Star system, 670 light-years
KELT-9 and its one planet
KELT-9 b is an exoplanet 21.701 times Earth's width, about 1.9 times Jupiter's, 670 light-years away.
KELT-9 is a star of spectral type A, 670 light-years from us, with one known planet.
Drawn at the system's own scale, every orbit from the Archive's numbers.
What is measured, what is computed, what is imagined.
measured The period, and where the table says so the width and the mass, by the method named in each section.
computed Anything marked computed: the size of an orbit where Kepler's third law corrects the table, the temperature of a bare ball at that distance, the starlight received, and the habitable zone.
imagined The picture is an artist's impression. Nobody has seen the surface of a planet of another star: its colour, clouds and land are not known, and the share picture says so in its corner.
KELT-9 b
KELT-9 b is an exoplanet 21.701 times Earth's width, about 1.9 times Jupiter's, 670 light-years away.
- Width
- 21.701 × Earth's measured
- Mass
- 915.346 times Earth's measured
- One year
- 1.48112 days measured
- Distance from its star
- 0.03368 au from the Archive
- Temperature of a bare ball there
- 3,464 K computed, not measured
- Starlight, against Earth's
- 34300 × computed
It was found as a small, regular dip in its star's light each time it crosses in front of it in 2017. No habitable zone is computed for its star (a pulsar, a binary or a star outside the formula's range), so none is claimed.
See KELT-9 b in 3D · The picture is an artist's impression.
The star
- Surface temperature
- 9,270 K
- Width
- 2.418 × the Sun's
- Mass
- 2.32 × the Sun's
- Spectral type
- A
- Distance
- 670 light-years
- Stars in the system
- 2