K2-3d
| Exoplanet | List of exoplanets
| |||||
|---|---|---|---|---|---|---|
| Parent star | ||||||
| Star | K2-3 | |||||
| Right ascension | (α) | 11h29m20.39s [1] | ||||
| Declination | (δ) | -01d27m17.2s[1] | ||||
| Distance | 137±6.5 ly (42±2[1] pc) | |||||
| Mass | (m) | 0.612±0.086[1] M☉ | ||||
| Radius | (r) | 0.553±0.041[1] R☉ | ||||
| Temperature | (T) | null[1] K | ||||
| Metallicity | [Fe/H] | null[1] | ||||
| Age | null[1] Gyr | |||||
| Physical characteristics | ||||||
| Mass | (m) | 11.1±3.5[1] M⊕ | ||||
| Radius | (r) | 1.53±0.11[1] R⊕ | ||||
| Density | (ρ) | 17.5±6.3[1] g cm−3 | ||||
| Orbital elements | ||||||
| Semi-major axis | (a) | 0.2086±0.0100[1] AU | ||||
| Eccentricity | (e) | 0.045±0.045[1] | ||||
| Orbital period | (P) | 44.5705±0.0059[1] d | ||||
| Inclination | (i) | 89.79±0.15[1]° | ||||
| Discovery information | ||||||
| Discovery date | 2015 | |||||
| Discoverer(s) | Owen Deffner | |||||
| Discovery method | Transit | |||||
| Discovery site | Kepler Space Observatory | |||||
| Discovery status | Confirmed | |||||
K2-3d also known as EPIC 201367065 d is a massive solid exoplanet orbiting K2-3 a Red dwarf, every 44.5 days 137 ly away.[1][2][1]
Composition
K2-3d has a density of 17.5±6.3g/cm3, far greater that of Iron. Although its density is greater than Iron estimates show that K2-3d would need to have a mass of 14.1 Me to be made purely of Iron, this indicates that the planet probably has some silica "rock" or some water resembling that of a terrestrial planet.[3][1]
| Type | Mass (Me) |
|---|---|
| Iron | 14.1 |
| Rocky (Earth Like) | 3.7 |
| Water | 1.5 |
| K2-3d | 11.1 |
References
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