Host star — LP 890-9
- Spectral type
- M6 V
- Temperature
- 2,850 K
- Radius
- 0.16 R☉
- Mass
- 0.12 M☉
- Luminosity
- 0.001 L☉
- Distance
- 32.4 pc (106 ly)
Red dwarf — the most common type of star. Cool and small.
Very cool — a faint red dwarf.
LP 890-9 c
Orbits LP 890-9 · 106 light-years from Earth
RockyTransit2022ESI 87 · Very Earth-like
Radius
1.37×
Earth
Mass
25.3×
Earth
Year
8d
Temp
272 K
-1°C
Gravity
13.5×
Earth
Distance
106
ly
What it would be like
LP 890-9 c is a rocky world, potentially similar in composition to Earth or Mars — a solid surface you could, in theory, stand on.
At 13.5g, gravity is crushing by Earth standards. Walking would feel like carrying a 878 kg backpack permanently.
With an equilibrium temperature around -1°C, this planet sits in the temperature range where liquid water could potentially exist on the surface — a key ingredient for life as we know it.
A year here is only 8.5 Earth days. Seasons, if they exist, change in a matter of hours.
Earth comparison
Logarithmic bars so Jupiter-class planets fit the same scale as Earth-size worlds.
Radius1.37R⊕
1/25×Earth = 125×
Mass25M⊕
1/10000×Earth = 110000×
Surface gravity14g
1/100×Earth = 1100×
Equilibrium temp272 K(-1°C)
0 KEarth 255 K2500 K
Side-by-side with Earth
Temperature in context
Liquid N₂Mars avgEarth eq.Earth sfc.Boiling H₂OVenus
Discovery & orbit
- Method
- Transit
- Year
- 2022
- Facility
- SPECULOOS Southern Observatory
- Semi-major axis
- 0.0398 AU
- Period
- 8.46 days
- Eccentricity
- —
- Density
- —
Detected by measuring the tiny dip in starlight as the planet crosses in front of its star.
Discovered via · Transit
Tiny dip in starlight as the planet crosses in front of its star
A transit photometer watches a star nonstop and measures its brightness to ~0.01%. When a planet passes between us and the star, the star dims briefly — the deeper the dip, the bigger the planet. This is how Kepler and TESS found most known exoplanets.
- Overall share
- ~75% of all confirmed worlds
- Best for
- Earth-to-Neptune-sized planets on short orbits
Hertzsprung–Russell Diagram
Where this host star sits among … exoplanet host stars. The main sequence band runs diagonally — giants and supergiants sit above, white dwarfs below.
OBAFGKMCurrent star
How far is 106 light-years?
- A light beam leaving Earth right now would arrive in 106 years.
- At Voyager 1's speed (17 km/s), the trip would take approximately 1.9 million years.
- A radio signal sent today would arrive in 105.8 years — and the reply wouldn't come back for twice that.
Earth Similarity Index
87/1000 — Nothing like Earth100 — Identical to Earth
ESI combines radius similarity and equilibrium temperature similarity. Earth = 100. Mars ≈ 73. Venus ≈ 44. This score reflects two physical parameters only — not atmosphere, water, or magnetic field.