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

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 Revised: Jun 11, 2025      Nancy Grace Roman Space Telescope              -211
                  https://science.nasa.gov/mission/roman-space-telescope/
                               https://roman.gsfc.nasa.gov/
 
 BACKGROUND:
  The Nancy Grace Roman Space Telescope is a next-generation observatory 
  due for nominal launch in October of 2026, but no later than May 2027. 
  The mission lifetime is at least five years. It can be refueled in-flight 
  robotically.

  It is to be launched on a Falcon Heavy from Kennedy Space Center and 
  orbit the Earth-Sun L2.

  Objectives:
   * Search for extra-solar planets using gravitational microlensing
   * Probe chronology of the universe and growth of cosmic structure
   * Measure effects of dark energy, consistency of general relativity 
      and the curvature of spacetime
   * Detection of primordial black holes
 
 Roman Space Telescope:
   * Primary mirror size: 2.4 m
   * Primary mirror effective diameter: 2.36 m (aperture stop diameter)
   * Operating temperature: 298 K
   * Spacecraft bus 
       Downlink rate: 250-500 Mbps
       Data volume  : 11 Tbits/day

  Instruments:
   * Wide Field Instrument (WFI)
      300.8-megapixel camera providing multiband visible to near-infrared 
      (0.48 to 2.30-um imaging using one wideband and six narrowband filters.
   * Coronagraph Instrument
      High contrast covering wavelengths (575 nm to 825 nm) w/dual deformable 
      mirror starlight-suppression technology, enabling detection and 
      spectroscopy of planets with visual separation greater than 0.15 
      arcseconds from host stars
 
 SPACECRAFT TRAJECTORY:
   Pre-launch planning trajectory created by the flight project 2024-May-8.
   Trajectory assumes launch 2026-Oct-30.

 Trajectory files                             Start (TDB)         End (TDB) 
 ----------------------------------------  -----------------  -----------------
 RST_103026                                2026-Oct-30 07:07  2032-Jan-28 21:04
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No ephemeris for target "Roman Space Telescope (spacecraft)" prior to A.D. 2026-OCT-30 07:04:15.8820 UT