2023 Exoplanet Archive News

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For the current news, see the Exoplanet Archive News page. For other news archives by year, see the 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, and 2011-12 archives.

For a compilation of periodic 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 30, 2023

Eleven New Planets, Including AU Mic d

This week's release includes a new member of the AU Microscopii system: AU Mic d, which was validated using transit timing variations. Read the discovery paper for details.

The other new planets are GJ 806 b & c, TOI-1736 b & c, TOI-2010 b, TOI-2134 b & c, TOI-2141 b, TOI-4377 b, and TOI-4551 b. Click on a planet name to view its System Overview page, or use either the Planetary Systems Table or its companion table the Planetary Systems Composite Table to view, filter, sort, and download data.

There are also new transmission spectra for LHS 475 b and WASP-17 b that can be accessed from the Atmospheric Spectroscopy Table.

News panel image credit: NASA’s Goddard Space Flight Center

November 9, 2023

Announcing The New Transiting Planets Table

We've rolled out a new interactive and query-friendly data table: the Transiting Planets Table! This new table provides a simpler interface to all of the transit-specific observables currently in the Planetary Systems and Planetary Systems Composite Data tables.

The Transiting Planets Table uses the same interactive interface as the Planetary Systems tables and it also supports Table Access Protocol (TAP) queries. For more information about transit-specific resources in the archive, check out our Transiting Planets Resources in the Exoplanet Archive page.

Once you've had a chance to work with the new table, let us know what you think!

Four New Planets and New Spectra by Hubble and Spitzer

This week's new data include four planets found by NASA's TESS mission: TOI-1194 b, TOI-1420 b, TOI-5344 b, and TOI-5398 c. Click on a planet name to view its System Overview page, or use either the Planetary Systems Table or its companion table the Planetary Systems Composite Table to view, filter, sort, and download data.

New spectra from NASA's Hubble and Spitzer Space Telescopes for WASP-17 b and GJ 9827 d have also been added to the Atmospheric Spectroscopy Table.

October 26, 2023

Seven New Planets and Spectra of a Hycean Candidate

This week's update includes seven new planets and planet candidate AU Mic e, as well as spectra by NASA's James Webb Space Telescope for K2-18 b and LHS 475 b.

The K2-18 b spectra are noteworthy because they reveal an abundance of methane and carbon dioxide, as well as a shortage of ammonia. This supports the hypothesis the planet is a Hycean world, with a water ocean beneath a hydrogen-rich atmosphere. More information on the K2-18 b discovery is in NASA's media release and the published paper; use our new Atmospheric Spectroscopy Table to access and plot the data.

The planets added this week are HIP 66074 b, Kepler-1513 c, TOI-5126 b & c, TOI-1801 b, GJ 724 b, and GJ 3988 b. Click on a planet name to view its System Overview page, or use either the Planetary Systems Table or its companion table the Planetary Systems Composite Table to view, filter, sort, and download data.

Share Your Thoughts In Our User Survey!

The NASA Exoplanet Archive and ExoFOP are collecting feedback on what you like and what could be improved about the two archives. This short survey should take approximately 10 minutes to complete.

Whether this is your first time on our site or you're a regular user, we want to hear from you!

News panel image credit: NASA, CSA, ESA, J. Olmsted (STScI), Science: N. Madhusudhan (Cambridge University)

October 12, 2023

Five Giant Planets and TRAPPIST-1 h Spectrum

We've added five giant planets that have temperatures ranging from hot to cold, plus atmospheric spectra for seven planets—including TRAPPIST-1 h!

The new planets are HAT-P-2 c, TOI-199 b & c, TOI-858 B b, and TOI-1408 b; click on a planet name to view its System Overview page, or use either the Planetary Systems Table or its companion table the Planetary Systems Composite Table to view, filter, sort, and download data.

The planets with new atmospheric spectra are HAT-P-41 b, HD 189733 b, KELT-9 b, KELT-20 b, WASP-79 b, WASP-178 b, and TRAPPIST-1 h. Check out the new Atmospheric Spectroscopy Table for the data.

