The Kepler Asteroseismic Science Operations Center provides asteroseismological data from the NASA Kepler mission to astronomers who are members of the Kepler Asteroseismic Science Consortium (KASC).

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In order to have access to the Kepler Asteroseismic data you have to be a member of KASC. Please see the "New KASC member" page on how to become a member.


15th Aug 2016: Failure of CCD module 4

Another CCD module (module 4) of the Kepler photometer has failed during K2 Campaign 10. This means that there is now a total of three CCD modules of the photometer no longer in operation.
Read more here:

9th Aug 2016: New release of Kepler Q0-Q17 short cadence data on the way

The final reprocessing of the Kepler Q0-Q17 short cadence data (DR25) is now complete. This release corrects both the scrambled collateral smear issue reported in the Global Erratum for Kepler Q0-Q17 & K2 C0-C5 Short-Cadence Data and the Dynablack calibration problem reported in the Data Release 24 Notes Q0–Q17 Erratum.
The new data is in the process of being made available on KASOC, and we will keep you posted on news when they will be available for download.

4th Aug 2016: New release of C3-5 short cadence data

Reprocessed short cadence target pixel files for K2 Campaigns 3, 4, and 5 are now available for download.
This release corrects the short cadence pixel calibration bug previously described in the Global Erratum for Kepler Q0-Q17 & K2 C0-C5 Short-Cadence Data (KSCI-19080).
No other features of the files or the data processing have changed. The long cadence data are unchanged.

Kepler & K2 News

21st Aug 2016: 21st Microlensing Conference, February 1–3, 2017

The 21st International Microlensing Conference—entitled "Ushering in the New Age of Microlensing from Space"—will take place on February 1–3, 2017, in Pasadena, California.

The conference intends to highlight results from K2's Campaign 9, a combined ground- and space-based microlensing survey that was carried out using the Kepler spacecraft this summer. The conference will also feature results from other space- and ground-based microlensing surveys, and will be preceded by a free half-day workshop featuring a series of introductory microlensing talks.

Head to the conference website for further details and registration.

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15th Aug 2016: Retirement of CCD Module 4 confirmed

As reported in detail in the latest Kepler Mission Manager Update, additional spacecraft telemetry appears to confirm the loss of CCD Module 4 during K2's current Campaign 10.

Module 4 is the third of the 21 science modules to have failed in-flight. Such hardware failures were foreseen in the initial mission planning, and the system design is robust and compartmentalized to minimize the impacts. After more than seven years in the harsh conditions of space, 85 percent of Kepler's original detectors are still operating.

Campaign 10 science observations were interrupted between July 20 and August 3 as a result of the anomaly. Observations have since returned to normal and no further interruptions are expected.

Impact on GO programs

For the K2 mission’s current Campaign 10, the targets that fell on Module 4 will yield no data beyond July 20. For all campaigns going forward, we will only allocate pixels to targets which fall on one of the remaining 18 operational modules.

On average 4% of the targets requested by selected GO programs fell on the retired Module, with no single program affected by more than 20%.

The pixel storage budget that would have been used by Module 4 during future Campaigns will be re-allocated to other Modules, allowing the total number of K2 targets to remain unchanged. The impact on science is expected to be small as a result.

None of the high-profile targets in future Campaigns, such as Trappist-1 or Comet Chiron, are known to be affected. Investigators who are concerned about a particular target are encouraged to contact us at keplergo@mail.arc.nasa.gov.

Where is Module 4?

The ill-fated Module is located on the outside of the focal plane, where both the pointing stability and the point spread function are less ideal. Its position is marked using a pen in the photograph below:

@johngizis @KeplerGO the one my pen is pointing to. pic.twitter.com/KjQ8oDoiE1

— Erin Ryan (@erinleeryan) August 8, 2016

Module 4 contains channel numbers #9, #10, #11, and #12.

K2fov update required

The due date for K2 Cycle 5 proposals for targets to be observed in Campaigns 14, 15, and 16 is just over a month away. The K2fov target selection tool has been updated to version 5.1 to incorporate the loss of Module 4.

All candidate investigators must upgrade to this new version. Instructions for updating your installation of K2fov are provided on the proposal preparation page.

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11th Aug 2016: Reprocessed Kepler Q0-Q17 short cadence data available

The final reprocessing of the Kepler Q0-Q17 short cadence data has been completed. The new target pixel and lightcurve files have been ingested into the Kepler data archive at MAST.

This release (DR25) corrects both the scrambled collateral smear issue reported in the Global Erratum for Kepler Q0-Q17 & K2 C0-C5 Short-Cadence Data (KSCI-19080-002.pdf) and the Dynablack calibration problem reported in the Data Release 24 Notes Q0–Q17 Erratum (KSCI-19064-002a-DRN24err.pdf).

A revised version of the Data Release Notes 25 KSCI-19065-002DRN25.pdf is available as well.

Read more

Recently published scientific publications

  • Vrard M.: Period spacing in red giant II. Automated measurement
    Updated: Tue 16th August 2016 11:21.
  • J. Pascual-Granado: Limits in the application of harmonic analysis to pulsating stars
    Updated: Mon 15th August 2016 09:52.
  • Ehsan Moravveji: Sub-Inertial Gravity Modes in the B8V Star KIC 7760680 Reveal Moderate Core Overshooting and Low Vertical Diffusive Mixing
    Updated: Sun 10th July 2016 10:33.
  • A. Miglio: Detection of solar-like oscillations in relics of the Milky Way: asteroseismology of K giants in M4 using data from the NASA K2 mission
    Updated: Mon 4th July 2016 22:56.
  • S. Deheuvels: Measuring the extent of convective cores in low-mass stars using Kepler data: toward a calibration of core overshooting
    Updated: Wed 8th June 2016 10:04.
  • Simon J. Murphy: Near-uniform internal rotation of the main sequence gamma Doradus pulsator KIC 7661054
    Updated: Wed 25th May 2016 03:07.
  • V. Van Eylen: What asteroseismology can do for exoplanets: Kepler-410A b is a Small Neptune in an eccentric orbit consistent with low obliquity
    Updated: Tue 26th April 2016 12:23.

Kepler mission clock

Launch Countdown: