- weight
- 1.52 g
- sun
- 7.1× wider
- sky
- deep orange
Illustration computed from this world’s measured and derived values, not a photograph.
LTT 1445 A b
LTT 1445 A b is a confirmed rocky exoplanet 22.4 ly from Earth in the constellation Eridanus, discovered in 2019 by Transiting Exoplanet Survey Satellite (TESS).
Transit: spotted by the tiny, repeating dip in its star’s light each time the planet crosses in front of it.
Standing on LTT 1445 A b, you would weigh about 52% more than you do on Earth. Its red dwarf looks 7.1× wider than ours, bathing the surface in deep orange 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 5.4 days, and at an estimated 158°C (316°F) it is blistering.
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
If your children grew up herea playful thought experiment
A little heavier than home, at 1.5 times Earth's gravity. A child raised here would likely grow a little shorter and sturdier than their Earth-raised parents, about 0.92x as tall as on Earth: a 5 ft 10 in adult could stand nearer 5 ft 4 in, with denser bones.
- Bones
- Thick and dense
- More weight to bear forces the skeleton to grow denser and stronger all through childhood.
A playful thought experiment from this world’s gravity, not a prediction about any real person. No human has ever grown up off Earth, so no one truly knows; the direction (taller in low gravity, shorter and stockier in high) follows how growing bodies respond to weight.
Hear how a voice sounds herea computed acoustic demo
Your voice would sound noticeably higher and reedier.
Assuming Earth-like air at this world's temperature of about 158°C (316°F), sound would travel roughly 22% faster than on Earth, so your voice would sound noticeably higher and reedier. The real atmosphere is unknown, so this is a best guess.
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.
- !Persistently hot at around 158°C (316°F), well above anything you would call comfortable.
- !Noticeably heavy, 1.5 times Earth's gravity.
- !Likely tidally locked: one hemisphere in endless day, the other in permanent night.
A playful read of LTT 1445 A b’s measured and computed values, not a real advisory.
How long to get there · 22.4 ly away
Zoom out: star → system → (soon) galaxy arm, host black hole, and a real image of the host galaxy.
Matched telescope & eyepiece recommendations are coming. Any product links will carry a clear affiliate disclosure.
What is the gravity on LTT 1445 A b?
LTT 1445 A b's surface gravity is about 1.5 times Earth's.
How much would you weigh on LTT 1445 A b?
Someone who weighs 150 pounds on Earth would weigh about 228 pounds on LTT 1445 A b.
How far is LTT 1445 A b from Earth?
LTT 1445 A b lies about 22.4 light-years from Earth.
How long would it take to get to LTT 1445 A b?
At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 34,942 years.
How hot is LTT 1445 A b?
LTT 1445 A b's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about 158°C (316°F).
How long is a year on LTT 1445 A b?
LTT 1445 A b completes one orbit of its star in 5.4 days.
Illustration generated from LTT 1445 A b's confirmed parameters, not a photograph.