News panel image credit: NASA/JPL-Caltech

September 21, 2023

Nine Planets, Including JWST's First Confirmed Planet

This week's nine new planets include LHS 475 b, a planet almost the exact same size as Earth and also the first planet to be confirmed by NASA's James Webb Space Telescope. Check out the archive's System Overview page, the discovery paper, and NASA's media release.

The remaining eight new planets added this week are 75 Cet c, HD 99492 c, HIP 113103 b & c, TOI-1853 b, TOI-4201 b, and TOI-4600 b & c. Click on a planet name in the above list to view its System Overview page, or use either the Planetary Systems Table or its companion table the Planetary Systems Composite Table to view, filter, sort, and download data.

We've also added new transmission/emission spectra for nine planets to our new Atmospheric Spectroscopy Table. (Have you had a chance to use this new service? Let us know what you think!)

News panel image credit: NASA, ESA, CSA, Leah Hustak (STScI)

September 7, 2023

Thirteen Planets, Seventeen Spectra

This week we have added thirteen new planets to the NASA Exoplanet Archive, spanning a range of sizes and detection techniques.

The new planets are HD 73256 c, HD 75302 b, HD 108202 b, HD 135625 b, HD 185283 b, TOI-332 b, GJ 9404 b, HIP 29442 b,c, and d, KMT-2021-BLG-2010L b, KMT-2022-BLG-0371L b, and KMT-2022-BLG-1013L b. This week's update brings the archive's total planet count to 5,514.

We have also added seventeen new atmospheric spectra, including both transmission and emission spectroscopy. These spectra are for WASP-127 b, WASP-79 b, WASP-62 b, CoRoT-1 b, HD 189733 b, TrES-3 b, WASP-4 b, WASP-12 b, HAT-P-7 b, HAT-P-32 b, HAT-P-41 b, HD 209458 b, KELT-1 b, WASP-117 b, Kepler-138 d, and KELT-9 b.

Click on a planet name in the above list to view its System Overview page, or use the Planetary Systems table or its companion table the Planetary Systems Composite Table to view, filter, sort, and download data. New data have also been added to our Atmospheric Spectroscopy Table.

Finally, please check out the NASA news item on our recent NASA Exoplanet Archive milestone: Discovery Alert: With Six New Worlds, 5,500 Discovery Milestone Passed!

August 24, 2023

Six Planets, Three Spectra

One of this week's six new planets is MWC 758 c, a directly imaged giant planet forming spiral arms around its very young star, which still has its protoplanetary disk. The other planets are HD 36384 b, TOI-198 b, TOI-2095 b & c, and TOI-4860 b. This week's update brings the archive's total planet count to 5,502.

There are also three new transmission spectra in our Atmospheric Spectroscopy Table for TOI-270 d, WASP-79 b, and WASP-189 b.

Click on a planet name in the above list to view its System Overview page, or use either the Planetary Systems table or its companion table the Planetary Systems Composite Table to view, filter, sort, and download data. New data have also been added to our Atmospheric Spectroscopy Table.

News panel image credit: Large Binocular Telescope Interferometer/K. Wagner et al./University of Arizona

August 11, 2023

Thirteen New Planets

This week's update of thirteen new planets brings the archive's confirmed planet count to 5,496.

The new planets are DMPP-4 b, TOI-1470 b, TOI-1470 c, GJ 367 c, GJ 367 d, HN Lib b, TOI-1052 b, TOI-1052 c, HD 6860 b, HD 112300 b, TOI-262 b, TOI-444 b, and TOI-470 b.

News panel image credit: NASA, European Space Agency, Alfred Vidal-Madjar (Institut d'Astrophysique de Paris, CNRS)

July 28, 2023

Thirteen New Planets, Including a Bloated Gas Giant and an Evaporating sub-Neptune

This week's 13 new planets include WASP-193 b, an extremely low-density super-Neptune, and HD 235088 b, a sub-Neptune so close to its star the planet's atmosphere is evaporating.

The other new planets are HIP 81208 C b, TOI-615 b, TOI-622 b, TOI-1680 b, TOI-2084 b, TOI-2641 b, TOI-3785 b, TOI-3984 A b, TOI-4184 b, TOI-5293 A b, and MOA-2022-BLG-249L b.

