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.


8th Jun 2018: Wondering what the TIC is for your favorite target?

Then we have made it easy for you to find out. Just go to the "Star Catalog" and put in the name of your favorite target, and voila!
The Star Catalog will automatically cross-match the name you enter with TIC and SIMBAD and should give you all the information about your target in the blink of an eye.
Give it a try!

2nd May 2018: Minor updates to TASC Target List

We have made some minor changes to the TASC Target List (version 06.04; 2018-04-30), mainly in the targets used for the TESS time verification.

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.

TESS mission clock

Launch Countdown:

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11th Jul 2018: NASA’s TESS spacecraft continues testing prior to first observations

After a successful launch on April 18, 2018, NASA's newest planet hunter, the Transiting Exoplanet Survey Satellite, is currently undergoing a series of commissioning tests before it begins searching for planets. The TESS team has reported that the spacecraft and cameras are in good health, and the spacecraft has successfully …

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22nd Jun 2018: TESS Input Catalog Updated

The TESS mission is pleased to announce the release of the updated version of the TESS Input Catalog and associated documentation. TIC-6 is a compiled catalog of 700 million stars and galaxies across the whole sky. It includes positions, proper motions, parallaxes, and colors of stars, along with derived physical …

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21st May 2018: TESS successfully completes lunar flyby

TESS successfully completed a lunar flyby on 17 May at 06:34:35 UTC (2:34 AM EST). At its closest approach, TESS was 8,253 km from the lunar surface. Based on the successful lunar flyby, no adjustment burn was required. The next maneuver is the Period Adjust Maneuver …

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Tweets from TESS