HATS-67 b
HATS-67 b is a hot Jupiter orbiting HATS-67 in the constellation Centaurus. It lies about 3,132 light-years from Earth and was discovered in 2018 using the transit method.
How Big Is HATS-67 b?
HATS-67 b has a radius of 18.89 times that of Earth, or 1.69 times the radius of Jupiter. Its mass is 461 times that of Earth, giving it a density of 0.37 g/cm³ — closer to gas planets like Jupiter (1.33 g/cm³).
Is HATS-67 b in the Habitable Zone?
HATS-67 b orbits inside the inner edge of the habitable zone of HATS-67. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of HATS-67: 1.341–3.108 AU (conservative: 1.698–2.947 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Temperature on HATS-67 b
The equilibrium temperature of HATS-67 b is about 2,193 K (1,920 °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. It receives 3,821 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on HATS-67 b — one full orbit around HATS-67 — lasts just 38.6 hours, shorter than Mercury's 88-day year. It orbits at an average distance of 0.030 AU — closer to its star than Mercury is to the Sun. Its orbit is mildly elliptical (eccentricity 0.06).
How Was HATS-67 b Discovered?
HATS-67 b was discovered in 2018 using the transit method, with observations from HATSouth.
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 HATS-67 b?
HATS-67 b is 3,131.5 light-years (960.1 parsecs) from Earth. Light arriving here tonight left the planet about 3,132 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 55,114,400 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. HATS-67 b scores 0.05, ranking #5,288 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HATS-67
HATS-67
- Surface temperature
- 6,594 K (Sun: 5,772 K)
- Mass
- 1.44 M☉
- Radius
- 1.44 R☉
- Luminosity
- 3.5200 L☉
- Age
- 0.5 billion years (Sun: 4.6)
Planetary System
HATS-67 b is the only planet known to orbit HATS-67 so far.
HATS-67 b — Complete Data
| Radius | 18.887 Earth radii (1.685 Jupiter radii) |
|---|---|
| Mass | 460.85 Earth masses (1.450 Jupiter masses) |
| Density | 0.37 g/cm³ (Earth: 5.51) |
| Orbital period | 1.61 days |
| Orbital distance | 0.030 AU |
| Eccentricity | 0.057 |
| Equilibrium temperature | 2,193 K (1,920 °C) |
| Stellar irradiation | 3,821.00× Earth |
| Earth Similarity Index | 0.05 |
| Distance from Earth | 3,131.5 light-years (960.1 parsecs) |
| Constellation | Centaurus |
| Discovery method | Transit |
| Discovery facility | HATSouth |
| Discovery year | 2018 |
Data: NASA Exoplanet Archive, last updated 2024-07-12. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HATS-67 b
Is HATS-67 b habitable?
No — HATS-67 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is HATS-67 b?
HATS-67 b is about 3,132 light-years from Earth in the constellation Centaurus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 55,114,400 years to get there.
How big is HATS-67 b compared to Earth?
HATS-67 b has 18.89 times the radius of Earth and about 461 times its mass.
How long is a year on HATS-67 b?
One orbit around HATS-67 takes 1.6 Earth days — short enough that 227 of its years would fit into one Earth year.
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