- sun
- 3.9× wider
- sky
- dim red
Illustration computed from this world’s measured and derived values, not a photograph.
LP 890-9 c
LP 890-9 c is a confirmed rocky exoplanet 106 ly from Earth in the constellation Eridanus, discovered in 2022 by SPECULOOS Southern Observatory.
Transit: spotted by the tiny, repeating dip in its star’s light each time the planet crosses in front of it (what that means).
Its red dwarf looks 3.9× wider than ours, bathing the surface in dim red light. It is likely tidally locked, so that sun never moves in the sky: one hemisphere in endless day, the other in permanent night. A year passes in just 8.5 days, and at an estimated -1°C (30°F) it is cold.
Catalog values (NASA Exoplanet Archive): mass 25.30 M⊕, radius 1.37 R⊕. Its catalog mass and radius imply a density of 54.6 g/cm³, denser than compressed iron, so they cannot both be right, and gravityfinder does not use LP 890-9 c in gravity rankings or weight calculations.
How closely this world matches Earth in size and warmth, from 0 to 1 (Earth = 1.0). Computed by gravityfinder. See every world ranked →
What these mean: surface gravity · tidal locking · equilibrium temperature · Earth similarity · habitable zone
Hear how a voice sounds herea computed acoustic demoEXPERIMENTAL · just for fun
Your voice would sound much as it does on Earth.
Assuming Earth-like air at this world's temperature of about -1°C (30°F), sound would travel close to its Earth speed, so your voice would sound much as it does on Earth. The real atmosphere is unknown.
A real voice sample, pitch-shifted (tempo held constant) to suggest the acoustics: a playful approximation, not a precise simulation. Voice: Lingua Libre / Vealhurl, CC BY-SA 4.0.
- Surface temperatures near -1°C (30°F) fall in the range where liquid water is at least possible.
- !Likely tidally locked: one hemisphere in endless day, the other in permanent night.
A playful read of LP 890-9 c’s measured and computed values, not a real advisory.
How long to get there · 106 ly awayCALCULATED
Zoom out: star → system → (soon) galaxy arm, host black hole, and a real image of the host galaxy.
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How far is LP 890-9 c from Earth?
LP 890-9 c lies about 106 light-years from Earth.
How long would it take to get to LP 890-9 c?
At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 164,963 years.
How hot is LP 890-9 c?
LP 890-9 c's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about -1°C (30°F).
Is LP 890-9 c habitable?
LP 890-9 c orbits near its star's habitable zone, the range of distances where liquid water could be stable, and its Earth-similarity index is 0.73. That makes it worth studying, but it is not evidence of life: we have no measurement of its atmosphere, water, or surface.
How long is a year on LP 890-9 c?
LP 890-9 c completes one orbit of its star in 8.5 days.
Illustration generated from LP 890-9 c's confirmed parameters, not a photograph.