Click on a planet name in the above list to view its System Overview page, or use either the Planetary Systems table or its companion table the Planetary Systems Composite Table to view, filter, sort, and download data. New microlensing data have also been added to our Microlensing Planets Table.

News panel image credit: NASA, European Space Agency, Alfred Vidal-Madjar (Institut d'Astrophysique de Paris, CNRS)

July 18, 2023

A Better Way to Work With Spectra

We're happy to announce the beta release of the Atmospheric Spectroscopy Table. This new table offers an interactive and unified interface for browsing, visualizing, plotting, and downloading the archive's emission and transmission spectra.

The Atmospheric Spectroscopy Table replaces the archive's Emission and Transmission Spectroscopy tables, which are in the process of being retired. All of the data in the retired tables were transferred to the new table and newly ingested spectra will only be loaded into the new table.

In addition to providing a unified interface to browse, visualize, plot, and download all of the emission and transmission spectra in the NASA Exoplanet Archive, the Atmospheric Spectroscopy Table provides the following features:

Data points are now grouped into spectra files. This presents the data in a format that is similar to how publications present them, and will limit users from unknowingly mixing data sets.
Automatic unit conversion for transmission files. The conversions from different units ensure that all of the spectra can be more easily compared. More information about how the archive calculates transmission parameters is given on the Transmission Spectroscopy Calculations page of the table's user guide, which can be accessed from the User Guide tab within the tool's interface.
Spectral data points plots. When you select a spectrum, its data points are visualized in a plot displayed in the bottom pane.

The Atmospheric Spectroscopy Table is currently in BETA release, and feedback is welcome on its features and performance. Please provide any questions, suggestions, or feedback through the Exoplanet Archive Helpdesk.

July 12, 2023

Seven New Planets

This week's update of seven new planets brings the archive's confirmed planet count to 5,470. The planets are HD 22946 d, HD 307842 b, rho CrB d & e, TOI-908 b, TOI-1634 c, and WASP-84 c.

Click on a planet name to view its System Overview page, or use either the Planetary Systems table or its companion table the Planetary Systems Composite Table to view, filter, sort, and download data.

June 29, 2023

Eighteen New Planets!

This week's update has data for 18 planets, including the four-planet system TOI-4010 b, c, d, & e—the first and only known planetary system with three planets larger than three times the size of the Earth and with orbital periods fewer than 15 days. Read the MIT media release and the discovery paper for details.

The other new planets are BD-21 397 b & c, GJ 328 c, HD 15906 b & c, HD 74698 b & c, HD 94771 b, HIP 54597 b, HIP 9618 b & c, TOI-2000 b & c, and TOI-2018 b.

News panel image credit: NASA/Ames/JPL-Caltech

June 15, 2023

Ten New Planets—Including Kepler's "Last" Planets—and More JWST Emission Spectra

Two of this week's 10 new planets are K2-416 b and K2-417 b, which were found in data taken during the Kepler telescope's final days of observation. Campaign 19 is often overlooked because it was so brief—yielding only seven days of high-quality data—but this NASA article describes how researchers struck exoplanet gold.

The other new planets added this week are TOI-1416 b, TOI-1859 b, TOI-4127 b, TOI-5678, HD 165131 b, HD 167677 b, HD 89839 b, and MOA-2020-BLG-208L b. Click on a planet name to view its System Overview page, or use either the Planetary Systems table or its companion table the Planetary Systems Composite Table to view, filter, sort, and download data.

We've also demoted HIP 84056 b, HD 203473 b, and HD 217850 b based on their new masses, as published in Xiao et al. (2023).

More JWST Emission Spectra

We've added new emission spectra for WASP-18 b and HD 149026 b to our Emission Spectroscopy Table.

In case you missed it: The Emission and Transmission Spectroscopy tables will soon be retired and replaced with the more powerful and thoughtfully designed Atmospheric Spectroscopy Table next month. Read our June 2 announcement and get a sneak preview of the interface!

News panel image credit: NASA/JPL-Caltech (K. Walbolt)

June 2, 2023

Nineteen New Planets and JWST Spectrum

We've added 19 planets this week, as well as a new JWST transmission spectrum. This week's update brings the archive's confirmed planet count to 5,438.

