Key parameters at a glance
- A radius of 1.69 Earth radii
- A mass of 3.51 Earth masses
- Surface gravity around 1.22 g
- An orbital period of 12.832 days
- Distance from Earth 636.49 light-years
- Earth Similarity Index 0.847
- Travel time at Voyager 1 speed 11,224,504 years
- Almost certainly tidally locked to its host star given the close orbit
K2-377 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#413of 1176
top 35.0%
This planet
1.69R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | K2-377 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.69 | 11.21 |
| Mass (M⊕) | 1.00 | 3.51 | 317.83 |
| Density (g/cm³) | 5.51 | 3.97 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.22 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Star Catalogue Identifiers
TIC
TIC 422325510
Gaia DR2
Gaia DR2 3610557458450018944
Gaia DR3
Gaia DR3 3610557458450018944
System
K2-377
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 12.83 Earth days (3.5% of a terrestrial year).
Transit Fingerprint
Depth
0.075 %
Duration
3.408 h
Impact parameter b
0.262
Rp / R★
0.022400
Transit midpoint (BJD)
2,457,230.1429
Photometric dip
Transit produces a flux drop of 754 ppm lasting ≈ 3.41 h.
Extended Orbital Architecture
Planet / star radius ratio
0.022400
Semi-major axis / stellar radius
30.040
Impact parameter (b)
0.262
Transit mid-time (BJD)
2,457,230.1429
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.847
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: K2-377
Spectral Class
K-type orange
Effective Temperature
4,200 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.691 R☉
Stellar Mass
0.821 M☉
Metallicity [Fe/H]
-0.01
Extended Stellar Properties
Surface gravity (log g)
4.673 dex
Stellar density
2.794 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 12 bands
Astrometric Data
Parallax
5.096 mas
Total Proper Motion
97.362 mas/yr
PM Right Ascension
-97.32 mas/yr
PM Declination
-2.92 mas/yr
Galactic Cartesian (pc)
x = -0.901 · y = -0.380 · z = -0.210
Equatorial (J2000)
RA 202.89789° · Dec -12.09511°
Galactic ℓ, b
318.174° · 49.585°
Ecliptic λ, β
205.640° · -2.345°
HTM-20 index
70987393
Similar Worlds
K2-394 b
Super-Earth · K-type orange
Radius 1.69 R⊕ · 319.7 ly
Kepler-1148 b
Super-Earth · K-type orange
Radius 1.69 R⊕ · 2,040.7 ly
K2-131 b
Super-Earth · K-type orange
Radius 1.69 R⊕ · 497.4 ly
Kepler-674 b
Super-Earth · K-type orange
Radius 1.69 R⊕ · 1,116.3 ly
Kepler-968 c
Super-Earth · K-type orange
Radius 1.69 R⊕ · 946.9 ly
K2-381 d
Super-Earth · K-type orange
Radius 1.69 R⊕ · 475.2 ly