# Three long period transiting giant planets from TESS

**Authors:** Rafael Brahm, Solène Ulmer-Moll, Melissa J. Hobson, Andrés Jordán, Thomas Henning, Trifon Trifonov, Matías I. Jones, Martin Schlecker, Nestor Espinoza, Felipe I. Rojas, Pascal Torres, Paula Sarkis, Marcelo Tala, Jan Eberhardt, Diana Kossakowski, Diego J. Muñoz, Joel D. Hartman, Gavin Boyle, Vincent Suc, François Bouchy  
**arXiv:** [2304.02139](https://arxiv.org/abs/2304.02139)  
**Date:** 2023-04-04  
**Summary page:** https://www.summarizepaper.com/en/paper/2304.02139v1/

## Key points

- Researchers discovered and characterized three new transiting warm giant planets
- Planets were identified through single transit events in light curves from TESS
- Follow-up measurements confirmed their planetary nature and determined their orbital periods
- The three planets orbit slightly metal-rich late F- and early G-type stars
- First planet, TOI 4406b, has a mass of $M_P$= 0.30 $\pm$ 0.04 $M_J$, a radius of $R_P$= 1.00 $\pm$ 0.02 $R_J$, and a low eccentricity orbit (e=0.15 $\pm$ 0.05) with a period of P=30.08364 $\pm$ 0.00005 d

## Summary

In a recent study, researchers report the discovery and characterization of three new transiting warm giant planets. These planets were initially identified as presenting single transit events in the light curves generated from the full frame images of the Transiting Exoplanet Survey Satellite (TESS). Follow-up radial velocity measurements and additional light curves were used to determine their orbital periods and confirm their planetary nature. The three planets orbit slightly metal-rich late F- and early G-type stars. The first planet, TOI 4406b, has a mass of $M_P$= 0.30 $\pm$ 0.04 $M_J$, a radius of $R_P$= 1.00 $\pm$ 0.02 $R_J$, and a low eccentricity orbit (e=0.15 $\pm$ 0.05) with a period of P=30.08364 $\pm$ 0.00005 d .