The TOI-904 System
TOI-904 is a planetary system in the constellation Mensa hosting 2 confirmed exoplanets, about 150 light-years from Earth. One of its planets orbits within the habitable zone, where liquid water could exist on a planetary surface.
Size Comparison: The Planets of TOI-904
TOI-904: Star and Habitable Zone
TOI-904
- Surface temperature
- 3,770 K (Sun: 5,772 K)
- Mass
- 0.56 M☉
- Radius
- 0.53 R☉
- Luminosity
- 0.0510 L☉
- Age
- 1.5 billion years (Sun: 4.6)
Habitable zone of TOI-904: 0.184–0.471 AU (conservative: 0.233–0.447 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
See the full interactive habitable-zone view in the Exoplanet Explorer app ›
All 2 Planets in the TOI-904 System
Discovery History
The first planet found here, TOI-904 b, was discovered in 2023 using the transit method.
Frequently Asked Questions About TOI-904
How many planets does TOI-904 have?
TOI-904 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the TOI-904 system habitable?
One planet in the system orbits within the habitable zone, where liquid water could exist. Actual habitability depends on atmospheres and composition, which are not yet known.
How far away is TOI-904?
TOI-904 is about 150 light-years from Earth in the constellation Mensa.
Explore the TOI-904 system in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
