Key parameters at a glance
- A radius of 2.18 Earth radii
- A mass of 5.40 Earth masses
- Surface gravity around 1.14 g
- An orbital period of 8.777 days
- Distance from Earth 594.28 light-years
- Earth Similarity Index 0.754
- Travel time at Voyager 1 speed 10,480,111 years
- Almost certainly tidally locked to its host star given the close orbit
K2-379 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1702of 1978
top 86.0%
This planet
2.18R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | K2-379 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.18 | 11.21 |
| Mass (M⊕) | 1.00 | 5.40 | 317.83 |
| Density (g/cm³) | 5.51 | 2.86 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.14 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Star Catalogue Identifiers
TIC
TIC 90090343
Gaia DR2
Gaia DR2 4072055435329128576
Gaia DR3
Gaia DR3 4072055435329128576
System
K2-379
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 8.78 Earth days (2.4% of a terrestrial year).
Transit Fingerprint
Depth
0.093 %
Duration
2.904 h
Impact parameter b
0.481
Rp / R★
0.026600
Transit midpoint (BJD)
2,457,303.9091
Photometric dip
Transit produces a flux drop of 934 ppm lasting ≈ 2.90 h.
Extended Orbital Architecture
Planet / star radius ratio
0.026600
Semi-major axis / stellar radius
34.560
Impact parameter (b)
0.481
Transit mid-time (BJD)
2,457,303.9091
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.754
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: K2-379
Spectral Class
K-type orange
Effective Temperature
4,603 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.751 R☉
Stellar Mass
0.856 M☉
Metallicity [Fe/H]
-0.05
Extended Stellar Properties
Surface gravity (log g)
4.615 dex
Stellar density
2.103 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 12 bands
Astrometric Data
Parallax
5.460 mas
Total Proper Motion
42.939 mas/yr
PM Right Ascension
-2.34 mas/yr
PM Declination
-42.88 mas/yr
Galactic Cartesian (pc)
x = 0.201 · y = -0.867 · z = -0.457
Equatorial (J2000)
RA 283.03176° · Dec -27.18073°
Galactic ℓ, b
8.436° · -12.162°
Ecliptic λ, β
281.600° · -4.265°
HTM-20 index
-756965924
Similar Worlds
Kepler-113 c
Sub-Neptune · K-type orange
Radius 2.18 R⊕ · 855.7 ly
Kepler-250 d
Sub-Neptune · K-type orange
Radius 2.18 R⊕ · 2,480.7 ly
Kepler-261 b
Sub-Neptune · K-type orange
Radius 2.18 R⊕ · 1,035.5 ly
TOI-238 c
Sub-Neptune · K-type orange
Radius 2.18 R⊕ · 262.7 ly
Kepler-662 b
Sub-Neptune · K-type orange
Radius 2.18 R⊕ · 2,660.2 ly
Kepler-245 c
Sub-Neptune · K-type orange
Radius 2.18 R⊕ · 2,809.9 ly