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

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 Revised: Apr 26, 2024     James Webb Space Telescope / (E-S L2)           -170
                           https://www.jwst.nasa.gov/index.html
                        https://www.youtube.com/watch?v=bTxLAGchWnA

 The James Webb Space Telescope ("JWST" or "Webb") is a space-based infrared 
 observatory and NASA's successor to the Hubble Space Telescope. 

 Launched by Ariane 5 booster on 2021-Dec-25 @ 12:20 UTC from the ELA-3 
 launch complex near Korou, French Guiana. 

 After launch, the telescope will deploy during its 30-day, 1.5 million km 
 journey to halo orbit at the second Earth-Sun Lagrange point (E-S L2). 
 Mission duration is nominally 5-10 years.

 GOALS
  - Search for the first galaxies or luminous objects formed after the Big Bang
  - Determine how galaxies evolved from their formation until now
  - Observe the formation of stars from the first stages to the formation of 
     planetary systems
  - Measure the physical and chemical properties of planetary systems, 
     including our own Solar System, investigating the potential for life 
     in those systems.

 TELESCOPE
  * total launch mass : ~6200 kg (observatory, fuel, launch adaptor)
  * primary mirror    : 25 m^2 
             mass     : 705 kg
         material     : beryllium coated w/48.25 grams gold (golf-ball size)
      segment mass    : 20.1 kg, 39.48 kg for entire segment assembly
      No. of segments : 18
  * focal length      : 131.4 meters
  * optical resolution: 0.1 arcseconds
  * wavelength        : 0.6 - 28.5 microns
  * size of sun shield: 21.197 m x 14.162 m
  * Sun shield layers : 1: Max temp 283K, 231 deg. F.
                        5: Max temp 221K,  -80 F 
                           Min temp 36K,  -394 F 
  * Operating temp    : < 50K (-370 deg. F)

 INSTRUMENTS
  - Near Infrared Camera (NIRCam)
  - Near Infrared Spectrograph (NIRSpec)
  - Mid Infrared Instrument (MIRI)
  - Fine Guidance Sensors/Near Infrared Imager & Slitless Spectrograph 
     (FGS/NIRISS)

 TRAJECTORY
 MCC1A (65-minute engine burn) began 2021-Dec-26 12:50 UTC, completed 01:55 UTC.
 MCC1B (09:27 engine burn) began 2021-Dec-28 00:20 UTC, completed 00:29:27 UTC.
 MCC2  (04:57 engine burn) began 2022-Jan-24 19:00 UTC, completed 19:04:57 UTC.

 Concatenation of reconstructed trajectory solutions (as-flown) from Goddard 
 Flight Dynamics Facility (FDF), based on tracking data through April 21, 
 with prediction thereafter. 

 Trajectory files                             Start (TDB)         End (TDB) 
 ----------------------------------------  -----------------  -----------------
 DEFINITIVE_EPHEMERIS_202135913-2024105    2021-Dec-25 13:01  2024-Apr-22 00:01
 28D_BURN_PREDICT_SK_2024113000000_03U     2024-Apr-22 00:01  2024-May-20 00:01
 5Y_SCHEDULE_2024113000000_03U.V0.1        2024-May-20 00:01  2029-Apr-21 23:59
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