# The TESS-Keck Survey

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:
* the bulk compositions of small planets
* dynamical temperatures and system architectures
* a larger, more refined sample for future atmospheric studies
* planets orbiting evolved stars

## List of discoveries

| Name | Class | Radius (R$_🜨$) | Mass (M$_E$) | Bulk density (g/cm$^3$) | Orbital period (days) | Discovery year | Note |
| 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 M$_E$) |
| TOI-1694 c | giant planet | | 295 | | 393 | 2022 | planet b is a close-in small planet (31 M$_E$) |
| 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.