Kepler-1732 b
Kepler-1732 b is a Neptune-like planet orbiting Kepler-1732 in the constellation Cygnus. It lies about 4,206 light-years from Earth and was discovered in 2021 using the transit method.
How Big Is Kepler-1732 b?
Kepler-1732 b has a radius of 4.10 times that of Earth.
Is Kepler-1732 b in the Habitable Zone?
The position of Kepler-1732 b relative to the habitable zone of Kepler-1732 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-1732: 1.135–2.671 AU (conservative: 1.438–2.532 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-1732 b — one full orbit around Kepler-1732 — lasts 32.3 Earth days, shorter than Mercury's 88-day year.
How Was Kepler-1732 b Discovered?
Kepler-1732 b 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-1732 b?
Kepler-1732 b is 4,205.5 light-years (1,289.4 parsecs) from Earth. Light arriving here tonight left the planet about 4,206 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 74,016,800 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-1732 b scores 0.20, ranking #3,910 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-1732
Kepler-1732
- Surface temperature
- 5,821 K (Sun: 5,772 K)
- Mass
- 1.04 M☉
- Radius
- 1.49 R☉
Planetary System
Kepler-1732 b is the only planet known to orbit Kepler-1732 so far.
Kepler-1732 b — Complete Data
| Radius | 4.099 Earth radii (0.366 Jupiter radii) |
|---|---|
| Orbital period | 32.31 days |
| Earth Similarity Index | 0.20 |
| Distance from Earth | 4,205.5 light-years (1,289.4 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-1732 b
Is Kepler-1732 b habitable?
Kepler-1732 b is not known to orbit within the habitable zone of Kepler-1732, and as a Neptune-like planet it is an unlikely candidate for life as we know it.
How far away is Kepler-1732 b?
Kepler-1732 b is about 4,206 light-years from Earth in the constellation Cygnus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 74,016,800 years to get there.
How big is Kepler-1732 b compared to Earth?
Kepler-1732 b has 4.10 times the radius of Earth.
How long is a year on Kepler-1732 b?
One orbit around Kepler-1732 takes 32.3 Earth days — short enough that 11 of its years would fit into one Earth year.
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