Key parameters at a glance
- A radius of 1.28 Earth radii
- A mass of 2.18 Earth masses
- Surface gravity around 1.33 g
- An orbital period of 6.700 days
- Semi-major axis 0.0671 AU
- Equilibrium temperature 806 K (533 °C)
- Distance from Earth 3,438.89 light-years
- Earth Similarity Index 0.389
- Travel time at Voyager 1 speed 60,644,840 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1420 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#1117of 1176
top 94.9%
This planet
1.28R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1420 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.28 | 11.21 |
| Mass (M⊕) | 1.00 | 2.18 | 317.83 |
| Density (g/cm³) | 5.51 | 5.71 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.33 | 2.53 |
| Insolation (S⊕) | 1.00 | 131.53 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 272184502
Gaia DR2
Gaia DR2 2077232246636173056
Gaia DR3
Gaia DR3 2077232246636173056
System
Kepler-1420
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 6.70 Earth days (1.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0671 AU.
Transit Fingerprint
Depth
0.025 %
Duration
2.704 h
Impact parameter b
0.208
Rp / R★
0.015185
Transit midpoint (BJD)
2,454,967.1472
Photometric dip
Transit produces a flux drop of 254 ppm lasting ≈ 2.70 h.
Extended Orbital Architecture
Planet / star radius ratio
0.015185
Semi-major axis / stellar radius
18.820
Impact parameter (b)
0.208
Transit mid-time (BJD)
2,454,967.1472
Angular separation (arcsec)
0.06360
Eq. Temperature
806K
(533 °C)
Insolation (S⊕)
131.53
Earth = 1.00
Earth Similarity (ESI)
0.389
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. 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-1420
Spectral Class
K-type orange
Effective Temperature
5,187 K — cooler than the Sun (5,778 K)
Estimated Age
4.90 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.790 R☉
Stellar Mass
0.820 M☉
Metallicity [Fe/H]
-0.10
Extended Stellar Properties
Surface gravity (log g)
4.570 dex
Stellar density
2.603 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.922 mas
Total Proper Motion
11.124 mas/yr
PM Right Ascension
11.03 mas/yr
PM Declination
-1.46 mas/yr
Galactic Cartesian (pc)
x = 0.324 · y = -0.659 · z = 0.679
Equatorial (J2000)
RA 296.20386° · Dec 42.77782°
Galactic ℓ, b
76.599° · 9.144°
Ecliptic λ, β
314.129° · 62.261°
HTM-20 index
1391109059
Similar Worlds
Kepler-1037 b
Super-Earth · K-type orange
Radius 1.28 R⊕ · 1,457.6 ly
Kepler-787 b
Super-Earth · K-type orange
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Kepler-776 b
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TOI-431 b
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Kepler-1008 b
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K2-165 b
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Radius 1.27 R⊕ · 439.0 ly