Key parameters at a glance
- A radius of 2.67 Earth radii
- A mass of 7.61 Earth masses
- Surface gravity around 1.07 g
- An orbital period of 12.550 days
- Equilibrium temperature 655 K (382 °C)
- Distance from Earth 658.37 light-years
- Earth Similarity Index 0.377
- Travel time at Voyager 1 speed 11,610,274 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around K2-348
K2-348 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| K2-348 b | Sub-Neptune | 3.26 | 10.70 | 4.688 | 908 | 2021 |
| K2-348 c this | Sub-Neptune | 2.67 | 7.61 | 12.550 | 655 | 2021 |
K2-348 c Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#904of 1978
top 45.7%
This planet
2.67R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | K2-348 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.67 | 11.21 |
| Mass (M⊕) | 1.00 | 7.61 | 317.83 |
| Density (g/cm³) | 5.51 | 2.20 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.07 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Star Catalogue Identifiers
TIC
TIC 117275513
Gaia DR2
Gaia DR2 690310993768911104
Gaia DR3
Gaia DR3 690310993768911104
System
K2-348
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 12.55 Earth days (3.4% of a terrestrial year).
Transit Fingerprint
Depth
0.086 %
Duration
3.680 h
Impact parameter b
0.430
Rp / R★
0.028700
Transit midpoint (BJD)
2,458,104.4357
Photometric dip
Transit produces a flux drop of 858 ppm lasting ≈ 3.68 h.
Extended Orbital Architecture
Planet / star radius ratio
0.028700
Semi-major axis / stellar radius
24.470
Impact parameter (b)
0.430
Transit mid-time (BJD)
2,458,104.4357
Eq. Temperature
655K
(382 °C)
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.377
0 = alien, 1 = Earth-identical
Insufficient insolation data — 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: K2-348
Spectral Class
K-type orange
Effective Temperature
5,077 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.850 R☉
Stellar Mass
0.830 M☉
Metallicity [Fe/H]
0.13
Extended Stellar Properties
Surface gravity (log g)
4.500 dex
Stellar density
1.759 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
4.925 mas
Total Proper Motion
34.614 mas/yr
PM Right Ascension
1.18 mas/yr
PM Declination
-34.59 mas/yr
Galactic Cartesian (pc)
x = -0.596 · y = 0.688 · z = 0.413
Equatorial (J2000)
RA 130.87835° · Dec 24.42296°
Galactic ℓ, b
200.789° · 34.695°
Ecliptic λ, β
126.811° · 6.056°
HTM-20 index
-502300985
Similar Worlds
Kepler-357 c
Sub-Neptune · K-type orange
Radius 2.67 R⊕ · 2,245.8 ly
Kepler-80 b
Sub-Neptune · K-type orange
Radius 2.67 R⊕ · 1,205.0 ly
Kepler-196 d
Sub-Neptune · K-type orange
Radius 2.66 R⊕ · 1,472.0 ly
Kepler-1110 b
Sub-Neptune · K-type orange
Radius 2.66 R⊕ · 2,370.6 ly
Kepler-1987 d
Sub-Neptune · K-type orange
Radius 2.66 R⊕ · 1,942.9 ly
TOI-1064 c
Sub-Neptune · K-type orange
Radius 2.65 R⊕ · 222.0 ly