TIC 88785435 b
TIC 88785435 b is a Neptune-like planet orbiting the K7 V star TIC 88785435 in the constellation Centaurus. It lies about 399 light-years from Earth and was discovered in 2025 using the transit method.
How Big Is TIC 88785435 b?
TIC 88785435 b has a radius of 5.03 times that of Earth.
Is TIC 88785435 b in the Habitable Zone?
TIC 88785435 b orbits inside the inner edge of the habitable zone of TIC 88785435. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TIC 88785435: 0.354–0.896 AU (conservative: 0.448–0.849 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 TIC 88785435 b
The equilibrium temperature of TIC 88785435 b is about 635 K (362 °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 TIC 88785435 b — one full orbit around TIC 88785435 — lasts 10.5 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.084 AU — closer to its star than Mercury is to the Sun. Its orbit is mildly elliptical (eccentricity 0.13).
How Was TIC 88785435 b Discovered?
TIC 88785435 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 TIC 88785435 b?
TIC 88785435 b is 399.2 light-years (122.4 parsecs) from Earth. Light arriving here tonight left the planet around the year 1627. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 7,025,920 years to make the journey.
The Host Star: TIC 88785435
TIC 88785435
- Spectral type
- K7 V
- Surface temperature
- 3,998 K (Sun: 5,772 K)
- Mass
- 0.72 M☉
- Radius
- 0.91 R☉
- Age
- 0.0 billion years (Sun: 4.6)
Planetary System
TIC 88785435 b is the only planet known to orbit TIC 88785435 so far.
TIC 88785435 b — Complete Data
| Radius | 5.030 Earth radii (0.449 Jupiter radii) |
|---|---|
| Orbital period | 10.51 days |
| Orbital distance | 0.084 AU |
| Eccentricity | 0.131 |
| Equilibrium temperature | 635 K (362 °C) |
| Distance from Earth | 399.2 light-years (122.4 parsecs) |
| Constellation | Centaurus |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2025 |
Data: NASA Exoplanet Archive, last updated 2025-07-17. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TIC 88785435 b
Is TIC 88785435 b habitable?
No — TIC 88785435 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TIC 88785435 b?
TIC 88785435 b is about 399 light-years from Earth in the constellation Centaurus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 7,025,920 years to get there.
How big is TIC 88785435 b compared to Earth?
TIC 88785435 b has 5.03 times the radius of Earth.
How long is a year on TIC 88785435 b?
One orbit around TIC 88785435 takes 10.5 Earth days — short enough that 35 of its years would fit into one Earth year.
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