TOI-2719 b
TOI-2719 b is a Neptune-like planet orbiting TOI-2719 in the constellation Eridanus. It lies about 1,919 light-years from Earth and was discovered in 2025 using the transit method.
How Big Is TOI-2719 b?
TOI-2719 b has a radius of 5.98 times that of Earth, or 0.53 times the radius of Jupiter.
Is TOI-2719 b in the Habitable Zone?
The position of TOI-2719 b relative to the habitable zone of TOI-2719 cannot be precisely determined from the available orbital data.
Habitable zone of TOI-2719: 1.262–2.976 AU (conservative: 1.599–2.821 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 ›
Temperature on TOI-2719 b
The equilibrium temperature of TOI-2719 b is about 1,710 K (1,437 °C) — hot enough to melt many metals. This estimate ignores any atmosphere, which could change surface temperatures dramatically — Earth's greenhouse effect adds about 33 °C.
Orbit and Year Length
A year on TOI-2719 b — one full orbit around TOI-2719 — lasts 3.38 Earth days, shorter than Mercury's 88-day year.
How Was TOI-2719 b Discovered?
TOI-2719 b was discovered in 2025 using the transit method, with observations from Transiting Exoplanet Survey Satellite (TESS).
The transit method watches a star for the tiny, regular dip in brightness that occurs when a planet crosses in front of it. The depth and timing of these dips reveal the planet's size and orbital period.
How Far Away Is TOI-2719 b?
TOI-2719 b is 1,919.0 light-years (588.4 parsecs) from Earth. Light arriving here tonight left the planet about 1,919 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 33,774,400 years to make the journey.
The Host Star: TOI-2719
TOI-2719
- Surface temperature
- 5,762 K (Sun: 5,772 K)
- Mass
- 1.02 M☉
- Radius
- 1.69 R☉
Planetary System
TOI-2719 b is the only planet known to orbit TOI-2719 so far.
TOI-2719 b — Complete Data
| Radius | 5.980 Earth radii (0.534 Jupiter radii) |
|---|---|
| Orbital period | 3.38 days |
| Equilibrium temperature | 1,710 K (1,437 °C) |
| Distance from Earth | 1,919.0 light-years (588.4 parsecs) |
| Constellation | Eridanus |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2025 |
Data: NASA Exoplanet Archive, last updated 2025-08-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-2719 b
Is TOI-2719 b habitable?
TOI-2719 b is not known to orbit within the habitable zone of TOI-2719, and as a Neptune-like planet it is an unlikely candidate for life as we know it.
How far away is TOI-2719 b?
TOI-2719 b is about 1,919 light-years from Earth in the constellation Eridanus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 33,774,400 years to get there.
How big is TOI-2719 b compared to Earth?
TOI-2719 b has 5.98 times the radius of Earth.
How long is a year on TOI-2719 b?
One orbit around TOI-2719 takes 3.4 Earth days — short enough that 108 of its years would fit into one Earth year.
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