Welcome to TESS Asteroseismic Science Operations Center

The TESS Asteroseismic Science Operations Center (TASOC) provides asteroseismological data from the NASA TESS mission to astronomers who are members of the TESS Asteroseismic Science Consortium (TASC). It is also the platform used to facilitate the international collaborations within TASC.

If you are a member of TASC, please log in below...

In order to have access to TASOC you have to be a member of TASC. Please see the "New TASC member" page on how to become a member.


23rd Apr 2018: Scheduled Downtime: 25th April

On Wednesday 25th April, we will be doing some scheduled maintenance of our servers, so TASOC will be unavailable most of the day. We apologize for any inconvenience.

13th Apr 2018: Watch the TESS Launch online

You can find information on how to follow the TESS launch online here:

22nd Mar 2018: TESS Launches on 16th April 18:32 EDT

The launch of TESS is now scheduled for Monday, April 16, 2018 at ~6:32 p.m. EDT (no earlier than). Are you ready for launch?

TESS mission clock

Launch Countdown:


19th Apr 2018: Successful TESS launch

We are delighted that TESS was successfully delivered into space on a SpaceX Falcon 9 rocket. TESS launched April 18 at 6:51 p.m. EDT from Cape Canaveral Air Force Station, roughly 40 minutes later TESS separated from the second stage. Shortly after, solar arrays were deployed and telemetry …

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16th Apr 2018: TESS launch today!

UPDATE - Now targeting April 18 for launch.

TESS will launch aboard a SpaceX Falcon 9 rocket on Monday April 16 at 6:32 pm from Space Launch Complex 40 at Cape Canaveral Airforce Station! The TESS spacecraft has been fueled and encapsulated in the rocket fairing and the Falcon 9 …

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12th Apr 2018: Watch the launch

TESS is preparing for launch at 6.32pm EDT on Monday April 16. Update will be posted on the public affairs website. Many familiar faces will be appearing on NASA TV this coming Sunday and Monday.

You can watch the launch live at nasa.gov/tess.

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Tweets from TESS