---
title: "The TOI-791 system"
url: "https://spacecatalog.org/system/toi-791"
release: "DR1"
licence: "No licence stated; acknowledgement requested"
citation: "This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Cite Christiansen et al. (2025), Planetary Science Journal (doi:10.3847/PSJ/ade3c2), and the literature reference given with each value."
---

# The TOI-791 system

TOI-791 is an F7 yellow-white star in Volans, 1113 ly away, with 2 known planets. Their orbits run from 0.602 to 0.863 AU. All of them were detected by transit.

## The planets, innermost first

| Planet | Orbit (AU) | Period | Radius | Mass | Equilibrium T |
| --- | --- | --- | --- | --- | --- |
| [b](https://spacecatalog.org/object/toi-791-b) | 0.602 | 139.3 d | 11.13 R⊕ | 9.5 M⊕ | 434 K |
| [c](https://spacecatalog.org/object/toi-791-c) | 0.863 | 232 d | 12.95 R⊕ | 18.6 M⊕ | 363 K |

Every figure is the planet's composite parameter from the [NASA Exoplanet Archive (Planetary Systems Composite Parameters)](https://exoplanetarchive.ipac.caltech.edu/cgi-bin/TblView/nph-tblView?app=ExoTbls&config=PSCompPars), one consistent set per world. Semi-major axes are orbits about the star, not distances from Earth.

This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Cite Christiansen et al. (2025), Planetary Science Journal (doi:10.3847/PSJ/ade3c2), and the literature reference given with each value.

## The host star

| Quantity | Value |
| --- | --- |
| CLASS | F7 yellow-white star |
| SPECTRAL TYPE | F7 |
| MASS | 1.28 M☉ |
| RADIUS | 1.474 R☉ |
| SURFACE TEMPERATURE | 6294 K |
| LUMINOSITY | 3.07 L☉ |
| DISTANCE FROM EARTH | 1113 ly |
| APPARENT MAGNITUDE | 11.09 |
| CONSTELLATION | Volans |
| STARS IN SYSTEM | 1 |

The star itself: https://spacecatalog.org/object/toi-791

The page itself, with the orbits drawn: https://spacecatalog.org/system/toi-791