Star system, 97 light-years
51 Eridani and its one planet
51 Eri b is an exoplanet of unknown width, with a mass of about 3,464 times Earth's, 97 light-years away.
51 Eridani is a star of spectral type F0 IV, 97 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.
51 Eri b
51 Eri b is an exoplanet of unknown width, with a mass of about 3,464 times Earth's, 97 light-years away.
- Mass
- 3,464 times Earth's measured
- One year
- 9,100 days measured
- Distance from its star
- 10.4 au from the Archive
- Temperature of a bare ball there
- 122 K computed, not measured
- Starlight, against Earth's
- 0.0529 × computed
It was photographed directly, a faint dot beside the glare of its star in 2015. 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 51 Eri b in 3D · The picture is an artist's impression.
The star
- Surface temperature
- 7,422 K
- Width
- 1.45 × the Sun's
- Mass
- 1.75 × the Sun's
- Spectral type
- F0 IV
- Distance
- 97 light-years
- Stars in the system
- 3