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.


26th Sep 2017: TASC Target Lists version 3

The TASC target lists has been updated (to version 3). The list contains just short of 30,000 targets and was created by joining the proposals from the different TASC working groups.

17th Jul 2017: TASC3/KASC10 - Live Streaming

Remember that you can follow the TASC3/KASC10 workshop in Birmingham directly here:

10th Jul 2017: TASC Target lists

We have just made the first public version of the combined TASC target list available on TASOC. You can find more information about the procedures used to create the target list and of course the lists themselves here.


9th Oct 2017: Proposal submission now closed

Thanks to the many people who submitted Cycle 1 TESS GI proposals, we are very pleased with the response. We are now in the proposal of organizing the review of proposals.

We received over 140 proposals for nearly 100,000 unique 2-min cadence targets. About 60% of proposal were stellar …

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3rd Oct 2017: Release of TESS cool dwarf catalog

A paper describing efforts to create a catalog of cool dwarf stars for TESS target selection is available on the arXiv. This release details the stellar properties of dwarf stars cooler than 4000K, with the specific aim to help identify exoplanet search targets to be observed by TESS at 2-min …

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26th Sep 2017: Target list pointers

The proposal deadline is just over a week away and many of you are deep into the proposal writing process. Here are two small reminders/requests for target lists.

  • TESS Guest Investigator Cycle 1 is awarding targets in the Southern Ecliptic Hemisphere. Northern Ecliptic targets will be solicited in Cycle …

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Tweets from TESS

TESS mission clock

Launch Countdown:

NB: The launch date has not been set yet, so the countdown is, for now, only ment as a guideline.