Subject: JWST's Earth-Centered Deployment Trajectory

From: Daniel Adamo <[email-masked]>
Date: Wed, 02 Feb 2022 15:11:50 -0800

ATIG Members-

The attached PDF file is an update to JWST's trajectory reflecting its insertion into the Lagrange point halo orbit from which it will observe the infra-red universe.  As of early February, science instruments are in their final cool-down phase and optical elements are undergoing alignment.  Science operations are expected to begin in mid-2022.

-Dan

From: Daniel Adamo <[email-masked]>
Date: Saturday, December 25, 2021 at 10:55
Subject: JWST's Earth-Centered Deployment Trajectory

ATIG Members-

Following an on-time launch at 12:20 PM UT on Christmas Day, the James Webb Space Telescope (JWST) is undergoing successful initial deployment activities.  Further critical deployment milestones are planned over the coming weeks (ref. https://www.floridatoday.com/story/tech/science/space/2021/12/25/nasas-james-webb-telescope-launches-kicking-off-nail-biting-mission/9006733002/).  This on-time launch renders reasonably valid a planned trajectory for JWST's first month in space as posted to JPL's Horizons server on 23 December 2021.  The attached JPEG graphic plots Earth-centered motion of JWST, together with that of the Moon, during the month following launch.

Happy and healthy holidays to all!

-Dan

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From: Daniel Adamo <[email-masked]>
Date: Sat, 25 Dec 2021 10:56:52 -0800

ATIG Members-

-Dan