Launch Thread - Ariane 5: James Webb Space Telescope 'JWST'

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Launch Time: December 25, 2021 07:20 AM EST / 2021-12-25 12:20 UTC
Track JWST with ‘where is Webb’:

Launch Site: ELA-3 launch complex, Guiana Space Center, Kourou, French Guiana
Launch Vehicle: ESA’s Ariane 5 ECA
>This is the 112th launch of Ariane 5. There have been two failures and three partial failures across all Ariane 5 variants.

Webb info smorgasbord:
Homepage: &
Media kit:
Pocket guide:
YouTube channel:
Mission duration: Minimum 5.5 years, optimistically >10 years; Webb will become operational in 6 months
Orbit and mass: L2 (1.5 million km); 6,500 kg
Optical Resolution with 6.6 meter primary mirror: 0.07 arc-seconds, diffraction-limited at 2-micrometer wavelengths (0.0317 arc-second pixels)
Wavelengths Webb can detect are in the range of 0.6-28.5 micrometers
Rough total cost of the program: $10 billion. Webb has been in development for 25 years.
>The NASA Goddard Space Flight Center is managing the development effort. The main industrial partner is Northrop Grumman; the Space Telescope Science Institute will operate Webb after launch.
First science observations will be from
Principle areas of science Webb will investigate: First Light and Reionization; The Assembly of Galaxies; The Birth of Stars and Protoplanetary Systems; and Planetary Systems and the Origin of Life