The GJ 1061 System

3 planets 2 in habitable zone Horologium

GJ 1061 is a planetary system in the constellation Horologium hosting 3 confirmed exoplanets, about 12 light-years from Earth. 2 of its planets orbit within the habitable zone, where liquid water could exist on a planetary surface.

GJ 1061: Star and Habitable Zone

GJ 1061

Spectral type: M5.5 V
Surface temperature: 2,953 K (Sun: 5,772 K)
Mass: 0.12 M☉
Radius: 0.16 R☉
Luminosity: 0.0017 L☉
Age: 7.0 billion years (Sun: 4.6)

GJ 1061 b GJ 1061 c GJ 1061 d

Too hot Optimistic habitable zone Conservative habitable zone Too cold

Habitable zone of GJ 1061: 0.034–0.090 AU (conservative: 0.043–0.086 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.

See the full interactive habitable-zone view in the Exoplanet Explorer app ›

All 3 Planets in the GJ 1061 System

Planet	Type	Orbit	Radius	ESI	Discovered
GJ 1061 b	Terrestrial	3.2 d	—	0.57	2020
GJ 1061 c HZ	Terrestrial	6.7 d	—	0.86	2020
GJ 1061 d HZ	Terrestrial	13 d	—	0.86	2020

Discovery History

The first planet found here, GJ 1061 b, was discovered in 2020 using the radial velocity method.

2020 — GJ 1061 b (Radial Velocity)
2020 — GJ 1061 c (Radial Velocity)
2020 — GJ 1061 d (Radial Velocity)

Frequently Asked Questions About GJ 1061

How many planets does GJ 1061 have?

GJ 1061 has 3 confirmed exoplanets. More may await discovery.

Are any planets in the GJ 1061 system habitable?

2 planets in the system orbit within the habitable zone, where liquid water could exist. Actual habitability depends on atmospheres and composition, which are not yet known.

How far away is GJ 1061?

GJ 1061 is about 12 light-years from Earth in the constellation Horologium.

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