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.


18th Sep 2020: TESS Weekly Bulletin: September 18th

Welcome TESS followers to our weekly news bulletin! This week we present two papers from the archive in addition to a NASA press release. Enjoy!

beta Cas: the first delta Scuti star with a dynamo magnetic field (Zwintz et. al., 2020) :

In this paper the authors obtain photometric time series …

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11th Sep 2020: TESS Weekly Bulletin: September 11th

STATUS UPDATE: Sector 27 data comes out Monday! We are still in Sector 29. The target lists for Sectors 29 and 30 are online and can be found here.

Hello TESS followers and welcome to our weekly news bulletin! This week there are multiple papers posted to the archive that …

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31st Aug 2020: TESS Weekly Bulletin: August 31st

STATUS UPDATE: Sector 28 has ended and Sector 29 has started!.

Welcome TESS followers to our weekly news bulletin!

The TOI-763 system: sub-Neptunes orbiting a Sun-like star (Fridlund et. al., 2020) :

In this paper the authors report the discovery of a planetary system orbiting TOI-763, also known as CD-29 7945 …

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TESS mission clock

Launch Countdown:

Where is TESS right now?