HD 6061 b
HD 6061 b is a super-Earth orbiting HD 6061 in the constellation Andromeda. It lies about 221 light-years from Earth and was discovered in 2023 using the transit method.
How Big Is HD 6061 b?
HD 6061 b has a radius of 2.43 times that of Earth. Its mass is 10.0 times that of Earth, giving it a density of 3.82 g/cm³ — between that of rocky and gaseous planets.
Is HD 6061 b in the Habitable Zone?
HD 6061 b orbits inside the inner edge of the habitable zone of HD 6061. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of HD 6061: 0.792–1.859 AU (conservative: 1.004–1.763 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Temperature on HD 6061 b
The equilibrium temperature of HD 6061 b is about 1,075 K (802 °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 HD 6061 b — one full orbit around HD 6061 — lasts 5.25 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.060 AU — closer to its star than Mercury is to the Sun.
How Was HD 6061 b Discovered?
HD 6061 b was discovered in 2023 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 HD 6061 b?
HD 6061 b is 220.5 light-years (67.6 parsecs) from Earth. Light arriving here tonight left the planet around the year 1806. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 3,880,800 years to make the journey.
The Host Star: HD 6061
HD 6061 b belongs to a system of 2 stars; it orbits HD 6061.
HD 6061
- Surface temperature
- 5,934 K (Sun: 5,772 K)
- Mass
- 1.03 M☉
- Radius
- 1.01 R☉
- Luminosity
- 1.1360 L☉
- Age
- 2.4 billion years (Sun: 4.6)
Planetary System
HD 6061 b is the only planet known to orbit HD 6061 so far.
HD 6061 b — Complete Data
| Radius | 2.428 Earth radii (0.217 Jupiter radii) |
|---|---|
| Mass | 10.00 Earth masses (0.031 Jupiter masses) |
| Density | 3.82 g/cm³ (Earth: 5.51) |
| Orbital period | 5.25 days |
| Orbital distance | 0.060 AU |
| Equilibrium temperature | 1,075 K (802 °C) |
| Distance from Earth | 220.5 light-years (67.6 parsecs) |
| Constellation | Andromeda |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2023 |
Data: NASA Exoplanet Archive, last updated 2024-07-23. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HD 6061 b
Is HD 6061 b habitable?
No — HD 6061 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is HD 6061 b?
HD 6061 b is about 221 light-years from Earth in the constellation Andromeda. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 3,880,800 years to get there.
How big is HD 6061 b compared to Earth?
HD 6061 b has 2.43 times the radius of Earth and about 10.0 times its mass.
How long is a year on HD 6061 b?
One orbit around HD 6061 takes 5.3 Earth days — short enough that 70 of its years would fit into one Earth year.
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