The new planets are TOI-139 b, TOI-672 b, TOI-715 b, TOI-913 b, TOI-2194 b, TOI-2443 b, TOI-2459 b, TOI-2498 b, TOI-3082 b, TOI-4308 b, TOI-5704 b, TOI-5803 b, HD 207496 b, KMT-2019-BLG-0298L b, KMT-2019-BLG-1216L b, KMT-2019-BLG-2783L b, KMT-2022-BLG-0440L b, OGLE-2019-BLG-0249L b, and OGLE-2019-BLG-0679L b. Click on a planet name to view its System Overview page, or use either the Planetary Systems table or its companion table the Planetary Systems Composite Table to view, filter, sort, and download data.

The new GJ 486 b transmission spectrum, which indicates water vapor from either the planet or the host star as explained in NASA's media release, can be accessed in the Transmission Spectroscopy Table.

Coming Soon: A New Atmospheric Spectroscopy Table!

We're excited to announce an upcoming release of a new table that will make it easier to access and work with exoplanet atmospheric data!

In the coming weeks, you'll have a chance to beta-test the Atmospheric Spectroscopy Table. The new table will contain all of the data currently in the Emission and Transmission Spectroscopy tables, both of which will be retired when the new table's BETA period expires later this summer.

A Unified Interface For Browsing Spectra

The Atmospheric Spectroscopy Table will provide a unified interface to browse, visualize, plot, and download all of the archive's emission and transmission spectra and their data points. The new table will also sport the newer, three-panel user interface we've used for other services like the FDL PyATMOS and PSG/INARA contributed data sets.

The following image is a preview of the UI (click to enlarge):

Get Ready to Update Your TAP Queries

The Atmospheric Spectroscopy Table BETA period also provides an opportunity to update any existing Table Access Protocol (TAP) queries currently linked to the retiring Emission (emissionspec) and Transmission (transitspec) Spectroscopy data tables. The new table will support TAP and have some of the same data columns as the retiring tables. This transition document will eventually provide a one-to-one mapping of columns from the old tables to the new one.

Stay tuned for more exciting updates as we strive to provide an even better NASA Exoplanet Archive!

May 18, 2023

72 New Planets, Including a World Covered in Volcanoes

We've added a whopping 72 planets this week, including LP 791-18 d, a world that may be as volcanically active as Jupiter's moon Io. This NASA article has more details on LP 791-18 d, which was discovered using data from TESS and NASA's Spitzer Space Telescope.

Most of this week's new planets—69 of them—are from Valizadegan et al. 2023. The authors employed the same machine learning method they used to validate 301 exoplanets for their 2021 paper, as described in this NASA story. Two other two new planets that are not part of the Valizadegan paper are TOI-1221 b and TOI-244 b.

We've also added a new JWST spectrum of GJ 1214 b to the Emission Spectroscopy table, based on Kempton et al. 2023.

News panel image credit: NASA’s Goddard Space Flight Center/Chris Smith (KRBwyle)

May 4, 2023

A Microlensing Planet Found by...Kepler?

This week's nine new planets include a near-identical Jupiter twin found in archival Kepler/K2 data—the first bound microlensing exoplanet discovered with space-based data. Learn more about the discovery of K2-2016-BLG-0005L b in the University of Manchester media release and the discovery paper.

The eight other planets added this week are TOI-778 b, WISE J033605.05-014350.4 b, EPIC 229004835 b, OGLE-2018-BLG-1126L b, OGLE-2018-BLG-1647L b, OGLE-2018-BLG-1367L b, OGLE-2018-BLG-0932L b, and OGLE-2018-BLG-1212L b.

Click on a planet name in the above list to view its System Overview page, or use either the Planetary Systems table or its companion table the Planetary Systems Composite Table to view, filter, sort, and download data. New microlensing data have also been added to our Microlensing Planets Table.

News panel image credit: University of Manchester

April 20, 2023

Six New Planets, Including Directly Imaged HIP 99770 b

This week's crop of six planets includes HIP 99770 b, a gas giant found orbiting an accelerating star—an interesting case because researchers used astrometry to identify stars showing some acceleration, and then conducted a direct imaging survey on those stars. Learn more in the ESA media release and the discovery paper.

