Kepler-1514 b
Kepler-1514 b is a cold gas giant orbiting Kepler-1514 in the constellation Cygnus. It lies about 1,296 light-years from Earth and was discovered in 2016 using the transit method.
How Big Is Kepler-1514 b?
Kepler-1514 b has a radius of 12.42 times that of Earth, or 1.11 times the radius of Jupiter. Its mass is 1,678 times that of Earth, giving it a density of 4.82 g/cm³ — comparable to rocky planets like Earth (5.51 g/cm³).
Is Kepler-1514 b in the Habitable Zone?
Kepler-1514 b orbits inside the inner edge of the habitable zone of Kepler-1514. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of Kepler-1514: 1.071–2.502 AU (conservative: 1.357–2.372 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Temperature on Kepler-1514 b
The equilibrium temperature of Kepler-1514 b is about 388 K (115 °C) — hotter than anywhere on Earth. This estimate ignores any atmosphere, which could change surface temperatures dramatically — Earth's greenhouse effect adds about 33 °C. It receives 3.23 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on Kepler-1514 b — one full orbit around Kepler-1514 — lasts 217.8 Earth days, between the years of Mercury (88 days) and Earth (365 days). It orbits at an average distance of 0.753 AU — comparable to the inner Solar System. Its orbit is highly elliptical (eccentricity 0.40), swinging dramatically closer to and farther from its star.
How Was Kepler-1514 b Discovered?
Kepler-1514 b was discovered in 2016 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-1514 b?
Kepler-1514 b is 1,295.8 light-years (397.3 parsecs) from Earth. Light arriving here tonight left the planet about 1,296 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 22,806,080 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-1514 b scores 0.26, ranking #2,850 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-1514
Kepler-1514
- Surface temperature
- 6,145 K (Sun: 5,772 K)
- Mass
- 1.20 M☉
- Radius
- 1.29 R☉
- Luminosity
- 2.1300 L☉
- Age
- 2.9 billion years (Sun: 4.6)
The Kepler-1514 Planetary System
Kepler-1514 b is one of 2 known planets in the Kepler-1514 system. Its siblings:
- Kepler-1514 c (Terrestrial)
Kepler-1514 b — Complete Data
| Radius | 12.420 Earth radii (1.108 Jupiter radii) |
|---|---|
| Mass | 1,678.14 Earth masses (5.280 Jupiter masses) |
| Density | 4.82 g/cm³ (Earth: 5.51) |
| Orbital period | 217.83 days |
| Orbital distance | 0.753 AU |
| Eccentricity | 0.401 |
| Equilibrium temperature | 388 K (115 °C) |
| Stellar irradiation | 3.23× Earth |
| Earth Similarity Index | 0.26 |
| Distance from Earth | 1,295.8 light-years (397.3 parsecs) |
| Constellation | Cygnus |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2016 |
Data: NASA Exoplanet Archive, last updated 2021-01-05. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About Kepler-1514 b
Is Kepler-1514 b habitable?
No — Kepler-1514 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is Kepler-1514 b?
Kepler-1514 b is about 1,296 light-years from Earth in the constellation Cygnus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 22,806,080 years to get there.
How big is Kepler-1514 b compared to Earth?
Kepler-1514 b has 12.42 times the radius of Earth and about 1,678 times its mass.
How long is a year on Kepler-1514 b?
One orbit around Kepler-1514 takes 217.8 Earth days.
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