TOI-2295 b
TOI-2295 b is a cold gas giant orbiting TOI-2295 in the constellation Draco. It lies about 412 light-years from Earth and was discovered in 2024 using the transit method.
How Big Is TOI-2295 b?
TOI-2295 b has a radius of 16.48 times that of Earth, or 1.47 times the radius of Jupiter. Its mass is 278 times that of Earth, giving it a density of 0.34 g/cm³ — closer to gas planets like Jupiter (1.33 g/cm³).
Is TOI-2295 b in the Habitable Zone?
TOI-2295 b orbits inside the inner edge of the habitable zone of TOI-2295. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TOI-2295: 1.080–2.548 AU (conservative: 1.368–2.416 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Temperature on TOI-2295 b
The equilibrium temperature of TOI-2295 b is about 747 K (474 °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-2295 b — one full orbit around TOI-2295 — lasts 30.0 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.199 AU — closer to its star than Mercury is to the Sun. Its orbit is highly elliptical (eccentricity 0.33), swinging dramatically closer to and farther from its star.
How Was TOI-2295 b Discovered?
TOI-2295 b was discovered in 2024 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-2295 b?
TOI-2295 b is 411.9 light-years (126.3 parsecs) from Earth. Light arriving here tonight left the planet around the year 1615. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 7,249,440 years to make the journey.
The Host Star: TOI-2295
TOI-2295
- Surface temperature
- 5,730 K (Sun: 5,772 K)
- Mass
- 1.17 M☉
- Radius
- 1.46 R☉
- Luminosity
- 2.0600 L☉
- Age
- 10.5 billion years (Sun: 4.6)
The TOI-2295 Planetary System
TOI-2295 b is one of 2 known planets in the TOI-2295 system. Its siblings:
- TOI-2295 c (Cold Gas Giant)
TOI-2295 b — Complete Data
| Radius | 16.477 Earth radii (1.470 Jupiter radii) |
|---|---|
| Mass | 278.10 Earth masses (0.875 Jupiter masses) |
| Density | 0.34 g/cm³ (Earth: 5.51) |
| Orbital period | 30.03 days |
| Orbital distance | 0.199 AU |
| Eccentricity | 0.334 |
| Equilibrium temperature | 747 K (474 °C) |
| Distance from Earth | 411.9 light-years (126.3 parsecs) |
| Constellation | Draco |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2024 |
Data: NASA Exoplanet Archive, last updated 2025-03-03. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TOI-2295 b
Is TOI-2295 b habitable?
No — TOI-2295 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TOI-2295 b?
TOI-2295 b is about 412 light-years from Earth in the constellation Draco. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 7,249,440 years to get there.
How big is TOI-2295 b compared to Earth?
TOI-2295 b has 16.48 times the radius of Earth and about 278 times its mass.
How long is a year on TOI-2295 b?
One orbit around TOI-2295 takes 30.0 Earth days — short enough that 12 of its years would fit into one Earth year.
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