Two Earth-size Planets and an Earth-size Candidate Transiting the nearby Star HD 101581* Article Swipe

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Michelle Kunimoto , Zifan Lin , Sarah Millholland , Alexander Venner , Natalie R. Hinkel , Avi Shporer , Andrew Vanderburg , Jeremy Bailey , Rafael Brahm , Jennifer Burt , R. Paul Butler , Brad Carter , David R. Ciardi , Karen A. Collins , Kevin I. Collins , Knicole D. Colón , Jeffrey D. Crane , Tansu Daylan , Matías R. Díaz , J. Doty , Fabo Feng , E. W. Guenther , Jonathan Horner , Steve B. Howell , Ján Janík , H. R. A. Jones , P. Kábath , Shubham Kanodia , Colin Littlefield , H. P. Osborn , S. J. O’Toole , Martin Paegert , Pavel Pintr , Richard P. Schwarz , Stephen A. Shectman , Gregor Srdoč , Keivan G. Stassun , Johanna Teske , Joseph D. Twicken , L. Vanzi , Sharon X. Wang , Robert A. Wittenmyer , Jon M. Jenkins , G. Ricker , Sara Seager , Joshua N. Winn ·

YOU? · · 2024 · Open Access · · DOI: https://doi.org/10.3847/1538-3881/ad9266

We report the validation of multiple planets transiting the nearby ( d = 12.8 pc) K5V dwarf HD 101581 (GJ 435, TOI–6276, TIC 397362481). This system consists of at least two Earth-size planets whose orbits are near a mutual 4:3 mean-motion resonance, HD 101581 b ( , P = 4.47 days) and HD 101581c ( , P = 6.21 days). Both planets were discovered in Sectors 63 and 64 TESS observations and statistically validated with supporting ground-based follow-up. We also identify a signal that probably originates from a third transiting planet, TOI-6276.03 ( , P = 7.87 days). These planets are remarkably uniform in size and their orbits are evenly spaced, representing a prime example of the “peas-in-a-pod” architecture seen in other compact multiplanet systems. At V = 7.77, HD 101581 is the brightest star known to host multiple transiting planets smaller than 1.5 R ⊕ . HD 101581 is a promising system for atmospheric characterization and comparative planetology of small planets.

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Type: article
Language: en
Landing Page: https://doi.org/10.3847/1538-3881/ad9266
OA Status: gold
Cited By: 1
References: 168
Related Works: 10
OpenAlex ID: https://openalex.org/W4405704076

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DOI: https://doi.org/10.3847/1538-3881/ad9266

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Title: Two Earth-size Planets and an Earth-size Candidate Transiting the nearby Star HD 101581*

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Publication year: 2024

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Publication date: 2024-12-20

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Authors: Michelle Kunimoto, Zifan Lin, Sarah Millholland, Alexander Venner, Natalie R. Hinkel, Avi Shporer, Andrew Vanderburg, Jeremy Bailey, Rafael Brahm, Jennifer Burt, R. Paul Butler, Brad Carter, David R. Ciardi, Karen A. Collins, Kevin I. Collins, Knicole D. Colón, Jeffrey D. Crane, Tansu Daylan, Matías R. Díaz, J. Doty, Fabo Feng, E. W. Guenther, Jonathan Horner, Steve B. Howell, Ján Janík, H. R. A. Jones, P. Kábath, Shubham Kanodia, Colin Littlefield, H. P. Osborn, S. J. O’Toole, Martin Paegert, Pavel Pintr, Richard P. Schwarz, Stephen A. Shectman, Gregor Srdoč, Keivan G. Stassun, Johanna Teske, Joseph D. Twicken, L. Vanzi, Sharon X. Wang, Robert A. Wittenmyer, Jon M. Jenkins, G. Ricker, Sara Seager, Joshua N. Winn

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Landing page: https://doi.org/10.3847/1538-3881/ad9266

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Concepts: Algorithm, Computer science

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Cited by: 1

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