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2 known planets · 308.6 light years

TYC 8998-760-1

TYC 8998-760-1 is a orange dwarf (K3 IV) 308.6 light years away, with 2 confirmed planets. 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

TYC 8998-760-1

Type
K3 IV
Surface
≈ 4,573 K
Size
1.02 × the Sun
Mass
1.00 × the Sun
Brightness
0.457 × the Sun
Habitable zone
0.539–1.33 AU

The planets

TYC 8998-760-1

TYC 8998-760-1 b

Year
1764.1 years
Distance from star
146 AU
Mass
22 Jupiters
Size
21 × Earth
Temperature
≈ 2638 K (+2365 °C)
Found
2020, imaging (Paranal Observatory)
Too hot
TYC 8998-760-1

TYC 8998-760-1 c

Year
5724.3 years
Distance from star
320 AU
Mass
6 Jupiters
Size
12 × Earth
Temperature
≈ 1240 K (+967 °C)
Found
2020, imaging (Paranal Observatory)
Too hot

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 direct picture

The star's glare is blocked or subtracted, leaving the planet's own faint light as a dot that moves along its orbit over the years.

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.
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