Original project · 2026

Complete star-system information

TOI-700

A nearby M-dwarf system with two small planets commonly discussed in habitable-zone studies.

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Host starTOI-700

Relatively quiet M-type red dwarf

Distance from EarthApprox. 101 light-years

One-way light time: 101.4 years

Worlds listed here2

2 catalog candidates flagged for habitability discussion.

Communication round trip202.8 years

Before any scientific processing or response delay.

System architecture

TOI-700

Star typeRelatively quiet M-type red dwarf
ArchitectureA multi-planet system with small transiting planets, including TOI-700 d and e.
How it is observedTESS transit detections provide radii and orbital periods; masses are less certain.
Research importanceThe system contains two small worlds commonly compared in habitable-zone research.
Main uncertaintyAtmospheres, masses and surface conditions require further observation.
Catalog worldsTOI-700 d and e
DetectionTransit
Direct imageNo
Primary surveyTESS

System travel calculation

How long to reach TOI-700?

This is the approximate distance from Earth to the host star system. Every listed planet in the system is effectively at the same interstellar distance for travel estimates.

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.

Catalog worlds in this system

2 listed worlds

Primary catalog source: NASA Science ↗