The star
The star
WISPIT 2
- Type
- orange dwarf
- Surface
- ≈ 4,400 K
- Size
- 1.42 × the Sun
- Mass
- 1.08 × the Sun
- Brightness
- 0.699 × the Sun
- Habitable zone
- 0.671–1.67 AU
The planets
WISPIT 2
WISPIT 2 c
- Year
- 50.4 years
- Distance from star
- 14 AU
- Mass
- 10 Jupiters
- Size
- 18 × Earth
- Temperature
- ≈ 2050 K (+1777 °C)
- Found
- 2026, imaging (Multiple Observatories)
WISPIT 2
WISPIT 2 b
- Year
- 414.1 years
- Distance from star
- 57 AU
- Mass
- 4.9 Jupiters
- Size
- 18 × Earth
- Temperature
- ≈ 33 K (-240 °C)
- Found
- 2025, imaging (Paranal Observatory)
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
- 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.
- Position: HYG Database v4.1 (CC BY-SA 4.0).
- Habitable zone: a simple estimate from the star's brightness (√L × 0.95 to 1.67 AU), shown as a guide.