GJ 1061 b

Planet· orbits GJ 1061

GJ 1061 b - the innermost of GJ 1061's three planets, a hot rocky world (~1.1 Earth masses) on a 3.2-day orbit. Never imaged.

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Key facts

Mass

6.63 × 10²⁴ kg

1.11 M⊕

Year

3.2 Earth days

Distance from GJ 1061

3,141,555 km

Mass: 6.63 × 10²⁴ kg · 1.11 M⊕
Radius: Not measured; No transit — radius is a model estimate for a rocky world; true size unknown.

Semi-major axis: 3,141,555 km; From the NASA Exoplanet Archive (radial-velocity orbit)
Eccentricity: 0.05; From the NASA Exoplanet Archive (radial-velocity orbit)
Inclination: 0.00 °; From the NASA Exoplanet Archive (radial-velocity orbit)
Orbital period: 3.2 days; From the NASA Exoplanet Archive (radial-velocity orbit)
Perihelion: 2,984,478 km; Computed from the orbital elements
Aphelion: 3,298,633 km; Computed from the orbital elements
Mean orbital velocity: 71.3 km/s; Computed from the orbital elements

Bulk composition: Presumed rocky (~1.1 Earth masses); never imaged.
Surface appearance: Appearance based on ESO/M. Kornmesser's artist's concept. No spacecraft has imaged this world, so its real appearance is unknown — The surface shown is an artistic representation, shown only in Visual mode; Realism shows a plain spectral colour.

Insolation: 3.85 S⊕ · 3.85× the sunlight Earth receives; Computed from GJ 1061's luminosity and the orbital distance (inverse-square; Earth's sunlight = 1).
Equilibrium temperature: 388 K (115 °C); Computed model value — not measured.

Method: Radial-velocity detection (stellar wobble)
Name: Designated 'b' as the first planet found around its star, following the IAU convention of lettering planets in discovery order from 'b'.

One of three planets announced in 2020 from radial-velocity data - the inner, warmest of the family.

No official imagery available — this object has never been visited and no officially-licensed depiction exists.