fifth mission 
  in NASA's Solar Terrestrial Probes (STP) Program. 

  It was launched Sep. 24, 2025 @ 11:30 UTC from Launch Complex 39A (LC-39A) 
  at Kennedy Space Center, USA, on a Falcon 9 booster.

  From a halo-orbit at the Earth-Sun L1 Lagrange Point, ~1.6 million km
  closer to the Sun than Earth and free from planetary magnetic influences,
  IMAP will spin once every 15 seconds while using 10 instruments to scan 
  the heliosphere.

 SCIENCE GOALS
  * What elements make up the interstellar gas and dust (indication of origin)
  * How does the solar wind and interstellar medium interact through the 
     boundaries of our heliosphere?
  * What causes some solar particles to get accelerated to nearly the speed 
     of light, making them dangerous to satellites and astronauts, and how 
     can it be predicted when these particles will occur?

 SPACECRAFT PHYSICAL CHARACTERISTICS:
  Dry mass         : ~800 kg
  Launch mass      : ~900 kg
  Dimensions       : cylindrical, 3-m diameter, 1.5-m height. 2.5-m boom
  Solar arrays     : 500 Watts, sun-facing
  Spin             : 4 rpm
  Communications   : X-band, 375-500 kilobits/s down, 2 kbps up. 
  Propulsion       : 12 thrusters, three hydrazine tanks
  Launch vehicle   : Space-X Falcon-9 from Kennedy Space Center 

 SPACECRAFT TRAJECTORY: 
  Post-launch merged trajectory. Tracking data through September 28, 2026.
  Predicted trajectory thereafter.

  Trajectory name                               Start             Stop
  ----------------------------------------- ----------------- -----------------
  Merged segments                           2025-Sep-24 13:02 2026-Jul-20 00:01
  imap_pred_od044_20260928_20261109_v01     2026-Jul-20 00:01 2026-Nov-09 00:00 
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Input ELEV_CUT must be between -90.0 <= e <= 90.0 degrees -- try again