Complete world information

TOI-700 e

It orbits closer to the inner edge of the system's optimistic habitable zone.

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Scientific status

No exoplanet is confirmed habitable or inhabited. Habitable-zone position only means that liquid surface water could be possible under the right atmospheric conditions. Rate the Earth percentages are editorial comparison scores, not scientific probabilities.

Rate the Earth habitability percentages are editorial comparison scores, not scientific proof of habitability or life.
NASA / Goddard artist conceptWarm terrestrial world concept
Rate the Earth habitability comparison59%
Potential candidate — not confirmed habitable
Probability of other life37%
Candidate for simple life
Distance modelApprox. 101 light-years

The listed value is the approximate present distance from Earth. Interstellar destinations move, but the difference is negligible compared with the enormous journey time at current spacecraft speeds.

One-way light time101.4 years

Minimum delay for information travelling at light speed.

Round-trip communication202.8 years

Approximate send-and-reply delay before processing time.

Real mission comparisonBeyond current mission capability

No spacecraft has travelled to this system

Host systemTOI-700Open the complete star-system information page →

Life potential

Could other life exist on TOI-700 e?

TOI-700 e is treated as a potentially habitable candidate, so this site assigns it a moderate editorial probability for simple non-human life.

Editorial probability of other life37%
Candidate for simple life

Why this score?

  • Rate the Earth habitability comparison score: 59%.
  • Atmosphere clue: Unknown.
  • Host-star context: M-type red dwarf.
  • The catalog flags this world as a potentially habitable candidate.

This probability is an editorial astrobiology estimate based on public characteristics, not a formal scientific measurement.

Complete data sheet

Everything listed for TOI-700 e

Measured values, estimates, discovery information and the main uncertainties are shown together below.

WorldTOI-700 e
ClassificationEarth-size terrestrial planet
Host systemTOI-700
Host starM-type red dwarf
Distance from EarthApprox. 101 light-years
Radius0.953 × Earth
MassAbout 0.818 × Earth
GravityLikely near Earth range
AtmosphereUnknown
TemperatureModel-dependent
Orbital period27.8 days
Discovery year2023
Discovery methodTransit
Habitability statusPotential candidate — not confirmed habitable
Candidate classificationPotentially habitable candidate — not confirmed habitable
Image statusNo resolved surface image; displayed visual is a labelled artist concept
DistanceAbout 101 light-years
RadiusAbout 0.953 × Earth
MassAbout 0.818 × Earth
Orbital periodAbout 27.8 days

Travel calculation

How long would the journey take?

Straight-line arithmetic is compared with real mission history. Actual trajectories depend on orbital mechanics, acceleration, braking, launch windows and gravity assists.

At light speed101.4 years299,792 km/s

A physical reference only. A spacecraft with mass cannot reach light speed.

At 10% of light speed1,014 years29,979 km/s — hypothetical

No operational spacecraft can sustain this interstellar cruise speed.

At 1% of light speed10,140 years2,998 km/s — hypothetical

Still far beyond current spacecraft propulsion.

At Parker Solar Probe peak158,145 yearsAbout 692,000 km/h

Parker reaches this speed only very close to the Sun; it is not an interstellar cruise speed.

At New Horizons launch speed1.87 million yearsAbout 58,536 km/h

A comparison using a real high-energy launch from Earth.

At Voyager 1 speed1.79 million yearsAbout 61,200 km/h

A practical comparison with a spacecraft already moving into interstellar space.

Research guide

What we know, and what we do not know

What is directly known

The planet itself is not resolved as a detailed globe. Its existence and properties are inferred mainly through transit, together with measurements of the host star.

What remains unknown

Surface geography, oceans, continents, clouds and living organisms have not been directly observed. Atmosphere and composition may also remain uncertain.

What is known

TOI-700 e is a terrestrial-sized transiting planet announced in 2023.

Habitability limits

Its atmosphere and actual surface temperature remain unknown.

Why it stands out

Its radius is very close to Earth's and it shares a system with another temperate candidate.

Primary catalog source: NASA Science