Key parameters at a glance
- A radius of 1.66 Earth radii
- A mass of 3.39 Earth masses
- Surface gravity around 1.23 g
- An orbital period of 12.131 days
- Semi-major axis 0.1100 AU
- Equilibrium temperature 901 K (628 °C)
- Distance from Earth 3,453.08 light-years
- Earth Similarity Index 0.323
- Travel time at Voyager 1 speed 60,895,041 years
2 siblings around Kepler-394
Kepler-394 c shares its host star with 2 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-394 d | Super-Earth | 1.50 | 2.86 | 5.614 | 1,165 | 2021 |
| Kepler-394 b | Super-Earth | 1.60 | 3.19 | 8.005 | 1,035 | 2014 |
| Kepler-394 c this | Super-Earth | 1.66 | 3.39 | 12.131 | 901 | 2014 |
Kepler-394 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#469of 1176
top 39.8%
This planet
1.66R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-394 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.66 | 11.21 |
| Mass (M⊕) | 1.00 | 3.39 | 317.83 |
| Density (g/cm³) | 5.51 | 4.07 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.23 | 2.53 |
| Insolation (S⊕) | 1.00 | 94.53 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 27777414
Gaia DR2
Gaia DR2 2135378231142791808
Gaia DR3
Gaia DR3 2135378231142791808
System
Kepler-394
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 12.13 Earth days (3.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1100 AU.
Transit Fingerprint
Depth
0.021 %
Duration
3.819 h
Impact parameter b
0.450
Rp / R★
0.013392
Transit midpoint (BJD)
2,454,972.8973
Photometric dip
Transit produces a flux drop of 211 ppm lasting ≈ 3.82 h.
Extended Orbital Architecture
Planet / star radius ratio
0.013392
Semi-major axis / stellar radius
24.360
Impact parameter (b)
0.450
Transit mid-time (BJD)
2,454,972.8973
Angular separation (arcsec)
0.10400
Eq. Temperature
901K
(628 °C)
Insolation (S⊕)
94.53
Earth = 1.00
Earth Similarity (ESI)
0.323
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-394
Spectral Class
F-type yellow-white
Effective Temperature
6,402 K — hotter than the Sun (5,778 K)
Estimated Age
0.25 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.132 R☉
Stellar Mass
0.870 M☉
Metallicity [Fe/H]
-0.30
Extended Stellar Properties
Surface gravity (log g)
4.408 dex
Stellar density
0.910 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.916 mas
Total Proper Motion
4.829 mas/yr
PM Right Ascension
3.22 mas/yr
PM Declination
-3.60 mas/yr
Galactic Cartesian (pc)
x = 0.281 · y = -0.568 · z = 0.774
Equatorial (J2000)
RA 296.30198° · Dec 50.67231°
Galactic ℓ, b
83.726° · 12.803°
Ecliptic λ, β
322.743° · 69.341°
HTM-20 index
-17145068
Similar Worlds
Kepler-379 b
Super-Earth · F-type yellow-white
Radius 1.66 R⊕ · 2,385.1 ly
Kepler-520 b
Super-Earth · F-type yellow-white
Radius 1.66 R⊕ · 2,034.9 ly
Kepler-1106 b
Super-Earth · F-type yellow-white
Radius 1.65 R⊕ · 3,557.4 ly
Kepler-360 b
Super-Earth · F-type yellow-white
Radius 1.65 R⊕ · 2,857.3 ly
Kepler-1511 b
Super-Earth · F-type yellow-white
Radius 1.68 R⊕ · 4,812.8 ly
Kepler-188 b
Super-Earth · F-type yellow-white
Radius 1.68 R⊕ · 3,159.0 ly