Stellar catalog: Discover the nearby universe

Stellar catalog: Discover the nearby universe Database of nearby stars and planets in Milky Way. Current news from astronomy and stellar research.

🪐TOI-3884 b shows changing, asymmetric transits caused by recurring starspot crossings on its fully convective ⭐️red dwa...
05/09/2025

🪐TOI-3884 b shows changing, asymmetric transits caused by recurring starspot crossings on its fully convective ⭐️red dwarf host star. Precise spin–orbit angles reveal a tilted system, key for probing planet formation around low-mass stars https://www.stellarcatalog.com/study.php?studyID=101746

New observations reveal the star⭐️TOI-1438 hosts two short-period sub-Neptunes (3.0 and 2.8 Earth radii) with volatile-r...
01/09/2025

New observations reveal the star⭐️TOI-1438 hosts two short-period sub-Neptunes (3.0 and 2.8 Earth radii) with volatile-rich interiors. Radial velocity data hints at a distant Jupiter-like planet, though stellar activity may mimic the signal
📄 https://www.stellarcatalog.com/study.php?studyID=101734

Very cold sub-stellar Y-dwarf ⭐️CWISEP J1935-1546 has even smaller and colder companion. This makes it only the second k...
26/08/2025

Very cold sub-stellar Y-dwarf ⭐️CWISEP J1935-1546 has even smaller and colder companion. This makes it only the second known Y+Y binary. Estimated masses are 12-39 Jupiter masses for primary and 7-24 for secondary
📄 https://www.stellarcatalog.com/study.php?studyID=101728

Two warm Earth-sized planets and one candidate orbit in the compact ⭐️⭐️TOI-2267 binary star. It is likely that planets ...
21/08/2025

Two warm Earth-sized planets and one candidate orbit in the compact ⭐️⭐️TOI-2267 binary star. It is likely that planets b and c orbit one of the stars while the candidate orbits the other - very rare combination
https://www.stellarcatalog.com/study.php?studyID=101721

Super-Earth exoplanet🪐Gliese 3929 b shows no signs of a thick atmosphere in new JWST eclipse data. Its 782 K temperature...
19/08/2025

Super-Earth exoplanet🪐Gliese 3929 b shows no signs of a thick atmosphere in new JWST eclipse data. Its 782 K temperature dayside matches a bare rock surface. Two more non-transiting planets appear in the system
📄 https://www.stellarcatalog.com/study.php?studyID=101718

James Webb telescope reveals disequilibrium chemistry in the cold Y brown dwarf WISE 1738+2732. CO and CO₂ detected alon...
28/07/2025

James Webb telescope reveals disequilibrium chemistry in the cold Y brown dwarf WISE 1738+2732. CO and CO₂ detected alongside CH₄, H₂O, and NH₃ hint at dynamic, planet-like atmospheres in 400 K substellar objects

📄 https://www.stellarcatalog.com/study.php?studyID=101698

🪐TOI-201 c, a massive planet on a 7.7-year orbit, was first revealed by timing variations of transits of its inner sibli...
23/07/2025

🪐TOI-201 c, a massive planet on a 7.7-year orbit, was first revealed by timing variations of transits of its inner sibling TOI-201 b. Later transit confirmed it—one of the longest-period transiting giant planets known
📄 https://www.stellarcatalog.com/study.php?studyID=101699

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