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Stellar Brief: 21. 10. 2026
TOI-3686 is the only known hot-Jupiter system in a true 2:1 orbital resonance: its outer planet takes almost exactly twice as long to circle its star as the inner planet.
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Latest astronomy Новости
20. 10. 2023 (Принял)
Звезды | Экзопланеты | TESSA temperate, highly eccentric sub-Saturn has been discovered orbiting the bright K-dwarf TOI-2134, in addition to an inner mini-Neptune that was discovered three years ago. The outer planet has a radius of 7.27 R⊕ and a mass of 41.86 M⊕, and a high eccentricity of 0.67, positioning it in the habitable zone of its system for part of its orbit. Further observations are needed to fully constrain the orbit of the outer planet and to study the spin-orbit architecture of the system. ...
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18. 10. 2023 (Принял)Звезды | TESS | ЭкзопланетыThe planet has more than 3 Earth radii and a 16 Earth masses, suggesting a likely volatile-rich planet. Transit timing variations in the system suggest the presence of an outer planet candidate near a 2:1 resonance, with a mass of 6.8 Earths. Further observations are needed to explicitly identify the resonance and further characterize the properties of the system....
Read article 11. 10. 2023 (Принял)Звезды | ЭкзопланетыA new analysis of exo-Neptune transmission spectra reveals that these planets have very cloudy atmospheres and high metallicity. Colder exo-Neptunes may have clearer atmospheres, making them better targets for future studies and the search for life beyond Earth...
Read article 9. 10. 2023 (Принял)Звезды | ЭкзопланетыBoth planets have short periods and relatively low masses, but Gliese 724 b is the most eccentric single exoplanet yet discovered around an M dwarf....
Read article 9. 10. 2023 (Принял)Звезды | Экзопланеты | Белые карликиAstrometric planet candidates around white dwarfs can be confirmed and characterized by combining astrometric data with spectroscopic and photometric data. Radial velocity and infrared photometry can be used to probe the mass of the objects producing some of the astrometric signals, and rule out parts of the brown dwarf and planet mass parameter space....
Read article 5. 10. 2023 (Принял)Звезды | Экзопланеты | Kepler | ЭкзолуныExoplanet Kepler 1513 b was discovered in 2016. Observed transit timing variations were thought to be originating in planet-moon interaction. New observations show that better explanation for the variations is an existence of a second, non-transiting planet in the system....
Read article 5. 10. 2023 (Принял)ЗвездыStudy of 66 stars with planets and planet candidates found that those with stellar companions have more false positive planet detections and shorter orbital periods for their planets. This suggests that stellar companions can truncate planet-forming disks and affect planet formation....
Read article 5. 10. 2023 (Принял)ЗвездыJWST has observed the atmosphere of HD 209458b, a hot Jupiter exoplanet. The observations reveal that the planet has a super-solar metallicity and a very low C/O ratio, suggesting that it has undergone significant contamination by evaporating planetesimals while migrating inward....
Read article 2. 10. 2023 (Принял)ЗвездыK-dwarf star HD 141399 is about 120 light years away and there are 4 known exoplanets orbiting it. All of them are gas giants similar to Jupiter and one is suspected to reside in the habitable zone of the star....
Read article 26. 9. 2023 (Принял)Звезды | Экзопланеты | TESSThe planet closer to the star is the first warm exo-Saturn with a precisely determined mass and radius...
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Недавно обнаруженные экзопланеты
| 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 | |
| TIC 219893931 b | 09 / 2026 | 8.9 M⊕ | 1319.5 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 |
Newly discovered exoplanets
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