2017 Exoplanet Archive News

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For previous years' news, see the 2016, 2015, 2014, 2013, and 2011-12 archives.

For a compilation of weekly tips that have appeared in past news items, see the Tip Archive.

To view only the most recently added planets and updated parameters (default and non-default), see this pre-filtered and pre-sorted interactive table.


November 17, 2017

Note to our users: We've changed our link format in the news so you can easily access overview pages for both planet hosts and their planets. Clicking on the host name or the planet letter will take you to object's respective overview page.

This week we've added eight confirmed planets, including Ross 128 b, a rocky planet discovered to be only 11 light years from Earth, making it the second-closest known exo-Earth after Proxima Centauri b. Read the discovery paper (Bonfils et al. 2017) and the press release.

The other planets (and their hosts) are K2-136: b, c, & d; K2-137: b; Kepler-1652: b; Kepler-1653: b, and NGTS-1 b, a hot Jupiter from the new Next-Generation Transit Survey (NGTS). We've also added planetary parameters for 20 planets. Click on the host name or the planet letter to view its respective overview page, or see the Confirmed Planets table.

News photo: Artist’s impression of Ross 128 b with its red dwarf parent star in the background. (Credit: ESO/M. Kornmesser)

November 2, 2017

There are five new planets around three systems in the archive this week, including MASCARA-1 b, the first exoplanet discovered by the hot Jupiter-hunting Multi-site All-Sky CAmeRA (MASCARA) survey. The other planets are K2-135 b, c, & d, and KELT-20 b.

See the Confirmed Planets table for the new data.

October 27, 2017

We've added 13 confirmed planets this week, which bumps up the total confirmed planet count to 3,545. The planets are: K2-133 b, c, & d, OGLE-2013-BLG-0132L b, OGLE-2013-BLG-1721L b, WASP-151 b, WASP-153 b, WASP-156 b, HD 34445 c, d, e, f, & g. See the Confirmed Planets table for the new data.

Fun fact: HD 34445 is a six-planet system, and while one of the planets (b) has been known since 2010, it took nearly 19 years of data from three different telescopes to discover this rich system of giant-sized planets orbiting a solar-like star.

Also added this week: new parameters for 27 K2 planets from Dressing et al. (2017). See the Extended Planet Data table for the data.

October 19, 2017

We've added three new planets: K2-131 b, a super-Earth with an ultra-short period; K2-132 b, an inflated Hot Jupiter; and GJ 1148 c, which is the first planet to be discovered by the CARMENES radial velocity instrument. We've also updated several planetary parameters. View all of the data in the Confirmed Planets table.

We're also happy to share a discovery that will help scientists find more exoplanets! A Direct Imaging Survey of Spitzer detected debris disks: Occurrence of giant planets in dusty systems by Meshkat et al., which was accepted by The Astronomical Journal, finds that giant exoplanets that orbit far from their stars are more likely to be found around young stars that have a disk of dust and debris than those without disks. Congratulations to  Dr. Tiffany Meshkat, who is an IPAC scientist.

Read the paper, and the NASA press release. For a curated list of published papers that derive planet occurrence rates, see our Planet Occurrence Rate Papers page.

October 5, 2017

Several updates this week!

  1. K2's Bumper Crop of Planets! We have added 16 confirmed planets from Dressing et al. (2017). They are: K2-116 b, K2-117 b & c, K2-118 b, K2-119 b, K2-120 b, K2-121 b, K2-122 b, K2-123 b, K2-124 b, K2-125 b, K2-126 b, K2-127 b, K2-128 b, K2-129 b, and K2-130 b.

    Click on their names for their respective Confirmed Planet Overview Page, or go to the Confirmed Planets interactive table.
  2. K2 Targets and Stellar Parameters: The K2 mission's Campaign 15 target list is now available through the K2 Targets Search interface. To see the list, enter 15 as a K2 Campaign column constraint and click Submit Search. We have also added stellar parameters from campaigns 13 and 14.
  3. More Kepler Simulated Data Products: The Kepler project has released new and updated files for the DR 25 simulated data set. The additions include the TCERT reports, Robovetter results, and input and output files for two additional scrambled group runs. The Robovetter results for all simulated data products and the operational data have been updated to include the impact parameter. See the Simulated Data page for download links and documentation.

