Key parameters at a glance
- A radius of 1.59 Earth radii
- A mass of 3.15 Earth masses
- Surface gravity around 1.25 g
- An orbital period of 3.356 days
- Equilibrium temperature 722 K (449 °C)
- Distance from Earth 245.17 light-years
- Earth Similarity Index 0.412
- Travel time at Voyager 1 speed 4,323,547 years
- Almost certainly tidally locked to its host star given the close orbit
K2-344 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#588of 1176
top 49.9%
This planet
1.59R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | K2-344 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.59 | 11.21 |
| Mass (M⊕) | 1.00 | 3.15 | 317.83 |
| Density (g/cm³) | 5.51 | 4.31 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.25 | 2.53 |
| Insolation (S⊕) | 1.00 | 37.30 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 203289099
Gaia DR2
Gaia DR2 685235991691684352
Gaia DR3
Gaia DR3 685235991691684352
System
K2-344
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.36 Earth days (0.9% of a terrestrial year).
Transit Fingerprint
Depth
0.110 %
Duration
1.760 h
Impact parameter b
0.410
Rp / R★
0.029500
Transit midpoint (BJD)
2,458,095.7477
Photometric dip
Transit produces a flux drop of 1,101 ppm lasting ≈ 1.76 h.
Extended Orbital Architecture
Planet / star radius ratio
0.029500
Semi-major axis / stellar radius
13.790
Impact parameter (b)
0.410
Transit mid-time (BJD)
2,458,095.7477
Eq. Temperature
722K
(449 °C)
Insolation (S⊕)
37.30
Earth = 1.00
Earth Similarity (ESI)
0.412
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
De Leon et al. 2021Instrument
Kepler CCD Array
Publication
2021-08
Observation locale
Space
Discovery cohort
Planets confirmed in 2021 at K2 (12 shown).
Host System: K2-344
Spectral Class
K-type orange
Effective Temperature
4,374 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.490 R☉
Stellar Mass
0.510 M☉
Metallicity [Fe/H]
-0.95
Extended Stellar Properties
Surface gravity (log g)
4.760 dex
Stellar density
4.432 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
13.275 mas
Total Proper Motion
29.704 mas/yr
PM Right Ascension
14.47 mas/yr
PM Declination
-25.94 mas/yr
Galactic Cartesian (pc)
x = -0.673 · y = 0.641 · z = 0.369
Equatorial (J2000)
RA 136.36149° · Dec 21.66859°
Galactic ℓ, b
205.964° · 38.675°
Ecliptic λ, β
132.445° · 4.799°
HTM-20 index
-561191387
Similar Worlds
K2-50 b
Super-Earth · K-type orange
Radius 1.59 R⊕ · 839.7 ly
Kepler-55 d
Super-Earth · K-type orange
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Kepler-928 b
Super-Earth · K-type orange
Radius 1.59 R⊕ · 1,659.5 ly
Kepler-55 f
Super-Earth · K-type orange
Radius 1.59 R⊕ · 1,887.8 ly
Kepler-1804 b
Super-Earth · K-type orange
Radius 1.60 R⊕ · 1,417.0 ly
EPIC 212499991 b
Super-Earth · K-type orange
Radius 1.60 R⊕ · 924.0 ly