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The TESS-Keck Survey

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Exoplanet search project

The TESS-Keck Survey or TKS is an exoplanet search project that uses the Keck I and the Automated Planet Finder (APF) to conduct ground-based follow-up of planet candidates discovered by the Transiting Exoplanet Survey Satellite. The TKS aims to measure the mass for about 100 exoplanets and has been awarded some of the largest time allocations in the histories of Keck I and APF. The program has four main science themes:

  1. the bulk compositions of small planets
  2. dynamical temperatures and system architectures
  3. a larger, more refined sample for future atmospheric studies
  4. planets orbiting evolved stars

List of discoveries

Name Class Radius

(R🜨)

Mass

(ME)

Bulk density

(g/cm)

Orbital period

(days)

Discovery year Note Reference
HD 332231 b warm sub-Saturn 9.744 76.32 0.464 18.71 2020
TOI-561 b super-earth 1.45 3.2 5.5 0.44 2021 old metal-poor host star
TOI-561 c sub-Neptune 2.90 6.5 1.6 10.8 2021 old metal-poor host star
TOI-561 d sub-Neptune 2.32 2.4 1.3 16.4 2021 metal-poor host star
HD 63935 b sub-Neptune 2.99 10.8 2.2 9.06 2021
HD 63935 c sub-Neptune 2.90 11.1 2.5 21.40 2021
HIP-97166 b sub-Neptune 2.7 20 5.3 10.3 2021 eccentric orbit
HIP-97166 c sub-Neptune 10 16.8 2021 eccentric orbit
TOI-2180 b giant planet 11.3 890.4 3.32 260.8 2022 originally found by citizen scientists of Planet Hunters, planet with eccentric orbit
HD 191939 e warm Saturn 108 101.5 2022 study also announced the mass of the other planets
HD 191939 f giant planet ≥630 1700-7200 2022 candidate
TOI-1444 b super-earth 1.4 3.87 0.47 2021
TOI-1444 c 11.8 16 2021 candidate
TOI-1246 e >25.6 93.8 2022 candidate, study also announced the mass of the other planets
TOI-1272 b hot Neptune 4.1 25 1.9 3.3 2022 eccentric orbit
TOI-1272 c 27 8.7 2022
TOI-1669 c giant planet 191 501 2022 planet b is a close-in small planet (about 4 ME)
TOI-1694 c giant planet 295 393 2022 planet b is a close-in small planet (31 ME)
HIP 8152 b (TOI-266) sub-Neptune 2.6 7.8 2.5 10.75 2023
HIP 8152 c sub-Neptune 2.5 9.4 3.4 19.61 2023
HD 42813 b (TOI-469) sub-Neptune 3.4 5.8 0.8 13.63 2023 star is metal-rich, planet has relative low density
HD 25463 b (TOI-554) sub-Neptune 2.6 8.5 2.6 7.05 2023
HD 25463 c super-Earth 1.5 <4.1 <7.1 3.04 2023
TOI-669 b hot sub-Neptune 2.6 9.8 3.0 3.95 2023
HD 135694 b (TOI-1247) warm sub-Neptune 2.51 5.7 2.0 15.92 2023
HD 6061 b (TOI-1473) hot sub-Neptune 2.45 10.8 4.0 5.25 2023
TOI-1736 b sub-Neptune 3.1 11.9 2.3 7.07 2023 star is a subgiant
TOI-1736 c temperature super-Jovian >2477 571.3 2023 not transiting, in a moderately eccentric orbit
TOI-1386 b warm sub-Saturn 6.05 47 1.16 25.84 2024 orbits a solar analogue
TOI-1386 c >98 227.6 2024 not transiting
TOI-1347 b ultra-short period planet 1.8 11.1 9.9 0.85 2024 possible high molecular weight atmosphere
TOI-1347 c 1.6 <6.4 <4.1 4.84 2024
TOI-329 b Neptune size 4.72 40.8 2.13 5.70 2024 old subgiant host star; moderate eccentric orbit e=0.39
HD 39688 b (TOI-480) Earth-density 2.69 15.7 4.42 6.86 2024
TOI-603 b 7.93 47.5 0.52 16.17 2024 subgiant host star
TOI-1199 b giant planet 10.60 69.4 0.32 3.67 2024
TOI-1294 b Saturn-sized 9.19 62.2 0.44 3.91 2024 massive metal-rich host star
TOI-1294 c 148.3 160.1 2024 not transiting
TOI-1439 b Neptune-sized 4.15 38.4 2.94 27.64 2024 metal-rich subgiant host star
TOI-1605 b Jupiter-sized 10.34 221.3 8.70 2024 solar-like metallicity host star; eccentric orbit e=0.28
TOI-1828 b hot Jupiter 8.62 58.5 0.50 9.09 2024 subgiant host star; eccentric orbit e=0.31
HD 148193 b (TOI-1836) 8.38 28.4 0.27 20.38 2024 young and hot subgiant host star
TOI-1885 b giant planet 13.66 516.4 1.12 6.54 2024 young and hot host star
HD 83342 b (TOI-1898) warm Jupiter 9.74 127.5 0.76 45.52 2024 CTOI of Planet Hunters: TESS; highly eccentric orbit e=0.48
TOI-2019 b 5.66 34.6 1.05 15.34 2024 cool metal-rich subgiant host star
TOI-1736 c 2477 571.3 2024 eccentric orbit e=0.37
TOI-1751 b sub-Neptune 2.77 14.5 3.6 37.47 2024 slightly evolved solar-type metal-poor star

Follow-up works by TKS studied the already discovered planets TOI-1726 c and WASP-107b.

References

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