2023 Exoplanet Archive News
Sign up for Exoplanet Archive email updates
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.
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.
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: 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 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:
- OGLE-2016-BLG-1093 b
- KMT-2016-BLG-1105L b
- KMT-2017-BLG-0428L b
- KMT-2017-BLG-1003L b
- KMT-2017-BLG-1194L b
- OGLE-2017-BLG-1806L b
- OGLE-2018-BLG-0506L b
- OGLE-2018-BLG-0516L b
- OGLE-2018-BLG-0977L b
- KMT-2019-BLG-0253L b
- KMT-2019-BLG-0953L b
- KMT-2019-BLG-1042L b
- OGLE-2019-BLG-1053L b
- KMT-2019-BLG-1367L b
- OGLE-2019-BLG-1492L b
- KMT-2019-BLG-1552L b
- KMT-2019-BLG-1806L b
- KMT-2019-BLG-2974L b
- KMT-2021-BLG-0748L b
- KMT-2021-BLG-1253L b
- KMT-2021-BLG-1372L b
- KMT-2021-BLG-1391L b
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.
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: 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.
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: NASA, ESA, and Leah Hustak (STScI)