The other new planets are TOI-733 b, Kepler-68 e, Kepler-454 d, K2-312 c, and Kepler-10 d. There are also new parameter sets for 70 planets.

News panel image credit: ESA, CC BY-SA 3.0 IGO

April 13, 2023

New TRAPPIST-1 b Emission Spectrum and 10 Planets

We've updated our Emission Spectroscopy table to include the newest JWST thermal emission measurement on TRAPPIST-1 b. Learn more about the new result in NASA's media release and the discovery paper.

There are also 10 new planets this week. They are: PZ Tel b, TOI-2338 b, TOI-2589 b, TOI-4406 b, KMT-2018-BLG-0030L b, KMT-2018-BLG-0087L b, KMT-2018-BLG-0247L b, KMT-2018-BLG-2602L b, OGLE-2018-BLG-0298L b, and OGLE-2018-BLG-1119L b.

News panel image credit: NASA, ESA, CSA, J. Olmsted (STScI)

March 31, 2023

Ten New Planets!

This week's 10 new planets include K2-415 b, a warm, transiting, Earth-sized planet orbiting a nearby, low-mass M dwarf. Read more about the planet in the news, and in the discovery paper.

The nine additional new planets are TOI-2096 b and c, HD 18438 b, TOI-1338 c, TOI-4603 b, KMT-2021-BLG-0712L b, KMT-2021-BLG-0909L b, KMT-2021-BLG-2478L b, and KMT-2021-BLG-1105L b!

News panel image credit: Alexandra Angelich (NRAO/AUI/NSF)

March 17, 2023

Thirteen Planets, Including a Protoplanet and a Gas Giant Orbiting an M Dwarf

This week's 13 new planets include TOI-5205 b, a gas giant hosted by an M-dwarf star—an unusual pairing that challenges theories about the formation of gas giants. Read the Carnegie Science newsletter and the discovery paper.

We've also added new protoplanet HD 169142 b that was recently confirmed by Hammond et al., and TOI-561 f's status has been updated to False Positive Planet.

The other new planets are GJ 463 b, TIC 279401253 b, TIC 279401253 c, TOI-181 b, TOI-1811 b, TOI-2145 b, TOI-2152 b, TOI-2154 b, TOI-2497 b, Kepler-1976 b, and OGLE-2018-BLG-0799L b.

Click on a planet name in the above list to view its System Overview page, or use either the Planetary Systems Table or its companion table the Planetary Systems Composite Parameters to view, filter, sort, and download data.

News panel image credit: Carnegie Institution for Science/Katherine Cain

March 7, 2023

A Giant Batch of Giants

This week's release has 28 new planets—and 24 of them have a mass bigger than Neptune's. We've also added Wolf 1069 b, a rocky, Earth-sized planet that orbits in its host's habitable zone. The system is located only 31 light-years from Earth.

The new planets are TOI-1937 A b, TOI-2364 b, TOI-2583 A b, TOI-2587 A b, TOI-2796 b, TOI-2803 A b, TOI-2818 b, TOI-2842 b, TOI-2977 b, TOI-3023 b, TOI-3235 b, TOI-3364 b, TOI-3688 A b, TOI-3807 b, TOI-3819 b, TOI-3912 b, TOI-3976 A b, TOI-4087 b, TOI-4145 A b, TOI-4463 A b, TOI-4791 b, Wolf 1069 b, L 363-38 b, TOI-836 b & c, TOI-2525 b & c, and AF Lep b.

News panel image credit: NASA/Ames Research Center/Daniel Rutter

March 1, 2023

New Table: Habitable Worlds Observatory Precursor Science Target List

In support of NASA's search for life, we've launched a new interactive table of the nearby stars that are likely to be targeted by the Habitable Worlds Observatory (HWO). This new table, HWO ExEP Precursor Science Stars, is intended to help inform the observatory's design and enhance its science return.

