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

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 Revised: Jun, 03 2026     Emirates Mars Mission (EMM, HOPE Probe)          -62
                         https://www.mbrsc.ae/emirates-mars-mission 
                              https://www.emiratesmarsmission.ae

 LAUNCH DATE:                                               MARS ARRIVAL DATE:
 2020-July-19 21:58:14 UTC (in flight)                      February 9, 2021 
                                                              @ 15:54:46 UTC

 Launch window extends to 2020-Aug-13. A Type 1 transfer trajectory will be
 used, so 211 days from opening of window regardless of actual launch date
 (fixed arrival date).

 LAUNCH VEHICLE:
  This mission, built by the United Arab Emirates, will launch on a 
  Mitsubishi H-2A-202 launch vehicle from Tanegashima, Japan.

 BACKGROUND:
  This mission will orbit Mars to study the dynamics of the martian atmosphere
  and its interaction with space and solar wind. Primary scientific objectives: 

   * Search for the connection between current martian weather and the 
      ancient climate of Mars
   * Study the loss mechanisms of Mars' atmosphere to space by tracking the  
      behavior and escape of hydrogen and oxygen
   * Investigate how the lower and upper levels of the martian atmosphere 
      are connected
   * Create a global picture of how the martian atmosphere varies throughout 
      the day and year

  After a 211 day transfer to Mars, Hope will enter an elliptical, roughly 
  22000 x 44000 km orbit with a period of 55 hours, 25 degree inclination,
  and periapse near the equator. 

  Two years of science operations are planned, beginning in May 2021, with 
  the possibility of a two-year extension into 2025.

 ROLES: 
  Mission Ops Canter (MOC): Mohammed Bin Rashid Space Centre (MBRSC), Dubai
  Ground Station Communication Network: DSN/JPL
  Mission Design: Advanced Space (Boulder, CO)
  Navigation: KinetX (Tempe, AZ)
  Mission Support Facility (MSF, backup MOC & Nav systems): 
    Laboratory for Atmospheric and Space Physics (LASP), 
    University of Colorado (Boulder, CO)

 SCIENCE INSTRUMENTS:
  * Emirates eXploration Imager (EXI, visible and UV wavelength camera)
  * Emirates Mars Ultraviolet Spectrometer (EMUS, far-UV imaging spectrograph)
  * Emirates Mars Infrared Spectrometer (EMIRS, a FTIR scanning spectrometer)

 SPACECRAFT PHYSICAL PROPERTIES:
  Bus: A hexagonal shape, 2.37 x 2.90 meters, honeycombed aluminum panels
  3 x 7.9 m with solar panels extended
  
  Total launch mass: 1350 kg (includes fuel)
  Propulsion       : 4-6 120-N thrusters on bottom of s/c (monopropellant 
                      hydrazine and GHe pressurant tank)
                     Maneuvering and attitude control w/8-12 5-N reaction
                      control thrusters and a set of reaction wheels
  Power system     : 3 solar panel wings fixed to top platform
                     600 W (in Martian orbit), 477 required
  Orientation      : Star trackers and coarse Sun sensors
  Communications   : One directional 1.5-m high-gain (HGA),
                     three low-gain antennas

 SPACECRAFT TRAJECTORY 
  Post-launch/separation tag-up fit prediction to tracking data through 
  2026-May-28, with predicted trajectory thereafter:

  Name                                           Start (TDB)      Stop (TDB)
  ------------------------------------------ ----------------- -----------------
  EMM_20200719-20261126_od03-195             2020-Jul-19 23:07 2026-Nov-26 00:00
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