September 28, 2017

This week we've added three planets: OGLE-2016-BLG-0263L b (a microlensing planet!), HD 208897 b, and GJ 625 b. We've also updated parameters for various planets. See all confirmed planet data in the Confirmed Planets interactive table, or just this week's new data in this pre-filtered table.

September 21, 2017

The Kepler Project has delivered the Q1-Q17 DR25 version of the Astrophysical False Positive Probabilities table, which is the final update for this data set. The DR25 data can be viewed in the interactive table; the DR24 version remains online as well.

Updated documentation associated with this release is linked to the Kepler Completeness and Reliability Products page, specifically:

  1. Table Data Columns Definitions: Note that some of the descriptions and one table label have changed for the DR25 release.
  2. Table Column Description: Additional notes have been added regarding DR25 data.

September 15, 2017

The archive has four new planets this week! They are: CoRoT ID 223977153 b, MOA-2012-BLG-006L b, K2-114 b, and K2-115 b. See their data in their respective Confirmed Planet Overview Pages, or the Confirmed Planet interactive table.

We also removed K2-51 b, K2-67 b, and K2-76 b, based on published refutations in Shporer et al. 2017. They are listed on the archive's Removed Targets page. Please see question #25 in the FAQ ("What happens to confirmed planets that are retracted?") for more information about how the archive handles false positives.

August 31, 2017

The Q1-Q17 DR 25 Kepler Objects of Interest (KOI) table has been closed, marking the completion of the KOI data set. There will be no new KOIs or updates to existing KOIs. For details about the final set of changes to the DR 25 table, see the Q1-Q17 DR 25 section of the Purpose of KOI Activity Table, which includes the delivery history and log file.

With today's release, the astronomical community now has access to a complete and internally consistent set of KOI data products for research. These include:

There will be a final delivery of the Kepler Astrophysical False Positive Probabilities table at a later date.

If you are using our API service to retrieve data from the tce or koi tables, please note the labeling was previously incorrect. The names and descriptions have changed for the following data columns (including their associated uncertainities and string names, if applicable). Please update your queries as needed:

KOI Table

Former Database Column NameNew Database Column NameDescription
koi_dicco_frakoi_dicco_mraLink
koi_dicco_fdeckoi_dicco_mdecLink
koi_dicco_fsky koi_dicco_msky Link
koi_dikco_frakoi_dikco_mraLink
koi_dikco_fdeckoi_dikco_mdecLink
koi_dikco_fskykoi_dikco_mskyLink

TCE Table

Former Database Column NameNew Database Column NameDescription
tce_dicco_fratce_dicco_mraLink
tce_dicco_fdectce_dicco_mdecLink
tce_dicco_fskytce_dicco_mskyLink
tce_dikco_fratce_dikco_mraLink
tce_dikco_fdectce_dikco_mdecLink
tce_dikco_fskytce_dikco_mskyLink

August 24, 2017

This week we've added three planets discovered to be orbiting the nearby low-mass star YZ Cet: YZ Cet b, c and d. These planets have the lowest minimum masses measured by radial velocity. See their data in their respective Confirmed Planet Overview Pages, or the Confirmed Planet interactive table.

August 17, 2017

This week we've added seven new planets, including four orbiting tau Ceti, the closest Sun-like star to our solar system (read the discovery paper and press release). The new planets are: tau Cet g, h, e, and f, WASP-91 b, WASP-105 b, and WASP-107 b.

We've also added new transmission spectra for WASP-4 b and Qatar-1 b, and one emission spectroscopy file for WASP-121 b.

