TIC 237913194 b
TIC 237913194 b is a cold gas giant orbiting the G3 star TIC 237913194 in the constellation Hydrus. It lies about 998 light-years from Earth and was discovered in 2020 using the transit method.
How Big Is TIC 237913194 b?
TIC 237913194 b has a radius of 12.52 times that of Earth, or 1.12 times the radius of Jupiter. Its mass is 617 times that of Earth, giving it a density of 1.85 g/cm³ — closer to gas planets like Jupiter (1.33 g/cm³).
Is TIC 237913194 b in the Habitable Zone?
TIC 237913194 b orbits inside the inner edge of the habitable zone of TIC 237913194. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of TIC 237913194: 0.820–1.932 AU (conservative: 1.039–1.832 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 237913194 b
The equilibrium temperature of TIC 237913194 b is about 974 K (701 °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 237913194 b — one full orbit around TIC 237913194 — lasts 15.2 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.121 AU — closer to its star than Mercury is to the Sun. Its orbit is highly elliptical (eccentricity 0.57), swinging dramatically closer to and farther from its star.
How Was TIC 237913194 b Discovered?
TIC 237913194 b was discovered in 2020 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 237913194 b?
TIC 237913194 b is 998.2 light-years (306.1 parsecs) from Earth. Light arriving here tonight left the planet around the year 1028. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 17,568,320 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 237913194 b scores 0.08, ranking #4,630 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: TIC 237913194
TIC 237913194
- Spectral type
- G3
- Surface temperature
- 5,788 K (Sun: 5,772 K)
- Mass
- 1.03 M☉
- Radius
- 1.09 R☉
- Luminosity
- 1.1960 L☉
- Age
- 5.7 billion years (Sun: 4.6)
Planetary System
TIC 237913194 b is the only planet known to orbit TIC 237913194 so far.
TIC 237913194 b — Complete Data
| Radius | 12.520 Earth radii (1.117 Jupiter radii) |
|---|---|
| Mass | 617.23 Earth masses (1.942 Jupiter masses) |
| Density | 1.85 g/cm³ (Earth: 5.51) |
| Orbital period | 15.17 days |
| Orbital distance | 0.121 AU |
| Eccentricity | 0.575 |
| Equilibrium temperature | 974 K (701 °C) |
| Earth Similarity Index | 0.08 |
| Distance from Earth | 998.2 light-years (306.1 parsecs) |
| Constellation | Hydrus |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2020 |
Data: NASA Exoplanet Archive, last updated 2020-12-10. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About TIC 237913194 b
Is TIC 237913194 b habitable?
No — TIC 237913194 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is TIC 237913194 b?
TIC 237913194 b is about 998 light-years from Earth in the constellation Hydrus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 17,568,320 years to get there.
How big is TIC 237913194 b compared to Earth?
TIC 237913194 b has 12.52 times the radius of Earth and about 617 times its mass.
How long is a year on TIC 237913194 b?
One orbit around TIC 237913194 takes 15.2 Earth days — short enough that 24 of its years would fit into one Earth year.
Explore TIC 237913194 b in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
