Key parameters at a glance
- A radius of 1.48 Earth radii
- A mass of 2.79 Earth masses
- Surface gravity around 1.27 g
- An orbital period of 3.619 days
- Semi-major axis 0.0460 AU
- Equilibrium temperature 1,156 K (883 °C)
- Distance from Earth 2,140.82 light-years
- Earth Similarity Index 0.256
- Travel time at Voyager 1 speed 37,753,407 years
2 siblings around Kepler-218
Kepler-218 b shares its host star with 2 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-218 b this | Super-Earth | 1.48 | 2.79 | 3.619 | 1,156 | 2014 |
| Kepler-218 c | Sub-Neptune | 3.14 | 10.00 | 44.700 | 500 | 2014 |
| Kepler-218 d | Sub-Neptune | 2.66 | 7.56 | 124.524 | 356 | 2016 |
Kepler-218 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#784of 1176
top 66.6%
This planet
1.48R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-218 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.48 | 11.21 |
| Mass (M⊕) | 1.00 | 2.79 | 317.83 |
| Density (g/cm³) | 5.51 | 4.73 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.27 | 2.53 |
| Insolation (S⊕) | 1.00 | 460.66 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 271662623
Gaia DR2
Gaia DR2 2080452613110460928
Gaia DR3
Gaia DR3 2080452613110460928
System
Kepler-218
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.62 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0460 AU.
Transit Fingerprint
Depth
0.021 %
Duration
3.014 h
Impact parameter b
0.090
Rp / R★
0.012990
Transit midpoint (BJD)
2,454,968.4380
Photometric dip
Transit produces a flux drop of 207 ppm lasting ≈ 3.01 h.
Extended Orbital Architecture
Planet / star radius ratio
0.012990
Semi-major axis / stellar radius
9.140
Impact parameter (b)
0.090
Transit mid-time (BJD)
2,454,968.4380
Angular separation (arcsec)
0.07010
Eq. Temperature
1,156K
(883 °C)
Insolation (S⊕)
460.66
Earth = 1.00
Earth Similarity (ESI)
0.256
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
Discovery Paper
Primary reference
Rowe et al. 2014Instrument
Kepler CCD Array
Publication
2014-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2014 at Kepler (12 shown).
Host System: Kepler-218
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,502 K — cooler than the Sun (5,778 K)
Estimated Age
3.02 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.063 R☉
Stellar Mass
1.019 M☉
Metallicity [Fe/H]
0.37
Extended Stellar Properties
Surface gravity (log g)
4.391 dex
Stellar density
0.980 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.495 mas
Total Proper Motion
22.395 mas/yr
PM Right Ascension
8.12 mas/yr
PM Declination
20.87 mas/yr
Galactic Cartesian (pc)
x = 0.297 · y = -0.624 · z = 0.723
Equatorial (J2000)
RA 295.41288° · Dec 46.26658°
Galactic ℓ, b
79.453° · 11.289°
Ecliptic λ, β
316.098° · 65.688°
HTM-20 index
-1972364724
Similar Worlds
Kepler-97 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.48 R⊕ · 1,307.6 ly
Kepler-760 c
Super-Earth · G-type yellow (Sun-like)
Radius 1.48 R⊕ · 2,584.3 ly
Kepler-93 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.48 R⊕ · 312.8 ly
Kepler-1901 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.47 R⊕ · 3,354.1 ly
Kepler-1882 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.49 R⊕ · 1,446.1 ly
Kepler-1073 d
Super-Earth · G-type yellow (Sun-like)
Radius 1.49 R⊕ · 2,641.5 ly