Key parameters at a glance
- A radius of 3.42 Earth radii
- A mass of 11.60 Earth masses
- Surface gravity around 0.99 g
- An orbital period of 5.969 days
- Semi-major axis 0.0690 AU
- Equilibrium temperature 1,251 K (978 °C)
- Distance from Earth 3,115.34 light-years
- Earth Similarity Index 0.172
- Travel time at Voyager 1 speed 54,938,978 years
1 sibling around Kepler-116
Kepler-116 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-116 b this | Sub-Neptune | 3.42 | 11.60 | 5.969 | 1,251 | 2014 |
| Kepler-116 c | Sub-Neptune | 2.30 | 5.90 | 13.072 | 964 | 2014 |
Kepler-116 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#210of 1978
top 10.6%
This planet
3.42R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-116 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.42 | 11.21 |
| Mass (M⊕) | 1.00 | 11.60 | 317.83 |
| Density (g/cm³) | 5.51 | 1.59 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.99 | 2.53 |
| Insolation (S⊕) | 1.00 | 594.45 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 271260980
Gaia DR2
Gaia DR2 2078272831307891456
Gaia DR3
Gaia DR3 2078272831307891456
System
Kepler-116
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.97 Earth days (1.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0690 AU.
Transit Fingerprint
Depth
0.053 %
Duration
3.639 h
Impact parameter b
0.560
Rp / R★
0.021800
Transit midpoint (BJD)
2,454,970.1576
Photometric dip
Transit produces a flux drop of 528 ppm lasting ≈ 3.64 h.
Extended Orbital Architecture
Planet / star radius ratio
0.021800
Semi-major axis / stellar radius
12.593
Impact parameter (b)
0.560
Transit mid-time (BJD)
2,454,970.1576
Angular separation (arcsec)
0.07220
Eq. Temperature
1,251K
(978 °C)
Insolation (S⊕)
594.45
Earth = 1.00
Earth Similarity (ESI)
0.172
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-116
Spectral Class
F-type yellow-white
Effective Temperature
6,142 K — hotter than the Sun (5,778 K)
Estimated Age
3.16 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.454 R☉
Stellar Mass
1.198 M☉
Metallicity [Fe/H]
0.07
Extended Stellar Properties
Surface gravity (log g)
4.196 dex
Stellar density
0.470 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.018 mas
Total Proper Motion
5.600 mas/yr
PM Right Ascension
-2.65 mas/yr
PM Declination
-4.93 mas/yr
Galactic Cartesian (pc)
x = 0.303 · y = -0.658 · z = 0.689
Equatorial (J2000)
RA 294.74206° · Dec 43.53678°
Galactic ℓ, b
76.766° · 10.442°
Ecliptic λ, β
312.587° · 63.364°
HTM-20 index
-1417873825
Similar Worlds
Kepler-182 c
Sub-Neptune · F-type yellow-white
Radius 3.43 R⊕ · 5,052.4 ly
Kepler-1927 b
Sub-Neptune · F-type yellow-white
Radius 3.41 R⊕ · 3,558.4 ly
Kepler-1360 b
Sub-Neptune · F-type yellow-white
Radius 3.40 R⊕ · 4,945.4 ly
Kepler-1051 b
Sub-Neptune · F-type yellow-white
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Kepler-268 c
Sub-Neptune · F-type yellow-white
Radius 3.38 R⊕ · 2,778.4 ly
Kepler-1533 b
Sub-Neptune · F-type yellow-white
Radius 3.46 R⊕ · 3,153.3 ly