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.

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.

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.

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.

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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