Key parameters at a glance
- A radius of 1.96 Earth radii
- A mass of 4.50 Earth masses
- Surface gravity around 1.17 g
- An orbital period of 7.518 days
- Semi-major axis 0.0730 AU
- Equilibrium temperature 784 K (511 °C)
- Distance from Earth 1,872.88 light-years
- Earth Similarity Index 0.353
- Travel time at Voyager 1 speed 33,028,221 years
1 sibling around Kepler-118
Kepler-118 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-118 b this | Super-Earth | 1.96 | 4.50 | 7.518 | 784 | 2014 |
| Kepler-118 c | Neptune-like | 7.68 | 45.70 | 20.172 | 564 | 2014 |
Kepler-118 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#49of 1176
top 4.1%
This planet
1.96R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-118 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.96 | 11.21 |
| Mass (M⊕) | 1.00 | 4.50 | 317.83 |
| Density (g/cm³) | 5.51 | 3.28 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.17 | 2.53 |
| Insolation (S⊕) | 1.00 | 79.75 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 171884427
Gaia DR2
Gaia DR2 2075162656527684864
Gaia DR3
Gaia DR3 2075162656527684864
System
Kepler-118
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 7.52 Earth days (2.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0730 AU.
Transit Fingerprint
Depth
0.030 %
Duration
2.857 h
Impact parameter b
0.720
Rp / R★
0.014710
Transit midpoint (BJD)
2,454,965.5367
Photometric dip
Transit produces a flux drop of 300 ppm lasting ≈ 2.86 h.
Extended Orbital Architecture
Planet / star radius ratio
0.014710
Semi-major axis / stellar radius
20.330
Impact parameter (b)
0.720
Transit mid-time (BJD)
2,454,965.5367
Angular separation (arcsec)
0.12700
Eq. Temperature
784K
(511 °C)
Insolation (S⊕)
79.75
Earth = 1.00
Earth Similarity (ESI)
0.353
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
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-118
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,274 K — cooler than the Sun (5,778 K)
Estimated Age
13.90 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.094 R☉
Stellar Mass
0.811 M☉
Metallicity [Fe/H]
0.18
Extended Stellar Properties
Surface gravity (log g)
4.321 dex
Stellar density
6.774 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.713 mas
Total Proper Motion
11.822 mas/yr
PM Right Ascension
6.50 mas/yr
PM Declination
-9.87 mas/yr
Galactic Cartesian (pc)
x = 0.366 · y = -0.654 · z = 0.662
Equatorial (J2000)
RA 299.21319° · Dec 41.42482°
Galactic ℓ, b
76.530° · 6.534°
Ecliptic λ, β
317.333° · 60.154°
HTM-20 index
-239962899
Similar Worlds
K2-230 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.96 R⊕ · 1,763.8 ly
Kepler-1127 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.96 R⊕ · 2,747.7 ly
Kepler-1392 b
Super-Earth · G-type yellow (Sun-like)
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Kepler-792 b
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Radius 1.96 R⊕ · 4,649.3 ly
Kepler-523 b
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Kepler-973 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.96 R⊕ · 1,071.5 ly