Key parameters at a glance
- A radius of 1.79 Earth radii
- A mass of 3.86 Earth masses
- Surface gravity around 1.20 g
- An orbital period of 12.516 days
- Semi-major axis 0.1100 AU
- Equilibrium temperature 848 K (575 °C)
- Distance from Earth 6,054.37 light-years
- Earth Similarity Index 0.336
- Travel time at Voyager 1 speed 106,768,784 years
1 sibling around Kepler-366
Kepler-366 c 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-366 b | Super-Earth | 1.46 | 2.73 | 3.282 | 1,326 | 2014 |
| Kepler-366 c this | Super-Earth | 1.79 | 3.86 | 12.516 | 848 | 2014 |
Kepler-366 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#271of 1176
top 23.0%
This planet
1.79R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-366 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.79 | 11.21 |
| Mass (M⊕) | 1.00 | 3.86 | 317.83 |
| Density (g/cm³) | 5.51 | 3.70 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.20 | 2.53 |
| Insolation (S⊕) | 1.00 | 286.60 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 27914560
Gaia DR2
Gaia DR2 2086824935828106496
Gaia DR3
Gaia DR3 2086824935828106496
System
Kepler-366
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 12.52 Earth days (3.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1100 AU.
Transit Fingerprint
Depth
0.026 %
Duration
4.838 h
Impact parameter b
0.200
Rp / R★
0.015832
Transit midpoint (BJD)
2,454,968.0286
Photometric dip
Transit produces a flux drop of 263 ppm lasting ≈ 4.84 h.
Extended Orbital Architecture
Planet / star radius ratio
0.015832
Semi-major axis / stellar radius
20.000
Impact parameter (b)
0.200
Transit mid-time (BJD)
2,454,968.0286
Angular separation (arcsec)
0.05930
Eq. Temperature
848K
(575 °C)
Insolation (S⊕)
286.60
Earth = 1.00
Earth Similarity (ESI)
0.336
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-366
Spectral Class
F-type yellow-white
Effective Temperature
6,209 K — hotter than the Sun (5,778 K)
Estimated Age
6.61 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.048 R☉
Stellar Mass
1.088 M☉
Metallicity [Fe/H]
-0.06
Extended Stellar Properties
Surface gravity (log g)
4.452 dex
Stellar density
0.220 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.510 mas
Total Proper Motion
2.276 mas/yr
PM Right Ascension
1.28 mas/yr
PM Declination
1.88 mas/yr
Galactic Cartesian (pc)
x = 0.296 · y = -0.584 · z = 0.756
Equatorial (J2000)
RA 296.85203° · Dec 49.08444°
Galactic ℓ, b
82.457° · 11.750°
Ecliptic λ, β
321.472° · 67.782°
HTM-20 index
1941055679
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