Star system, 64 light-years
HD 189733 and its one planet
HD 189733 b is an exoplanet 12.666 times Earth's width, about 1.1 times Jupiter's, 64 light-years away, orbiting closer to its star than the habitable zone we compute for it.
HD 189733 is a star of spectral type K2 V, 64 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.
HD 189733 b
HD 189733 b is an exoplanet 12.666 times Earth's width, about 1.1 times Jupiter's, 64 light-years away, orbiting closer to its star than the habitable zone we compute for it.
- Width
- 12.666 × Earth's measured
- Mass
- 359.148 times Earth's measured
- One year
- 2.21858 days measured
- Distance from its star
- 0.03126 au from the Archive
- Temperature of a bare ball there
- 1,104 K computed, not measured
- Starlight, against Earth's
- 354 × computed
It was found by the back-and-forth wobble its pull puts into its star's motion, seen as a shift in the colour of the star's light in 2005. Its orbit is closer to its star than the habitable zone computed for it.
See HD 189733 b in 3D · The picture is an artist's impression.
The star
- Surface temperature
- 5,052 K
- Width
- 0.75 × the Sun's
- Mass
- 0.79 × the Sun's
- Spectral type
- K2 V
- Distance
- 64 light-years
- Habitable zone, computed
- 0.5819 to 1.051 au from the star
- Stars in the system
- 2