Kepler-297 d
Kepler-297 d is a cold gas giant orbiting Kepler-297 in the constellation Draco. It lies about 2,258 light-years from Earth and was discovered in 2023 using the transit method.
How Big Is Kepler-297 d?
Kepler-297 d has a radius of 7.12 times that of Earth, or 0.64 times the radius of Jupiter.
Is Kepler-297 d in the Habitable Zone?
The position of Kepler-297 d relative to the habitable zone of Kepler-297 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-297: 0.656–1.551 AU (conservative: 0.830–1.471 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-297 d — one full orbit around Kepler-297 — lasts 150.0 Earth days, between the years of Mercury (88 days) and Earth (365 days).
How Was Kepler-297 d Discovered?
Kepler-297 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-297 d?
Kepler-297 d is 2,257.5 light-years (692.1 parsecs) from Earth. Light arriving here tonight left the planet about 2,258 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 39,732,000 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-297 d scores 0.25, ranking #3,111 of 5,565 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-297
Kepler-297
- Surface temperature
- 5,619 K (Sun: 5,772 K)
- Radius
- 0.92 R☉
The Kepler-297 Planetary System
Kepler-297 d is one of 3 known planets in the Kepler-297 system. Its siblings:
- Kepler-297 b (Mini Neptune)
- Kepler-297 c (Cold Gas Giant)
Kepler-297 d — Complete Data
| Radius | 7.119 Earth radii (0.635 Jupiter radii) |
|---|---|
| Orbital period | 150.02 days |
| Earth Similarity Index | 0.25 |
| Distance from Earth | 2,257.5 light-years (692.1 parsecs) |
| Constellation | Draco |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2023 |
Data: NASA Exoplanet Archive, last updated 2023-05-16. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About Kepler-297 d
Is Kepler-297 d habitable?
Kepler-297 d is not known to orbit within the habitable zone of Kepler-297, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is Kepler-297 d?
Kepler-297 d is about 2,258 light-years from Earth in the constellation Draco. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 39,732,000 years to get there.
How big is Kepler-297 d compared to Earth?
Kepler-297 d has 7.12 times the radius of Earth.
How long is a year on Kepler-297 d?
One orbit around Kepler-297 takes 150.0 Earth days.
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