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.


15th Jun 2020: Reprocessed TESS data for sectors 1-19

As you may have read in the news from the TESS Science Support Center, the TESS data from sectors 1-19 are going to be reprocessed and updated in the coming months. This will mean that as data is re-released, they will no longer be available on the MAST archive.
But fear not! On the TASOC archive, we will make sure that all previous versions of data will always be available, so you can always reproduce your TESS results.
See more here:

10th Jun 2020: Scheduled maintenance today, 13:00-16:00 CEST

We are doing some scheduled maintenance of our systems this afternoon, so data downloads will not be available for some time during that period.

29th May 2020: Did you miss an online event? Watch the recording!

We have now made it possible to watch recordings of online seminars and conferences (if they were recorded) under "Online Events".
Go see the very interesting seminar given by Tim Bedding on delta Scuti stars here:
If you have recordings of other online events that you would like to either host at TASOC or link to, please feel free to contact TASOC.


23rd Oct 2020: TESS Weekly Bulletin: October 23rd

Hello TESS followers and welcome to this weeks news bulletin! This week we have three papers from the archive.

Robust asteroseismic properties of the bright planet host HD 38529 (Ball et. al., 2020):

The wide-field, high cadenced observations provided by TESS makes it perfect to detect and study the oscillations …

Read more

16th Oct 2020: TESS Weekly Bulletin: October 16th

Welcome TESS followers to this weeks news bulletin! This week we have three papers from the archive.

A Highly Eccentric Warm Jupiter Orbiting TIC 237913194 (Schlecker et. al., 2020):

By studying the orbital parameters of warm Jupiters it is possible to gain insight, and place constraints, on the formation mechanisms …

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9th Oct 2020: TESS Weekly Bulletin: October 9th

STATUS UPDATE: Check out our latest NASA feature here, in which you can see a beautiful northern sky mosaic created by TESS.

Welcome TESS followers to our weekly news bulletin! This week we have three papers from the archive.

EvryFlare III: Temperature Evolution and Habitability Impacts of Dozens of Superflares …

Read more

TESS mission clock

Launch Countdown:

Where is TESS right now?