The star
The star
2MASS J19383260+4603591
- Type
- hot star
- Surface
- ≈ 29,564 K
- Size
- 0.20 × the Sun
- Mass
- 0.48 × the Sun
- Brightness
- 28.2 × the Sun
- Habitable zone
- 5.04–8.87 AU
The planets
2MASS J19383260+4603591
2MASS J19383260+4603591 b
- Year
- 406.00 days
- Distance from star
- 0.92 AU
- Mass
- 1.9 Jupiters
- Size
- 13 × Earth
- Temperature
- ≈ 670 K (+396 °C)
- Found
- 2015, eclipse timing variations (Kepler)
2MASS J19383260+4603591
Kepler-451 d
- Year
- 43.00 days
- Distance from star
- 0.188 AU
- Mass
- at least 1.8 Jupiters
- Size
- 14 × Earth
- Found
- 2022, eclipse timing variations (Multiple Observatories)
2MASS J19383260+4603591
Kepler-451 c
- Year
- 4.0 years
- Distance from star
- 1.97 AU
- Mass
- at least 1.6 Jupiters
- Size
- 14 × Earth
- Found
- 2022, eclipse timing variations (Multiple Observatories)
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
Eclipse Timing Variations
Discovered by eclipse timing variations.
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.