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22. 5. 2026
Stars | ExoplaneHD 38973 is a nearby star similar to the Sun. Astronomers have discovered a planet, HD 38973 b, orbiting this star with a long period of about 2733 days, or roughly 7.5 years. The planet’s mass is estimated to be about a quarter that of Jupiter, placing it in the category of cold Saturns—planets with similar mass and temperature to Saturn in our solar system. The discovery was made using precise measurements of the star’s motion, which revealed the gravitational pull of the planet.
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22. 5. 2026StarWR 147 and HD 167971 are massive star systems where strong stellar winds collide, accelerating particles to high energies. These systems, known as particle-accelerating colliding-wind binaries (PACWBs), are expected to produce synchrotron radiation in the radio range, which should be linearly polarized. However, no such polarization has been detected so far. In this study, astronomers used the Very Large Array radio telescope to observe both syst...
Read article 21. 5. 2026Stars | ExoplaneCoRoT-2b is a young and unusual hot Jupiter, a giant planet orbiting very close to its star. Using the IGRINS spectrograph on the Gemini South telescope, scientists observed the planet’s dayside just before it passed behind its star. By analyzing the planet’s thermal emission, they detected clear signs of water vapor and carbon monoxide in its atmosphere. The water signal was found with high confidence, and the carbon monoxide was also detected, ...
Read article 21. 5. 2026Stars | Exoplanets | Brown dwarfs | TESS | SubgiTOI-5882 is a subgiant star that stands out for its unusually high lithium content. The star also hosts a massive brown dwarf companion, which can disturb the orbits of any inner planets. Theoretical models suggest that subgiant stars in a certain mass range can retain lithium signatures if they have recently swallowed a planet. To test this, researchers measured the lithium abundance in TOI-5882 using high-resolution spectra and compared it to a...
Read article 20. 5. 2026Stars | Exoplanets | Super-Earths | Habitable exoplaneGliese 3378 (GJ 3378) is a red dwarf star located just 7.7 parsecs from the Sun. It hosts a planet, Gliese 3378b, which was previously thought to be a super-Earth with a mass of about five Earth masses and an orbital period of nearly twenty-five days. New observations using several high-precision spectrographs, including HPF, NEID, CARMENES, and SPIRou, have led to a revised understanding of this planet’s properties. The updated analysis finds th...
Read article 15. 5. 2026Stars | ExoplaneLTT 1445A b is a rocky planet orbiting a red dwarf star, and astronomers are using the James Webb Space Telescope to search for signs of an atmosphere. This study introduces a new method that uses climate models and Bayesian statistics to analyze eclipse spectra, which are measurements of the planet’s heat as it passes behind its star. The method fits the observed data with models that account for the planet’s temperature and possible atmospheric...
Read article 15. 5. 2026Stars | ExoplaneLTT 1445 A b is the closest known rocky planet orbiting a red dwarf star. Scientists used the James Webb Space Telescope (JWST) to observe the planet as it passed in front of its star, measuring how starlight filtered through its atmosphere at wavelengths between three and five micrometers. Two independent data analysis methods were used to ensure the results were reliable. The observations achieved very high precision, allowing researchers to lo...
Read article 15. 5. 2026Stars | ExoplaneTRAPPIST-1 is a system of planets orbiting a low-mass star, with several planets considered potentially habitable. This study uses a version of the HEXTOR energy balance model to explore the possible climate states of these planets, focusing on those that are similar to Earth and orbit in a way that keeps the same side facing their star. The model is first tested on rapidly rotating, Earth-like planets and shows expected patterns of climate stabi...
Read article 15. 5. 2026Stars | ExoplaneHAT-P-70b is an ultra-hot Jupiter, a type of giant planet that orbits very close to its star and experiences extreme temperatures. The dayside of HAT-P-70b is so hot that many metals become ionized, while the nightside remains cool enough for some elements to condense. Using the MAROON-X high-resolution spectrograph, researchers studied the planet’s atmosphere and detected fourteen different metals, including iron, titanium, calcium, chromium, so...
Read article 15. 5. 2026Stars | Exoplanets | Super-Earths | Red dwarfs | TESS
Ross 318 (Gliese 48) is a red dwarf star with strong magnetic activity and a rotation period of about fifty-one and a half days. Researchers analyzed over a decade of radial velocity data from CARMENES and HIRES, along with TESS space telescope observations, to search for planets around this star. They discovered a planet, Ross 318 b (Gliese 48 b), which has a minimum mass about six times that of Earth and orbits the star every thirty-nine days. ...
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Recently discovered exoplanets
| EK Chamaeleontis b | 10 / 2026 | 2702.2 M⊕ | 321.3 ly | |
| HD 715 b | 10 / 2026 | 201.9 M⊕ | 542.8 ly | |
| DENIS J1253-5709 b | 10 / 2026 | 244.8 M⊕ | 54.4 ly | |
| TOI-6417 b | 09 / 2026 | 349.7 M⊕ | 1903.9 ly | |
| TOI-6443 b | 09 / 2026 | 1605.4 M⊕ | 2051.6 ly | |
| TOI-7219 b | 09 / 2026 | 661 M⊕ | 1074.2 ly | |
| TOI-4079 B b | 09 / 2026 | 1646.8 M⊕ | 1185.6 ly | |
| HD 45652 b | 09 / 2026 | 1557.7 M⊕ | 113.9 ly | |
| LSPM J0804+1116 b | 09 / 2026 | 6.4 M⊕ | 82.6 ly | |
| HR 8799 f | 09 / 2026 | 524.5 M⊕ | 133.3 ly | |
| 61 Cygni A b | 09 / 2026 | 2543.3 M⊕ | 11.4 ly | |
| TOI-5646 b | 08 / 2026 | 45.9 M⊕ | 1352.3 ly | |
| TOI-4468 c | 08 / 2026 | 11.1 M⊕ | 1233.1 ly | |
| TOI-4468 b | 08 / 2026 | 170.1 M⊕ | 1233.1 ly | |
| TOI-4468 d | 08 / 2026 | 311 M⊕ | 1233.1 ly |
Newly discovered exoplanets
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Browse the latest scientific studies on stars and exoplanets in our galaxy. Stellar Catalog provides access to scientific data from astrophysics and stellar or planetary astronomy. It's a resource for anyone interested in the newest discoveries about what lies beyond our solar system.
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