KELT-15 b
KELT-15 b is a hot Jupiter orbiting KELT-15 in the constellation Carina. It lies about 1,059 light-years from Earth and was discovered in 2016 using the transit method.
How Big Is KELT-15 b?
KELT-15 b has a radius of 19.50 times that of Earth, or 1.74 times the radius of Jupiter. Its mass is 416 times that of Earth.
Is KELT-15 b in the Habitable Zone?
The position of KELT-15 b relative to the habitable zone of KELT-15 cannot be precisely determined from the available orbital data.
Habitable zone of KELT-15: 1.422–3.332 AU (conservative: 1.802–3.159 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 KELT-15 b — one full orbit around KELT-15 — lasts 3.33 Earth days, shorter than Mercury's 88-day year.
How Was KELT-15 b Discovered?
KELT-15 b was discovered in 2016 using the transit method, with observations from KELT-South.
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 KELT-15 b?
KELT-15 b is 1,059.0 light-years (324.7 parsecs) from Earth. Light arriving here tonight left the planet about 1,059 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 18,638,400 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. KELT-15 b scores 0.05, ranking #5,292 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: KELT-15
KELT-15 b belongs to a system of 2 stars; it orbits KELT-15.
KELT-15
- Surface temperature
- 6,003 K (Sun: 5,772 K)
- Mass
- 2.06 M☉
- Radius
- 1.78 R☉
Planetary System
KELT-15 b is the only planet known to orbit KELT-15 so far.
KELT-15 b — Complete Data
| Radius | 19.504 Earth radii (1.740 Jupiter radii) |
|---|---|
| Mass | 416.36 Earth masses (1.310 Jupiter masses) |
| Orbital period | 3.33 days |
| Earth Similarity Index | 0.05 |
| Distance from Earth | 1,059.0 light-years (324.7 parsecs) |
| Constellation | Carina |
| Discovery method | Transit |
| Discovery facility | KELT-South |
| Discovery year | 2016 |
Data: NASA Exoplanet Archive, last updated 2018-04-25. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About KELT-15 b
Is KELT-15 b habitable?
KELT-15 b is not known to orbit within the habitable zone of KELT-15, and as a hot Jupiter it is an unlikely candidate for life as we know it.
How far away is KELT-15 b?
KELT-15 b is about 1,059 light-years from Earth in the constellation Carina. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 18,638,400 years to get there.
How big is KELT-15 b compared to Earth?
KELT-15 b has 19.50 times the radius of Earth and about 416 times its mass.
How long is a year on KELT-15 b?
One orbit around KELT-15 takes 3.3 Earth days — short enough that 110 of its years would fit into one Earth year.
Explore KELT-15 b in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
