Original project · 2026

Complete star-system information

Kepler-22

A distant G-type star system containing the possible ocean-world candidate Kepler-22 b.

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Host starKepler-22

G-type main-sequence star

Distance from EarthApprox. 635 light-years

One-way light time: 635 years

Worlds listed here1

1 catalog candidates flagged for habitability discussion.

Communication round trip1,270 years

Before any scientific processing or response delay.

System architecture

Kepler-22

Star typeG-type main-sequence star
ArchitectureA distant system best known for Kepler-22 b.
How it is observedKepler measured periodic transits but the planet's detailed composition remains uncertain.
Research importanceIt was an early milestone among planets detected in a host star's habitable-zone region.
Main uncertaintyIts large radius means it may not be a rocky Earth analogue.
Catalog worldKepler-22 b
DetectionTransit
Direct imageNo
CompositionUncertain

System travel calculation

How long to reach Kepler-22?

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 speed635 years299,792 km/s

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

At 10% of light speed6,350 years29,979 km/s — hypothetical

No operational spacecraft can sustain this interstellar cruise speed.

At 1% of light speed63,500 years2,998 km/s — hypothetical

Still far beyond current spacecraft propulsion.

At Parker Solar Probe peak990,355 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 speed11.71 million yearsAbout 58,536 km/h

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

At Voyager 1 speed11.2 million yearsAbout 61,200 km/h

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

Catalog worlds in this system

1 listed worlds

Primary catalog source: NASA Science ↗