![CH Ind timing and inference. Top: the six differential nodes 𝐷 from equation (1); subtracting primary and secondary O–C values removes their common ephemeris or LTTE trend and isolates the first-order apsidal signal. Bottom: Monte Carlo posteriors for the displayed 0.08-dex common log 𝑘2 systematic; horizontal segments show central 68 per cent intervals.-- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/Stellar-Tidal.png?resize=1200%2C718&ssl=1)
[astro-ph.EP] Thornton et al. (2026) reported 27 non-transiting circumbinary-planet candidates from excess apsidal motion in TESS eclipsing-binary timings. The classical stellar contribution is sensitive to target-specific radii, apsidal constants k2, […]
circumbinary planet
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Press Release, Stellar Cartography
Tatooine-Class Planet Discovered Orbiting Two Suns
There’s so little we know about circumbinary planets – planets that orbit two stars instead of one – that they can feel like the stuff of fantasy.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Finding Circumbinary Planets: A Semi-Automated Transit Search of TESS Eclipsing Binaries
The discovery of circumbinary planets (CBPs) has advanced our understanding of planet formation and dynamical evolution in complex environments.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Gaia Mission, Habitable Zones, Imaging & Spectroscopy, Status Report
Predicting Gaia Astrometry’s Ability To Constrain The Populations Of Circumbinary Planets
The coming data releases of Gaia are expected to result in an upheaval of exoplanet science, in particular for long period giant planets (0.2MJ≤M≤25MJ). One class of exoplanets which Gaia […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Press Release, Science Fiction, Stellar Cartography
Why Are Tatooine Planets Rare? Blame General Relativity
Of the more than 4,500 stars known to have planets, one puzzling statistic stands out. Even though nearly all stars are expected to have planets and most stars form in […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Detection of 27 Candidate Circumbinary Planets Through Apsidal Precession of Eclipsing Binaries Observed by TESS
Most circumbinary planets have been discovered by their transits, limiting our understanding of such systems to those with mutually coplanar architectures. This bias makes it difficult to infer the true […]
Posted inExoplanets, -moons, -comets, Habitable Zones, Status Report, Stellar Cartography
Precise Physical Parameters, Habitability, and Orbital Stability of Sun-like SB2 Systems: HD 130669, HD 184467, HD 191854, and HD 214222
Circumbinary stability curves for the four binary systems HD 130669, HD 184467, HD 191854, and HD 214222. The curves show the critical semimajor axis acr of a stable circumbinary planet […]
Posted inAstropharmacy / Biotechnology, Brown Dwarfs, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, Stellar Cartography
Evidence For A Polar Circumbinary Exoplanet Orbiting A Pair Of Eclipsing Brown Dwarfs
One notable example of exoplanet diversity is the population of circumbinary planets, which orbit around both stars of a binary star system.
Posted inBiogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Status Report, Stellar Cartography
Planetary Rhythms: Synchronous Circulation On Variably Irradiated Asynchronous Planets
Tidal locking of planets to their host stars results in an atmospheric circulation with a hotspot fixed to the frame of reference of the planet. On the other hand, asynchronously […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Gas Giants, Imaging & Spectroscopy, Status Report
Exomoons Of Circumbinary Planets
Exomoon discovery is on the horizon. Although several exomoon candidates exist around single stars, there are currently no candidates around circumbinary planets (CBPs).