Key parameters at a glance
- A radius of 13.02 Earth radii
- An orbital period of 3.115 days
- Equilibrium temperature 957 K (684 °C)
- Distance from Earth 1,444.26 light-years
- Earth Similarity Index 0.067
- Travel time at Voyager 1 speed 25,469,544 years
- Almost certainly tidally locked to its host star given the close orbit
K2-371 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#957of 1771
top 54.0%
This planet
13.02R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | K2-371 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.02 | 11.21 |
| Mass (M⊕) | 1.00 | — | 317.83 |
| Density (g/cm³) | 5.51 | — | 1.33 |
| Surface Gravity (g) | 1.00 | — | 2.53 |
| Insolation (S⊕) | 1.00 | 198.09 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 366622912
Gaia DR2
Gaia DR2 602466302541172736
Gaia DR3
Gaia DR3 602466302541172736
System
K2-371
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.11 Earth days (0.9% of a terrestrial year).
Transit Fingerprint
Depth
2.846 %
Duration
2.359 h
Impact parameter b
0.666
Rp / R★
0.161900
Transit midpoint (BJD)
2,457,141.4176
Photometric dip
Transit produces a flux drop of 28,460 ppm lasting ≈ 2.36 h.
Extended Orbital Architecture
Planet / star radius ratio
0.161900
Semi-major axis / stellar radius
8.640
Impact parameter (b)
0.666
Transit mid-time (BJD)
2,457,141.4176
Eq. Temperature
957K
(684 °C)
Insolation (S⊕)
198.09
Earth = 1.00
Earth Similarity (ESI)
0.067
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
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: K2-371
Spectral Class
K-type orange
Effective Temperature
4,925 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.736 R☉
Stellar Mass
0.958 M☉
Metallicity [Fe/H]
-0.11
Extended Stellar Properties
Surface gravity (log g)
4.683 dex
Stellar density
2.745 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
2.230 mas
Total Proper Motion
9.807 mas/yr
PM Right Ascension
-9.57 mas/yr
PM Declination
-2.15 mas/yr
Galactic Cartesian (pc)
x = -0.604 · y = 0.771 · z = 0.202
Equatorial (J2000)
RA 128.06709° · Dec 11.63071°
Galactic ℓ, b
213.630° · 27.593°
Ecliptic λ, β
127.474° · -6.994°
HTM-20 index
903836867
Similar Worlds
Kepler-785 b
Gas Giant · K-type orange
Radius 13.02 R⊕ · 2,094.1 ly
WASP-107 c
Gas Giant · K-type orange
Radius 13.00 R⊕ · 211.2 ly
HD 1605 c
Gas Giant · K-type orange
Radius 13.00 R⊕ · 289.6 ly
HD 86950 b
Gas Giant · K-type orange
Radius 13.00 R⊕ · 684.4 ly
HD 174205 b
Gas Giant · K-type orange
Radius 13.00 R⊕ · 763.3 ly
CI Tau c
Gas Giant · K-type orange
Radius 13.00 R⊕ · 515.3 ly