Star system, 880 light-years
WASP-121 and its one planet
WASP-121 b is an exoplanet 19.526 times Earth's width, about 1.7 times Jupiter's, 880 light-years away, orbiting closer to its star than the habitable zone we compute for it.
WASP-121 is a star of spectral type F6 V, 880 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.
WASP-121 b
WASP-121 b is an exoplanet 19.526 times Earth's width, about 1.7 times Jupiter's, 880 light-years away, orbiting closer to its star than the habitable zone we compute for it.
- Width
- 19.526 × Earth's measured
- Mass
- 371.859 times Earth's measured
- One year
- 1.27493 days measured
- Distance from its star
- 0.02571 au from the Archive
- Temperature of a bare ball there
- 2,300 K computed, not measured
- Starlight, against Earth's
- 6660 × computed
It was found as a small, regular dip in its star's light each time it crosses in front of it in 2016. Its orbit is closer to its star than the habitable zone computed for it.
See WASP-121 b in 3D · The picture is an artist's impression.
The star
- Surface temperature
- 6,628 K
- Width
- 1.461 × the Sun's
- Mass
- 1.33 × the Sun's
- Spectral type
- F6 V
- Distance
- 880 light-years
- Habitable zone, computed
- 1.896 to 3.288 au from the star