HD 56414 b
HD 56414 b is a sub-Neptune orbiting HD 56414 in the constellation Volans. It lies about 888 light-years from Earth and was discovered in 2022 using the transit method.
How Big Is HD 56414 b?
HD 56414 b has a radius of 3.71 times that of Earth.
Is HD 56414 b in the Habitable Zone?
The position of HD 56414 b relative to the habitable zone of HD 56414 cannot be precisely determined from the available orbital data.
Temperature on HD 56414 b
The equilibrium temperature of HD 56414 b is about 1,133 K (860 °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 56414 b — one full orbit around HD 56414 — lasts 29.0 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.229 AU — closer to its star than Mercury is to the Sun. Its orbit is highly elliptical (eccentricity 0.68), swinging dramatically closer to and farther from its star.
How Was HD 56414 b Discovered?
HD 56414 b was discovered in 2022 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 56414 b?
HD 56414 b is 887.9 light-years (272.2 parsecs) from Earth. Light arriving here tonight left the planet around the year 1139. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 15,627,040 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. HD 56414 b scores 0.19, ranking #3,993 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HD 56414
HD 56414
- Surface temperature
- 8,500 K (Sun: 5,772 K)
- Mass
- 1.89 M☉
- Radius
- 1.75 R☉
- Luminosity
- 14.3900 L☉
- Age
- 0.4 billion years (Sun: 4.6)
Planetary System
HD 56414 b is the only planet known to orbit HD 56414 so far.
HD 56414 b — Complete Data
| Radius | 3.710 Earth radii (0.331 Jupiter radii) |
|---|---|
| Orbital period | 29.05 days |
| Orbital distance | 0.229 AU |
| Eccentricity | 0.680 |
| Equilibrium temperature | 1,133 K (860 °C) |
| Earth Similarity Index | 0.19 |
| Distance from Earth | 887.9 light-years (272.2 parsecs) |
| Constellation | Volans |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2022 |
Data: NASA Exoplanet Archive, last updated 2022-09-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HD 56414 b
Is HD 56414 b habitable?
HD 56414 b is not known to orbit within the habitable zone of HD 56414, and as a sub-Neptune it is an unlikely candidate for life as we know it.
How far away is HD 56414 b?
HD 56414 b is about 888 light-years from Earth in the constellation Volans. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 15,627,040 years to get there.
How big is HD 56414 b compared to Earth?
HD 56414 b has 3.71 times the radius of Earth.
How long is a year on HD 56414 b?
One orbit around HD 56414 takes 29.0 Earth days — short enough that 13 of its years would fit into one Earth year.
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