Kepler-1468 d
Kepler-1468 d is a sub-Neptune orbiting Kepler-1468 in the constellation Cygnus. It lies about 6,195 light-years from Earth and was discovered in 2021 using the transit method.
How Big Is Kepler-1468 d?
Kepler-1468 d has a radius of 3.33 times that of Earth.
Is Kepler-1468 d in the Habitable Zone?
The position of Kepler-1468 d relative to the habitable zone of Kepler-1468 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-1468: 1.128–2.656 AU (conservative: 1.429–2.518 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 ›
Orbit and Year Length
A year on Kepler-1468 d — one full orbit around Kepler-1468 — lasts 19.6 Earth days, shorter than Mercury's 88-day year.
How Was Kepler-1468 d Discovered?
Kepler-1468 d was discovered in 2021 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-1468 d?
Kepler-1468 d is 6,194.5 light-years (1,899.2 parsecs) from Earth. Light arriving here tonight left the planet about 6,195 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 109,023,200 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-1468 d scores 0.20, ranking #3,836 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-1468
Kepler-1468
- Surface temperature
- 5,794 K (Sun: 5,772 K)
- Mass
- 1.07 M☉
- Radius
- 1.50 R☉
The Kepler-1468 Planetary System
Kepler-1468 d is one of 3 known planets in the Kepler-1468 system. Its siblings:
- Kepler-1468 b (Super Earth)
- Kepler-1468 c (Terrestrial)
Kepler-1468 d — Complete Data
| Radius | 3.332 Earth radii (0.297 Jupiter radii) |
|---|---|
| Orbital period | 19.59 days |
| Earth Similarity Index | 0.20 |
| Distance from Earth | 6,194.5 light-years (1,899.2 parsecs) |
| Constellation | Cygnus |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2021 |
Data: NASA Exoplanet Archive, last updated 2021-12-05. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About Kepler-1468 d
Is Kepler-1468 d habitable?
Kepler-1468 d is not known to orbit within the habitable zone of Kepler-1468, and as a sub-Neptune it is an unlikely candidate for life as we know it.
How far away is Kepler-1468 d?
Kepler-1468 d is about 6,195 light-years from Earth in the constellation Cygnus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 109,023,200 years to get there.
How big is Kepler-1468 d compared to Earth?
Kepler-1468 d has 3.33 times the radius of Earth.
How long is a year on Kepler-1468 d?
One orbit around Kepler-1468 takes 19.6 Earth days — short enough that 19 of its years would fit into one Earth year.
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