The new table hosts the precursor science target list compiled by NASA's Exoplanet Exploration Program office, which may motivate observations and analysis that help mission-enabling precursor science in future surveys for exo-Earths. Further details about the target list and the HWO are explained in Mamajek & Stapelfeldt (2023).

To access the new interactive table, as well as the older Mission Stars and Mission Stars+ExoCat tables, click on the Data/Other drop-down menu and select the table name.

the Other section of the exoplanet archive's Data drop-down menu listing the HWO ExEP Precursor Science Stars, Mission Stars, and Mission Stars and ExoCat tables that are also called out in a yellow circle

The new HWO table is also supported by our Table Access Protocol (TAP) service; the older Mission Stars tables can be queried through the archive's application programming interface (API). Additional information, including data column definitions for all three tables, are available through the Mission Stars documentation page.

Let us know how you like the table and how it helps your research! Contact us through social media or our Help Desk.

February 24, 2023

Twenty-two Microlensing Planets

This week's planetary system haul is a bumper crop of microlensing exoplanets—22 of them, in fact.

Here's the full list:

Click on a planet name in the above list to view its System Overview page, or use any of three interactive tables to view, filter, sort, and download data: the Microlensing Planets Table, the Planetary Systems Table, and its companion table the Planetary Systems Composite Parameters.

February 9, 2023

Eight Planets and Three More JWST Spectra

We're now hosting all four WASP-39 b transiting spectra taken by JWST's Early Release Science (ERS) program!

We've added three additional WASP-39 b spectra from NASA's Webb Telescope to our Transmission Spectroscopy table, which provides a single place to access publicly available spectra taken by various telescopes for this object, including NASA's Hubble and Spitzer, the Very Large Telescope, and Chile's Observatorio Astronomico Nacional.

Pro Tip: To filter the table to view only WASP-39 b entries, enter WASP-39 b in the Planet Name column. Enter webb in the Facility column to further filter the table to only display JWST entries.

We've also added eight planets: TOI-1669 b, TOI-1694 b & c, TOI-4342 b & c, TOI-4562 b, and OGLE-2019-BLG-0468L b & c. Check out their data on their respective System Overview pages or in the Planetary Systems and Planetary Systems Composite Parameters tables.

News panel image credit: NASA, ESA, CSA, J. Olmsted (STScI)

January 26, 2023

Two New Planets

This week we welcome two new planets: super-Earth GJ 1151 c, which happens to be in a system that lost a planet to a published refutation in 2021, and hot Jupiter TOI-4582 b.

Access all the new data from the Planetary Systems Table and its companion table, Planetary Systems Composite Parameters, which offers a more complete table of planet parameters combined from multiple references and calculations.

News panel image credit: Detlev Van Ravenswaay/Science Photo Library

January 20, 2023

Two Planets Added and Two Demoted

One of this week's two new planets is TOI-700 e, a second planet in that system's habitable zone that shows how NASA's TESS is finding smaller and smaller worlds. Read the discovery paper by Gilbert et al. 2023 and the NASA Exoplanets media article. This week's other new planet is nu Oct A b.

We have also added a new candidate planet to the proxima Cen System Overview page.

Lastly, we have dispositioned two planets in the archive to False Positive Planets: Kepler-486 b (KOI-189 b) and Kepler-492 b (KOI-205 b). Both demotions are based on published refutations; further details are given on the Excluded Targets page. Data for both objects will remain on their respective System Overview pages.

News panel image credit: NASA/JPL-Caltech/Robert Hurt

January 9, 2023

Happy New Year!

For our first release of 2023, we present six planets that include a new, fourth planet in the Kepler-138 system, as well as new parameters for two confirmed planets in the same system that are possible water worlds.

Observations by NASA's Hubble and Spitzer space telescopes revealed measured densities of Kepler-138 c & d, suggesting the two inner super-Earths are much lighter than expected and probably have very significant water oceans. Details about these results, as well as Kepler-138 e, are in Piaulet et al. 2022 and NASA's news.

The other new planets this week are OGLE-2006-BLG-284L A b, KMT-2021-BLG-1077L b, KMT-2021-BLG-1077L c, MOA-2020-BLG-135L b, and TOI-1288 c.

News panel image credit: NASA, ESA, and Leah Hustak (STScI)

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