Also, we've removed K2-78 b, K2-82 b, and K2-92 b, which were shown to be false positives based on Cabrera et al. 2017. They are listed on the archive's Removed Targets page.

July 28, 2017

This week we welcome WASP-167 b/KELT-13 b, K2-113 b, and MXB 1658-298 b to the archive, which bumps the total number of confirmed planets past 3,500! See their Confirmed Planet Overview pages or the Confirmed Planets interactive table for the data.

July 20, 2017

The Exoplanet Archive has integrated Jason Eastman's EXOFAST code into its suite of web services, which provides the tool with a more robust and stable home with several enhancements.

EXOFAST has been an important fitting tool for astronomers who want to use transit light curves or radial velocity data and various inputs to create models of planet systems. For more details, refer to Eastman et al. (2013).

The Exoplanet Archive's version of EXOFAST offers the same IDL-based calculations as the original code, and also provides sufficient back-end computing resources to enable Markov Chain Monte Carlo (MCMC) analysis. In addition, the new EXOFAST draws on the archive's database of stellar and planetary parameters, which are updated weekly based on the current literature.

Interface enhancements include:

  • Interactive tables to view, sort and filter your uploaded data before running EXOFAST.
  • A preview pane to review the first 100 rows of your uploaded time series data, providing an opportunity to do a quick quality check before running EXOFAST.
  • Full-color, interactive plots of input files, including color, line and point control.
  • A temporary history of your results from recent EXOFAST sessions, saving you the time and effort of re-running analyses.

To access EXOFAST, click the EXOFAST: Transit and RV Fitting button on the archive home page under Tools and Services, or mouse over Tools in the menu bar to select it from the drop-down menu.

The archive extends special thanks to Jason Eastman for providing the EXOFAST code, and for his help with integrating his tool to work with Exoplanet Archive data.

July 13, 2017

This week we have added one new planet, HIP 65426 b, as well as new transmission spectra for five planets: WASP-127 b, WASP-52 b, HAT-P-18 b, HAT-P-3 b, and TrES-3 b.

Also, the K2 mission's Campaign 14 target list is now available through the K2 Targets Search interface. To see the list, enter 14 as a K2 Campaign column constraint and click Submit Search.

June 29, 2017

This week we have added one new planet, TYC 4282-605-1 b, which can be accessed from the Confirmed Planet Overview page as well as the Confirmed Planets interactive table. We have also added transmission spectroscopy measurements for HAT-P-32 b, WASP-39 b, HAT-P-19 b, GJ 1214 b, and WASP-101 b.

June 22, 2017

One new microlensing planet, MOA 2012-BLG-505L b, has been added to the archive.

The Kepler project has released an updated version of the Certified False Positive Table, which added 918 newly examined KOIs and includes evaluation of all confirmed planets that were dispositioned as false positives in the DR 25 catalog. The data and log file are available on the Kepler Completeness and Reliability page.

June 15, 2017

The Kepler project has released a set of simulated and occurrence rate data products that are now part of the archive. These products support robust planet occurrence rate calculations by determining the Kepler pipeline's completeness and reliability. For more information, see the Kepler Simulated Data page, which contains links to all related products and documentation, and the Pipeline Completeness Contours items on the Kepler Completeness and Reliability page.

We've also added four planets to the archive: HD 27894 c & d, BD+03 2562 b, and HD 177565 b. See their Confirmed Planet Overview pages or the Confirmed Planets interactive table for the data.

June 8, 2017

This week we've added HD 3167 d and HD 20794 e, both of which are new planets in existing systems. See the Confirmed Planets interactive table or their individual Confirmed Planet Overview pages.

June 5, 2017

The hottest hot Jupiter that was announced today at the AAS summer meeting is in the archive. See the data for KELT-9 b on its Confirmed Planet Overview page, as well as the star's data on the Planet Host Overview page.

Also, read the Gaudi et al. 2017 discovery paper in Nature and the Ohio State University press release.

