Key parameters at a glance
- A radius of 1.43 Earth radii
- A mass of 2.63 Earth masses
- Surface gravity around 1.29 g
- An orbital period of 2.165 days
- Semi-major axis 0.0273 AU
- Equilibrium temperature 783 K (510 °C)
- Distance from Earth 1,519.32 light-years
- Earth Similarity Index 0.392
- Travel time at Voyager 1 speed 26,793,197 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1366 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#864of 1176
top 73.4%
This planet
1.43R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1366 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.43 | 11.21 |
| Mass (M⊕) | 1.00 | 2.63 | 317.83 |
| Density (g/cm³) | 5.51 | 4.94 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.29 | 2.53 |
| Insolation (S⊕) | 1.00 | 134.98 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 120421638
Gaia DR2
Gaia DR2 2104065209429419520
Gaia DR3
Gaia DR3 2104065209430717568
System
Kepler-1366
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.16 Earth days (0.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0273 AU.
Transit Fingerprint
Depth
0.053 %
Duration
1.385 h
Impact parameter b
0.338
Rp / R★
0.021722
Transit midpoint (BJD)
2,454,964.8323
Photometric dip
Transit produces a flux drop of 525 ppm lasting ≈ 1.38 h.
Extended Orbital Architecture
Planet / star radius ratio
0.021722
Semi-major axis / stellar radius
12.170
Impact parameter (b)
0.338
Transit mid-time (BJD)
2,454,964.8323
Angular separation (arcsec)
0.05860
Eq. Temperature
783K
(510 °C)
Insolation (S⊕)
134.98
Earth = 1.00
Earth Similarity (ESI)
0.392
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-1366
Spectral Class
K-type orange
Effective Temperature
4,070 K — cooler than the Sun (5,778 K)
Estimated Age
3.98 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.600 R☉
Stellar Mass
0.620 M☉
Metallicity [Fe/H]
-0.02
Extended Stellar Properties
Surface gravity (log g)
4.680 dex
Stellar density
2.874 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 12 bands
Astrometric Data
Parallax
2.119 mas
Total Proper Motion
9.190 mas/yr
PM Right Ascension
-5.73 mas/yr
PM Declination
-7.19 mas/yr
Galactic Cartesian (pc)
x = 0.194 · y = -0.723 · z = 0.663
Equatorial (J2000)
RA 285.06488° · Dec 41.55485°
Galactic ℓ, b
71.838° · 16.072°
Ecliptic λ, β
295.977° · 63.642°
HTM-20 index
2122460748
Similar Worlds
K2-36 b
Super-Earth · K-type orange
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Kepler-1259 b
Super-Earth · K-type orange
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Kepler-876 b
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Kepler-1825 b
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Kepler-763 c
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GJ 9827 b
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Radius 1.44 R⊕ · 96.7 ly