Original project · 2026

Complete star-system information

GJ 273

A nearby system containing GJ 273 b, a minimum-mass super-Earth receiving temperate stellar energy.

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Host starGJ 273 (Luyten's Star)

Nearby M-type red dwarf

Distance from EarthApprox. 12.2 light-years

One-way light time: 12.2 years

Worlds listed here1

1 catalog candidates flagged for habitability discussion.

Communication round trip24.4 years

Before any scientific processing or response delay.

System architecture

GJ 273 (Luyten's Star)

Star typeNearby M-type red dwarf
ArchitectureA nearby multi-planet system represented here by GJ 273 b.
How it is observedPlanet properties are inferred mainly from stellar radial velocity.
Research importanceIts short distance makes the system a notable future characterization target.
Main uncertaintyRadius, atmosphere and surface conditions remain unmeasured.
Catalog worldGJ 273 b
Alternative star nameLuyten's Star
DetectionRadial velocity
Direct imageNo

System travel calculation

How long to reach GJ 273?

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 speed12.2 years299,792 km/s

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

At 10% of light speed122 years29,979 km/s — hypothetical

No operational spacecraft can sustain this interstellar cruise speed.

At 1% of light speed1,220 years2,998 km/s — hypothetical

Still far beyond current spacecraft propulsion.

At Parker Solar Probe peak19,027 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 speed224,937 yearsAbout 58,536 km/h

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

At Voyager 1 speed215,145 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 ↗