TIC 77552382 b
TIC 77552382 b is a Neptune-like planet orbiting TIC 77552382 in the constellation Sextans. It lies about 1,218 light-years from Earth and was discovered in 2026 using the transit method.
How Big Is TIC 77552382 b?
TIC 77552382 b has a radius of 5.69 times that of Earth, or 0.51 times the radius of Jupiter.
Is TIC 77552382 b in the Habitable Zone?
The position of TIC 77552382 b relative to the habitable zone of TIC 77552382 cannot be precisely determined from the available orbital data.
Habitable zone of TIC 77552382: 0.517–1.250 AU (conservative: 0.655–1.185 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 ›
Orbit and Year Length
A year on TIC 77552382 b — one full orbit around TIC 77552382 — lasts 3.51 Earth days, shorter than Mercury's 88-day year.
How Was TIC 77552382 b Discovered?
TIC 77552382 b was discovered in 2026 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 77552382 b?
TIC 77552382 b is 1,217.9 light-years (373.4 parsecs) from Earth. Light arriving here tonight left the planet about 1,218 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 21,435,040 years to make the journey.
The Host Star: TIC 77552382
TIC 77552382
- Surface temperature
- 4,981 K (Sun: 5,772 K)
- Radius
- 0.89 R☉
Planetary System
TIC 77552382 b is the only planet known to orbit TIC 77552382 so far.
TIC 77552382 b — Complete Data
| Radius | 5.692 Earth radii (0.508 Jupiter radii) |
|---|---|
| Orbital period | 3.51 days |
| Distance from Earth | 1,217.9 light-years (373.4 parsecs) |
| Constellation | Sextans |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2026 |
Data: NASA Exoplanet Archive, last updated 2026-04-23. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TIC 77552382 b
Is TIC 77552382 b habitable?
TIC 77552382 b is not known to orbit within the habitable zone of TIC 77552382, and as a Neptune-like planet it is an unlikely candidate for life as we know it.
How far away is TIC 77552382 b?
TIC 77552382 b is about 1,218 light-years from Earth in the constellation Sextans. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 21,435,040 years to get there.
How big is TIC 77552382 b compared to Earth?
TIC 77552382 b has 5.69 times the radius of Earth.
How long is a year on TIC 77552382 b?
One orbit around TIC 77552382 takes 3.5 Earth days — short enough that 104 of its years would fit into one Earth year.
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