Kepler-416 d
Kepler-416 d is a super-Earth orbiting Kepler-416 in the constellation Lyra. It lies about 2,253 light-years from Earth and was discovered in 2023 using the transit method.
How Big Is Kepler-416 d?
Kepler-416 d has a radius of 1.61 times that of Earth.
Is Kepler-416 d in the Habitable Zone?
The position of Kepler-416 d relative to the habitable zone of Kepler-416 cannot be precisely determined from the available orbital data.
Temperature on Kepler-416 d
The equilibrium temperature of Kepler-416 d is about 1,253 K (980 °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 583 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on Kepler-416 d — one full orbit around Kepler-416 — lasts 3.08 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.041 AU — closer to its star than Mercury is to the Sun.
How Was Kepler-416 d Discovered?
Kepler-416 d was discovered in 2023 using the transit method, with observations from Kepler.
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 Kepler-416 d?
Kepler-416 d is 2,253.1 light-years (690.8 parsecs) from Earth. Light arriving here tonight left the planet about 2,253 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 39,654,560 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. Kepler-416 d scores 0.28, ranking #2,392 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-416
Kepler-416
- Mass
- 1.00 M☉
- Radius
- 1.08 R☉
The Kepler-416 Planetary System
Kepler-416 d is one of 3 known planets in the Kepler-416 system. Its siblings:
- Kepler-416 b (Super Earth)
- Kepler-416 c
Kepler-416 d — Complete Data
| Radius | 1.610 Earth radii (0.144 Jupiter radii) |
|---|---|
| Orbital period | 3.08 days |
| Orbital distance | 0.041 AU |
| Equilibrium temperature | 1,253 K (980 °C) |
| Stellar irradiation | 583.25× Earth |
| Earth Similarity Index | 0.28 |
| Distance from Earth | 2,253.1 light-years (690.8 parsecs) |
| Constellation | Lyra |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2023 |
Data: NASA Exoplanet Archive, last updated 2017-05-08. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About Kepler-416 d
Is Kepler-416 d habitable?
Kepler-416 d is not known to orbit within the habitable zone of Kepler-416, and as a super-Earth it is an unlikely candidate for life as we know it.
How far away is Kepler-416 d?
Kepler-416 d is about 2,253 light-years from Earth in the constellation Lyra. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 39,654,560 years to get there.
How big is Kepler-416 d compared to Earth?
Kepler-416 d has 1.61 times the radius of Earth.
How long is a year on Kepler-416 d?
One orbit around Kepler-416 takes 3.1 Earth days — short enough that 119 of its years would fit into one Earth year.
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