13point8All planet systems
1 known planet · 1,647 light years

TCP J05074264+2447555

TCP J05074264+2447555 is a yellow star 1,647 light years away, with 1 confirmed planet. Distances and orbital speeds are to scale; the star and planets are enlarged so you can see them.

Day 0
habitable zone (estimate)planet orbits

Green band: where liquid water could exist on a planet's surface. Drag to turn the system, pinch or scroll to zoom.

The star

The star

TCP J05074264+2447555

Type
yellow star
Surface
≈ 5,805 K
Size
1.42 × the Sun
Mass
0.59 × the Sun
Brightness
2.08 × the Sun
Habitable zone
1.08–2.54 AU

The planets

TCP J05074264+2447555

TCP J05074264+2447555 b

Year
434.84 days
Distance from star
0.94 AU
Mass
20 Earths
Size
4.7 × Earth
Temperature
≈ 345 K (+71 °C)
Found
2018, microlensing (Multiple Observatories)
Outside the habitable zone

Masses found by the wobble method are minimums, because the orbit's tilt is unknown. Temperatures are equilibrium estimates for a bare planet, before any atmosphere.

How we know

A lens in space

The system briefly magnified a more distant star; a planet left its own small blip in the brightening.

Sources

  1. Planet and star parameters: NASA Exoplanet Archive, Planetary Systems Composite Parameters, retrieved 1 Nov 2026. This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with NASA under the Exoplanet Exploration Program.
  2. Position: HYG Database v4.1 (CC BY-SA 4.0).
  3. Habitable zone: a simple estimate from the star's brightness (√L × 0.95 to 1.67 AU), shown as a guide.
← Back to the 100-light-year map