TIC 257060897 b
TIC 257060897 b is a hot Jupiter orbiting the F star TIC 257060897 in the constellation Ursa Minor. It lies about 1,649 light-years from Earth and was discovered in 2021 using the transit method.
How Big Is TIC 257060897 b?
TIC 257060897 b has a radius of 17.26 times that of Earth, or 1.54 times the radius of Jupiter. Its mass is 202 times that of Earth, giving it a density of 0.22 g/cm³ — closer to gas planets like Jupiter (1.33 g/cm³).
Is TIC 257060897 b in the Habitable Zone?
TIC 257060897 b orbits inside the inner edge of the habitable zone of TIC 257060897. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TIC 257060897: 1.487–3.485 AU (conservative: 1.883–3.304 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 257060897 b
The equilibrium temperature of TIC 257060897 b is about 1,775 K (1,502 °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 257060897 b — one full orbit around TIC 257060897 — lasts 3.66 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.049 AU — closer to its star than Mercury is to the Sun. Its orbit is nearly circular (eccentricity 0.039).
How Was TIC 257060897 b Discovered?
TIC 257060897 b was discovered in 2021 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 257060897 b?
TIC 257060897 b is 1,649.4 light-years (505.7 parsecs) from Earth. Light arriving here tonight left the planet about 1,649 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 29,029,440 years to make the journey.
Earth Similarity Index
The Earth Similarity Index (ESI) scores how physically similar a planet is to Earth, from 0 to 1, based on radius, density, escape velocity and surface temperature. TIC 257060897 b scores 0.06, ranking #5,226 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: TIC 257060897
TIC 257060897
- Spectral type
- F
- Surface temperature
- 5,993 K (Sun: 5,772 K)
- Mass
- 1.19 M☉
- Radius
- 1.86 R☉
- Luminosity
- 4.0300 L☉
- Age
- 5.6 billion years (Sun: 4.6)
Planetary System
TIC 257060897 b is the only planet known to orbit TIC 257060897 so far.
TIC 257060897 b — Complete Data
| Radius | 17.262 Earth radii (1.540 Jupiter radii) |
|---|---|
| Mass | 201.50 Earth masses (0.634 Jupiter masses) |
| Density | 0.22 g/cm³ (Earth: 5.51) |
| Orbital period | 3.66 days |
| Orbital distance | 0.049 AU |
| Eccentricity | 0.039 |
| Equilibrium temperature | 1,775 K (1,502 °C) |
| Earth Similarity Index | 0.06 |
| Distance from Earth | 1,649.4 light-years (505.7 parsecs) |
| Constellation | Ursa Minor |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2021 |
Data: NASA Exoplanet Archive, last updated 2025-09-25. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TIC 257060897 b
Is TIC 257060897 b habitable?
No — TIC 257060897 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TIC 257060897 b?
TIC 257060897 b is about 1,649 light-years from Earth in the constellation Ursa Minor. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 29,029,440 years to get there.
How big is TIC 257060897 b compared to Earth?
TIC 257060897 b has 17.26 times the radius of Earth and about 202 times its mass.
How long is a year on TIC 257060897 b?
One orbit around TIC 257060897 takes 3.7 Earth days — short enough that 100 of its years would fit into one Earth year.
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