Key parameters at a glance
- A radius of 1.38 Earth radii
- A mass of 2.48 Earth masses
- Surface gravity around 1.30 g
- An orbital period of 2.949 days
- Semi-major axis 0.0369 AU
- Equilibrium temperature 1,027 K (754 °C)
- Distance from Earth 2,006.61 light-years
- Earth Similarity Index 0.298
- Travel time at Voyager 1 speed 35,386,615 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1120 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#953of 1176
top 81.0%
This planet
1.38R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1120 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.38 | 11.21 |
| Mass (M⊕) | 1.00 | 2.48 | 317.83 |
| Density (g/cm³) | 5.51 | 5.19 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.30 | 2.53 |
| Insolation (S⊕) | 1.00 | 206.87 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 159573412
Gaia DR2
Gaia DR2 2101941434002832000
Gaia DR3
Gaia DR3 2101941434002832000
System
Kepler-1120
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.95 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0369 AU.
Transit Fingerprint
Depth
0.036 %
Duration
2.039 h
Impact parameter b
0.087
Rp / R★
0.017164
Transit midpoint (BJD)
2,454,966.1364
Photometric dip
Transit produces a flux drop of 358 ppm lasting ≈ 2.04 h.
Extended Orbital Architecture
Planet / star radius ratio
0.017164
Semi-major axis / stellar radius
11.283
Impact parameter (b)
0.087
Transit mid-time (BJD)
2,454,966.1364
Angular separation (arcsec)
0.06000
Eq. Temperature
1,027K
(754 °C)
Insolation (S⊕)
206.87
Earth = 1.00
Earth Similarity (ESI)
0.298
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched. Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
Morton et al. 2016Instrument
Kepler CCD Array
Publication
2016-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at Kepler (12 shown).
Host System: Kepler-1120
Spectral Class
K-type orange
Effective Temperature
4,904 K — cooler than the Sun (5,778 K)
Estimated Age
4.68 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.740 R☉
Stellar Mass
0.780 M☉
Metallicity [Fe/H]
-0.04
Extended Stellar Properties
Surface gravity (log g)
4.600 dex
Stellar density
3.065 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.597 mas
Total Proper Motion
12.320 mas/yr
PM Right Ascension
-8.14 mas/yr
PM Declination
-9.25 mas/yr
Galactic Cartesian (pc)
x = 0.264 · y = -0.691 · z = 0.673
Equatorial (J2000)
RA 290.91445° · Dec 42.28655°
Galactic ℓ, b
74.346° · 12.389°
Ecliptic λ, β
305.780° · 63.151°
HTM-20 index
380047442
Similar Worlds
Kepler-1315 b
Super-Earth · K-type orange
Radius 1.38 R⊕ · 1,568.4 ly
K2-270 b
Super-Earth · K-type orange
Radius 1.38 R⊕ · 914.9 ly
K2-349 b
Super-Earth · K-type orange
Radius 1.38 R⊕ · 1,479.3 ly
Kepler-353 c
Super-Earth · K-type orange
Radius 1.38 R⊕ · 1,254.7 ly
Kepler-224 b
Super-Earth · K-type orange
Radius 1.39 R⊕ · 2,550.8 ly
Kepler-240 b
Super-Earth · K-type orange
Radius 1.37 R⊕ · 2,436.1 ly