Exoplanet CatalogExoplanet GJ 3998 d
Radius2.34 R⊕Earth = 1
Mass6.1 M⊕Earth = 1
Orbital period41.78 d
Equilibrium temp.292 K≈ 19 °C
Distance59.2 ly
Discovered2025Radial Velocity
Size compared (radius, Earth = 1)
1.00
2.34
3.88
11.21
Where it sits among all planets (percentile)
37%
35%
76%
10%
4%
Share of planets with a smaller value (of 6,445 planets, where known).
Planets of GJ 3998 (3)
| Planet | Period (d) | Radius (R⊕) | Mass (M⊕) | Eq. temp K | Year |
|---|---|---|---|---|---|
| GJ 3998 b | 2.65 | 1.39 | 2.5 | 734 | 2016 |
| GJ 3998 c | 13.73 | 2.50 | 6.8 | 423 | 2016 |
| GJ 3998 d | 41.78 | 2.34 | 6.1 | 292 | 2025 |
| Host star | Spectral type | Teff K | Radius (R☉) | Mass (M☉) |
|---|---|---|---|---|
| GJ 3998 | M1 | 3,726 | 0.50 | 0.52 |
Values are NASA Exoplanet Archive estimates and may change. Equilibrium temperature is a theoretical value ignoring any atmosphere.