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STATUS

Recent Accomplishments

NOTE: This page is an archive of the running status updates published during Webb's build period through final integration and test at Northrop Grumman in California prior to being shipped to the ESA launch site in Kourou French Guiana.


View Status:

The tables below contain a record of program and project accomplishments. The list will be updated approximately every month. Date color coding and superscripts indicate the following:

Date Annotation Key
BLACK On Time as planned.
GREEN Ahead of Planned.
RED Later than Planned.
TAN ITALICS Replanned Milestones

( Related article on nasa.gov )
Webb Spacecraft

This image points out various major hardware components of the observatory referred to in the tables to orient the reader. Credit: STSci



Due Date Item Accomplished Completion Date
April 2021 No Planned Milestones  
March 2021 Complete Cycle 1 General Observer Proposal Reviews Completed 3/30/21
Sunshield Fold Complete 4/6/21
Launch Readiness Exercise #2 Completed 3/8/21
February 2021 Complete Comprehensive System Test #5 Completed 2/13/21
January 2021 Complete Post Environmental Testing Sunshield Deployments Completed 12/16/20
Due Date Item Accomplished Completion Date
December 2020 Complete Post Environmental Testing Spacecraft Bus Deployments Completed 11/12/20
November 2020 No Planned Milestones  
October 2020 Complete Observatory Environmental Testing 10/2/20
September 2020    
August 2020    
July 2020    
June 2020    
May 2020    
April 2020 Deliver Science and Operations Center release 2.1 04/30/20
March 2020 Replacement CTP & TWTA installed into Spacecraft 02/24/20
Conduct fourth early commissioning exercise 02/12/20
February 2020 Flight coupled loads analysis #2 delivered 02/28/2020
Command/Telemetry Processor (CTP) replacement delivered 01/13/2020
January 2020 Spacecraft Element level Sunshield post-environment folding complete 01/22/2020
Due Date Item Accomplished Completion Date
December 2019 Replacement tunable wave traveling amplifiers (TWTAs) delivered 11/22/19
November 2019 Data Management Subsystem build 7.4 delivered 11/25/19
Flight Software build 3.4 delivered 08/30/19
October 2019 Spacecraft Element level post-environment deployments complete 10/9/19
September 2019 Install Science Payload onto Spacecraft Element 8/23/19
Deliver the flight version of launch vehicle coupled loads analysis #2 and detailed assessment Replanned to follow science payload installation (FY 20)
Spacecraft Element integration complete 6/29/19
Conduct contingency planning rehearsal #3 at the MOC 9/27/19
August 2019 Complete Spacecraft Element post-launch environments and thermal vacuum testing folding Replanned to follow science payload installation (FY 20)
Observatory System Integration Review (Part 1) 7/25/19
Observatory System Integration Review (Part 2) 10/19
July 2019 Received updated Cycle 1 proposals from the Guaranteed Time Observers. 6/25/19
Conduct Science Operations rehearsal #5 at the MOC. 7/12/19
June 2019 Complete Spacecraft Element post-launch environmental testing deployment. Replanned to follow science payload installation.
Complete the secondary mirror structure deployment driven by the Spacecraft Element. 7/13/19
May 2019 No Milestones Planned for May.
April 2019 Open thermal vacuum chamber door following testing 5/19/19 (Feature Story)
Conduct Wavefront Sensing rehearsal #3 at the MOC 04/12/19
March 2019 Begin Spacecraft Element thermal vacuum test 4/7/19
Deliver the flight version of launch vehicle coupled loads analysis #2 Observatory Model 5/7/2019
February 2019 Deliver final results for SCE environmental testing 4/5/2019
Conduct Early Commissioning Exercise #2 at the MOC 03/06/19 (Government shutdown delay)
January 2019 Conduct a SCE Comprehensive System Test in preparation for thermal vacuum testing 09/26/18
Due Date Item Accomplished Completion Date
December 2018 Conduct Science Operations rehearsal #4 at the MOC 12/21/18
Begin Spacecraft Element vibration testing 11/15/18
Complete the validation of science payload software 10/27/18
November 2018 Complete Spacecraft Element Acoustic Test 10/28/18
Deliver Observatory Science and Operations software build 10/19/18
October 2018 Conduct Wavefront Sensing rehearsal #2 at the Missions Operations Center (MOC) 10/6/18
Stow the sunshield into launch position following repairs of the membrane covers 9/28/18
Spacecraft Element (SCE) ready for resumption of environmental testing following MCA repairs 10/19/18
September 2018 Complete integration of the Telescope onto the Spacecraft Element Replanned to 09/2019
August 2018 Complete Telescope delivery to Northrop Grumman Replanned to 08/2019
Conduct Integrated Team Exercise #1 Alternate milestone selected for 2019 ( * )
Cycle 1 General Observers proposal selection Replanned to 07/2019
Deliver Spacecraft Element to Observatory Integration and Test Alternate milestone selected for 2019 ( * )
July 2018 Complete Ground Segment test #2 7/25/18
Retension sunshield after thermal vacuum testing of the Spacecraft Element Replanned to 06/2019
Conduct Spacecraft Element Compliance Review, part 1 Alternate milestone selected for 2019 ( * )
Complete Johnson Space Center (JSC) Chamber A decommissioning 6/14/18
June 2018 Launch Readiness Exercise #1 Alternate milestone selected for 2019 ( * )
Deliver final version of the spacecraft handbook to NASA 5/9/18
May 2018 Begin Spacecraft Element thermal vacuum test Replanned to 04/2019
Deliver analysis of launch effects on JWST Observatory Replanned to 03/2019
April 2018 Deliver results from Spacecraft Element acoustic and vibration tests Replanned to 02/2019
Complete post shipment functional testing of the Telescope Replanned to 01/2019
March 2018 Complete Spacecraft Element vibration test Replanned to 11/2018
Spacecraft thrusters modules ready for installation 2/19/18
Ship telescope from NASA/JSC to Northrop Grumman 2/2/18
February 2018 Complete Spacecraft Element (combined spacecraft and sunshield) Acoustic Test Started 3/25/2018
Conduct Observatory Deployment Review #3 1/31/18
January 2018 Complete Wavefront Sensing & Control commissioning exercise 3/10/2018
Install spacecraft horizontal radiator panels 1/3/18