June 1, 2017

Two new cool dwarf planets, Kepler-1650 b and Kepler-1651 b, have been added to the archive and can be accessed from their Confirmed Planet Overview pages as well as the Confirmed Planets interactive table. We've also removed HD 131399 A b, which was detected via imaging and has been shown to be a false positive by Nielsen et al. 2017.

May 18, 2017

Two New Planets: There are two new confirmed planets in the archive this week, K2-110 b and MOA 2016-BLG-227L b. We also changed the default names for the following six K2 planets that were previously known by their EPIC IDs: K2-97 b, K2-98 b, K2-100 b, K2-101 b, K2-102 b, and K2-104 b. The new default names match their references in the literature.

KOI DR 25 Data: The Markov Chain Monte Carlo (MCMC) posterior chains and light curves for Kepler DR 25 KOIs are now available. To download, see the links on the Kepler Objects of Interest page. A description of the files is also available in the documentation.

May 10, 2017

New this week:

Three More Planets: We welcome KELT-11 b, K2-111 b, and OGLE-2016-BLG-1195L b to the archive! See the Confirmed Planets interactive table or their individual Confirmed Planet Overview pages.

New KOI Delivery: Transit fits have been updated for 75 DR 25 Kepler Objects of Interest (KOI). Stellar metallicities and uncertainties related to stellar surface gravity and stellar mass have been corrected to agree with the Q1-17 DR 25 Kepler Stellar data. Lastly, minor flags, which indicate why KOIs are FALSE POSITIVEs, have been added to the comment column. View the data in the KOI Cumulative interactive table, and read the documentation.

April 27, 2017

We've added eight newly confirmed planets to the archive, including LHS 1140 b, the temperate rocky super Earth transiting a nearby M dwarf reported in Dittmann et al. 2017. More information is in the press release.

The other new planets this week are: Kepler-1649 b, KELT-12 b, KELT-18 b, HIP 67537 b, Qatar-3 b, Qatar-4 b, and Qatar-5 b. See their Confirmed Planet Overview pages or the Confirmed Planets interactive table for the data.

We've also upgraded our web site to https to provide additional security. This means all archive web pages and API queries will begin with https instead of http. For example, the new home page address is now:

https://exoplanetarchive.ipac.caltech.edu/

This change should not be noticeable to users. Visitors who go to any http page within our site will be automatically redirected to the secure (https) version. However, if you have any issues with accessing an archive web page or the API, please contact our Help Desk.

April 20, 2017

We've added K2 stellar parameters for campaigns 10, 11, and 12 as described in Huber et al. 2016. Access them from the K2 Table Search by specifying the campaign and any of the stellar parameters.

We've also added 19 missing KOIs to the DR 25 Kepler Astrophysical Positional Probabilities (APP) table. See the DR 25 Reliability table on the Kepler Completeness and Reliability page for links to a pre-filtered table and documentation.

April 13, 2017

We've added three planets to the Confirmed Planets table: HAT-P-67 b, Kepler-19 d, and Kepler-150 f. See the Confirmed Planets interactive table or the individual Confirmed Planet Overview pages.

Also, K2 Campaign 13 targets are now available through our K2 Targets search interface, and from our API service by specifying &where=k2_campaign=13 in your query.

April 6, 2017

New Kepler DR 25 data products added this week include Astrophysical Positional Probabilities, TCE bootstrap statistics, and a new default parameter for flagging rogue TCEs:

  1. Astrophysical Positional Probabilities: These products examine the possibility of transit signals arising from an astrophysical source other than the target star. See the new DR 25 Reliability table on the Kepler Completeness and Reliability page for links to a pre-filtered table and documentation.
  2. DR 25 TCE bootstrap statistics: These data describe the probabilities of false alarms to further refine detection levels, and have been added to the TCE interactive table.
  3. The new default column in the TCE interactive table, tce_rogue_flag, flags TCEs detected in a uniform manner. A full description is provided on the data column definitions page. For more information about default parameters, see our FAQ.
  4. Note: You may also need to update any saved preference sets to include the new column.

