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TOI-4513 b

Mini Neptune Pisces

TOI-4513 b is a mini-Neptune orbiting TOI-4513 in the constellation Pisces. It lies about 335 light-years from Earth and was discovered in 2026 using the transit method.

2.35×Earth radius
9.8 dOrbital period
335 lyDistance
2026Discovered

How Big Is TOI-4513 b?

Earth1.00 R⊕TOI-4513 b2.35 R⊕
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TOI-4513 b has a radius of 2.35 times that of Earth.

Is TOI-4513 b in the Habitable Zone?

The position of TOI-4513 b relative to the habitable zone of TOI-4513 cannot be precisely determined from the available orbital data.

Too hot Optimistic habitable zone Conservative habitable zone Too cold

Habitable zone of TOI-4513: 0.572–1.352 AU (conservative: 0.724–1.282 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.

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Orbit and Year Length

A year on TOI-4513 b — one full orbit around TOI-4513 — lasts 9.76 Earth days, shorter than Mercury's 88-day year.

How Was TOI-4513 b Discovered?

TOI-4513 b was discovered in 2026 using the transit method, with observations from Transiting Exoplanet Survey Satellite (TESS).

The transit method watches a star for the tiny, regular dip in brightness that occurs when a planet crosses in front of it. The depth and timing of these dips reveal the planet's size and orbital period.

How Far Away Is TOI-4513 b?

TOI-4513 b is 334.7 light-years (102.6 parsecs) from Earth. Light arriving here tonight left the planet around the year 1692. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 5,890,720 years to make the journey.

The Host Star: TOI-4513

TOI-4513

Surface temperature
5,624 K (Sun: 5,772 K)
Radius
0.80 R☉

Planetary System

TOI-4513 b is the only planet known to orbit TOI-4513 so far.

TOI-4513 b — Complete Data

Radius2.346 Earth radii (0.209 Jupiter radii)
Orbital period9.76 days
Distance from Earth334.7 light-years (102.6 parsecs)
ConstellationPisces
Discovery methodTransit
Discovery facilityTransiting Exoplanet Survey Satellite (TESS)
Discovery year2026

Data: NASA Exoplanet Archive, last updated 2026-04-23. Earth Similarity Index: PHL @ UPR Arecibo.

Frequently Asked Questions About TOI-4513 b

Is TOI-4513 b habitable?

TOI-4513 b is not known to orbit within the habitable zone of TOI-4513, and as a mini-Neptune it is an unlikely candidate for life as we know it.

How far away is TOI-4513 b?

TOI-4513 b is about 335 light-years from Earth in the constellation Pisces. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 5,890,720 years to get there.

How big is TOI-4513 b compared to Earth?

TOI-4513 b has 2.35 times the radius of Earth.

How long is a year on TOI-4513 b?

One orbit around TOI-4513 takes 9.8 Earth days — short enough that 37 of its years would fit into one Earth year.

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