Key parameters at a glance
- A radius of 1.33 Earth radii
- A mass of 2.34 Earth masses
- Surface gravity around 1.32 g
- An orbital period of 5.026 days
- Distance from Earth 673.86 light-years
- Earth Similarity Index 0.936
- 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 b shares its host star with 2 other confirmed planets. Side-by-side measurements below.
K2-368 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#1019of 1176
top 86.6%
This planet
1.33R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | K2-368 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.33 | 11.21 |
| Mass (M⊕) | 1.00 | 2.34 | 317.83 |
| Density (g/cm³) | 5.51 | 5.44 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.32 | 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 5.03 Earth days (1.4% of a terrestrial year).
Transit Fingerprint
Depth
0.049 %
Duration
2.280 h
Impact parameter b
0.272
Rp / R★
0.018400
Transit midpoint (BJD)
2,456,978.7672
Photometric dip
Transit produces a flux drop of 485 ppm lasting ≈ 2.28 h.
Extended Orbital Architecture
Planet / star radius ratio
0.018400
Semi-major axis / stellar radius
16.200
Impact parameter (b)
0.272
Transit mid-time (BJD)
2,456,978.7672
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.936
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
K2-211 b
Super-Earth · K-type orange
Radius 1.33 R⊕ · 888.1 ly
K2-268 e
Super-Earth · K-type orange
Radius 1.33 R⊕ · 1,069.1 ly
Kepler-220 e
Super-Earth · K-type orange
Radius 1.33 R⊕ · 558.1 ly
K2-148 b
Super-Earth · K-type orange
Radius 1.33 R⊕ · 405.9 ly
Kepler-1190 b
Super-Earth · K-type orange
Radius 1.33 R⊕ · 1,117.1 ly
Kepler-707 b
Super-Earth · K-type orange
Radius 1.33 R⊕ · 1,930.1 ly