March 30, 2017

There are 11 additional planets in the Confirmed Planets table, bringing the total number to 3,472. The planets are: Kepler-20 g, NGC 2682 Sand 978 b, GJ 3138 b, c, & d, GJ 3323 b & c, GJ 273 b & c, and GJ 3293 d & e.

The Confirmed Planet interactive table has all confirmed planet data in the archive, while this pre-filtered and pre-sorted table contains only the new planets and updated parameters for this week.

March 23, 2017

This week we have some important data updates:

  1. Kepler DR 25 KOI Catalog: The initial Q1-Q17 DR 25 KOI catalog produced by the Kepler Project is now available in the archive. The table status is currently Open, so dispositions are not finalized and may change. The new KOI hosts have KOI numbers between 7621 and 8297. The Robovetter score indicates confidence in the current disposition; this is listed as the koi_score parameter in the KOI interactive table and application programming interface (API). For an explanation of how individual dispositions are generated, see the Q1-Q17 DR 25 KOI Companion document. For a summary of all KOI catalogs by quarter (with links to their respective interactive tables and documentation), see the Purpose of KOI Activity Tables document.
  2. New Kepler Stellar Occurrence Rate Columns: We've added DR 25 completeness data to the Kepler Stellar table to help with star selections for calculating occurrence rates. These can be be accessed in the Kepler Stellar interactive table and by our application program interface (API). We've also updated the Kepler Completeness and Reliability page with a DR 25-specific section.
  3. If you would like to create or update an API query to retrieve the data, the new columns are:

    • RA†: ra
    • Dec†: dec
    • Kepler-band†: kepmag
    • Stellar Surface Gravity†: logg
    • Stellar Metallicity†: feh
    • Stellar Effective Temperature†: teff
    • Date of Last Update†: st_vet_date
    • Quarterly Data Exists†: st_quarters
    • Number of Associated Confirmed Planets†: nconfp
    • Number of KOIs†: nkoi
    • Number of TCEs†: ntce
    • Duty Cycle: dutycycle
    • Duty Cycle Post Planet Removal: dutycycle_post
    • Data Span: dataspan
    • Data Span Post Planet Removal: dataspan_post
    • Multiple Event Statistic (MES) Threshold: mesthres[hour]
    • Root-Mean-Square (RMS) Combined Differential Photometric Precision (CDPP): rrmscdpp[hour]
    • rmsCDPP Slope for Long Transit Durations: cdppslplong
    • rmsCDPP Slope for Short Transit Durations: cdppslpshrt
    • Timeout Indicators: timeout
    • Timeout Indicator Summary: timeoutsumry
    • Limb Darkening Coefficient: limbdark_coeff[1,2,3,4]

    In addition, the following columns have been deprecated:

    • General Comment: st_comment
    • Kepler-band Contamination: contamin
    • Stellar Surface Rotation: srot
    • Photometric Range: phot_range
    • Limb Darkening Model Name: limbdark_mod

    Note that no data were deleted when the columns were deprecated (i.e., they were never populated).

    More detailed definitions of each column are provided in the data column definitions document. In the above list, new default columns are flagged with a †, so existing API queries to the Kepler Stellar table (keplerstellar) may need to be updated. For more information about default columns, see our Frequently Asked Questions.

    Also, you may also need to update any saved preference sets to include these new columns.

March 16, 2017

Three new planets (HATS-22 b, HATS-23 b and HATS-24 b) have been added to the archive, bringing the total number of confirmed planets to 3,461. See the Confirmed Planets interactive table or the individual Planet Overview pages.

HD 219134, our closest neighboring star with multiple transiting planets, has been updated with new parameters for 4 of its 6 planets. The second planet (c) was recently confirmed as transiting so it will now appear in Transit and Ephemeris Service search results.

March 9, 2017

You've asked and we've listened: all of today's updates are in response to user requests. Thank you for helping us improve the archive!

