Key parameters at a glance
- A radius of 1.95 Earth radii
- A mass of 4.45 Earth masses
- Surface gravity around 1.17 g
- An orbital period of 20.201 days
- Distance from Earth 673.86 light-years
- Earth Similarity Index 0.795
- Travel time at Voyager 1 speed 11,883,598 years
- Almost certainly tidally locked to its host star given the close orbit
2 siblings around K2-368
K2-368 d shares its host star with 2 other confirmed planets. Side-by-side measurements below.
K2-368 d Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#76of 1176
top 6.4%
This planet
1.95R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | K2-368 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.95 | 11.21 |
| Mass (M⊕) | 1.00 | 4.45 | 317.83 |
| Density (g/cm³) | 5.51 | 3.31 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.17 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Star Catalogue Identifiers
TIC
TIC 38136597
Gaia DR2
Gaia DR2 2613924969021549440
Gaia DR3
Gaia DR3 2613924969021549440
System
K2-368
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 20.20 Earth days (5.5% of a terrestrial year).
Transit Fingerprint
Depth
0.098 %
Duration
3.576 h
Impact parameter b
0.287
Rp / R★
0.026900
Transit midpoint (BJD)
2,456,988.5374
Photometric dip
Transit produces a flux drop of 982 ppm lasting ≈ 3.58 h.
Extended Orbital Architecture
Planet / star radius ratio
0.026900
Semi-major axis / stellar radius
42.920
Impact parameter (b)
0.287
Transit mid-time (BJD)
2,456,988.5374
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.795
0 = alien, 1 = Earth-identical
Insufficient insolation data. Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
Christiansen et al. 2022Instrument
Kepler CCD Array
Publication
2022-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2022 at K2 (12 shown).
Host System: K2-368
Spectral Class
K-type orange
Effective Temperature
4,663 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.663 R☉
Stellar Mass
0.746 M☉
Metallicity [Fe/H]
-0.25
Extended Stellar Properties
Surface gravity (log g)
4.667 dex
Stellar density
3.553 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 12 bands
Astrometric Data
Parallax
4.811 mas
Total Proper Motion
25.482 mas/yr
PM Right Ascension
18.96 mas/yr
PM Declination
17.03 mas/yr
Galactic Cartesian (pc)
x = 0.871 · y = -0.451 · z = -0.194
Equatorial (J2000)
RA 332.63576° · Dec -11.16612°
Galactic ℓ, b
47.886° · -49.023°
Ecliptic λ, β
330.605° · 0.097°
HTM-20 index
-690758855
Similar Worlds
WASP-84 c
Super-Earth · K-type orange
Radius 1.95 R⊕ · 328.1 ly
K2-285 e
Super-Earth · K-type orange
Radius 1.95 R⊕ · 505.4 ly
TOI-1739 b
Super-Earth · K-type orange
Radius 1.95 R⊕ · 231.5 ly
Kepler-62 d
Super-Earth · K-type orange
Radius 1.95 R⊕ · 981.3 ly
Kepler-330 c
Super-Earth · K-type orange
Radius 1.95 R⊕ · 2,340.3 ly
Kepler-1600 c
Super-Earth · K-type orange
Radius 1.94 R⊕ · 3,362.0 ly