  1. Pre-generated Plots Upgrade! We've added four new pre-generated plots: Density vs. Mass, Density vs. Radius, Radius vs. Period, and Cumulative Detections of New Planets by Discovery Year. We've also added color blind-accessible versions for every pre-generated plot that can be accessed by a link directly under each plot.

    These plots provide the community fast access to presentation material that describe the current state of the exoplanets field in terms of their number and our understanding of their orbital and physical characteristics. To see all of the plots, go to the Pre-generated Plots page. To suggest a new plot or to provide other feedback, please contact us.

  2. New Confirmed Planet Parameter: Angular Separation. The Confirmed Planet interactive table now includes Angular Separation (pl_angsep) as a planet parameter. It is not a default; to add it to the table:
    1. Click Select Columns.
    2. Expand the Planet Columns menu and scroll to Calculated Angular Separation [mas].
    3. Check the box for the parameter. Expand the submenu to add the uncertainties as well.
    4. Click Update Selection, which refreshes the table.
    5. Click the x in the upper-right corner of the chooser pop-up window to close it.
    6. Scroll the table to the far-right to view the new column(s).

    Note that you can drag-and-drop columns to re-arrange them, and the User Preferences feature will save your table configuration for future visits. See the Interactive Table User Guide for details.

  3. Documentation index now more bookmark-able! The Documentation index, which is both a catalog and search tool for every piece of documentation in the NASA Exoplanet Archive, has been enhanced so users may now see, save and share the URL of the document in the display pane. To access the index, click the Documentation button at the bottom of the home page, or click on Support and select Documentation Index from the web site's drop-down menu.

March 3, 2017

Five planets added this week: HD 17674 b, HD 29021 b, HD 42012 b, and HD 106315 b & c. See the Confirmed Planets interactive table or the individual Planet Overview pages.

February 22, 2017

We've added data for the TRAPPIST-1 system confirmed to have seven Earth-size planets, some of which are in the habitable zone. The archive now contains parameters for: TRAPPIST-1 b, c, d,e, f, g, and h. Click on the names to view their respective Planet Overview pages, or go to the Confirmed Planets table. To view only the most recently added planets and updated parameters (default and non-default), see this pre-filtered and pre-sorted interactive table.

You may also read the Gillon et al. 2017 discovery paper in Nature and the NASA press release.

February 9, 2017

This week there are two new planets, K2-108 b and KELT-16 b, as well as various updated parameters. See the Planet Overview pages or the Confirmed Planets interactive table for the data.

February 2, 2017

Newly confirmed planets K2-107 b, WASP-53 b & c, WASP-81 b, and TAP 26 b have been added this week, all of which are accessible from the Confirmed Planets table. You may also access their Overview pages using the Explore the Archive search on the home page.

January 26, 2017

  1. We're pleased to announce a NEW Microlensing table! This interactive table focuses on microlensing-specific observational and model parameters. Additional data and objects will be added over the next few months until all confirmed microlensing planets are available. The columns available in this table are listed and defined in the documentation. To compare and review microlensing planet against other confirmed planets, please use the Confirmed Planets interactive table.
  2. Two new planets added: We've also added K2-106 b and c to the archive. Click on the names to view their respective Overview pages, or go to the Confirmed Planets table.

January 12, 2017

Happy new year! We are ushering in 2017 with the following:

  1. One New Planet: We've added K2-105 b to the Confirmed Planets table. (Fun fact: This same time last year we added K2-25 b, so there have been 80 K2 planets confirmed in a year's time.)
  2. More Emission Spectroscopy: We have completed the backfill of the published emission spectroscopy literature into our database! Check out the interactive table and let us know if there are missing values by submitting a Helpdesk ticket.
  3. K2 Campaign 12 Targets: These are now available through our K2 Targets search interface, or by using our API service by specifying &where=k2_campaign=12 in your query.
  4. Updated Kepler Document: An erratum has been published for the DR24 Window Functions; users of these functions should consult the revised documentation (KSCI-19085-002.pdf; see Section 4).