Key parameters at a glance
- A radius of 2.01 Earth radii
- A mass of 4.70 Earth masses
- Surface gravity around 1.16 g
- An orbital period of 8.708 days
- Semi-major axis 0.0695 AU
- Equilibrium temperature 543 K (270 °C)
- Distance from Earth 1,730.22 light-years
- Earth Similarity Index 0.500
- Travel time at Voyager 1 speed 30,512,343 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around Kepler-415
Kepler-415 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-415 b | Rocky Terrestrial | 1.21 | 119.90 | 4.176 | 694 | 2014 |
| Kepler-415 c this | Sub-Neptune | 2.01 | 4.70 | 8.708 | 543 | 2014 |
Kepler-415 c Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1940of 1978
top 98.0%
This planet
2.01R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-415 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.01 | 11.21 |
| Mass (M⊕) | 1.00 | 4.70 | 317.83 |
| Density (g/cm³) | 5.51 | 3.18 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.16 | 2.53 |
| Insolation (S⊕) | 1.00 | 26.24 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 138365520
Gaia DR2
Gaia DR2 2052280548230453760
Gaia DR3
Gaia DR3 2052280548230453760
System
Kepler-415
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 8.71 Earth days (2.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0695 AU.
Transit Fingerprint
Depth
0.142 %
Duration
2.532 h
Impact parameter b
0.156
Rp / R★
0.037316
Transit midpoint (BJD)
2,455,196.0565
Photometric dip
Transit produces a flux drop of 1,420 ppm lasting ≈ 2.53 h.
Extended Orbital Architecture
Planet / star radius ratio
0.037316
Semi-major axis / stellar radius
27.560
Impact parameter (b)
0.156
Transit mid-time (BJD)
2,455,196.0565
Angular separation (arcsec)
0.13100
Eq. Temperature
543K
(270 °C)
Insolation (S⊕)
26.24
Earth = 1.00
Earth Similarity (ESI)
0.500
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.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Transit timing variations
Gravitational interactions from neighbours have been detected.
Discovery Paper
Primary reference
Hadden et al. 2014Instrument
Kepler CCD Array
Publication
2014-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2014 at Kepler (12 shown).
Host System: Kepler-415
Spectral Class
K-type orange
Effective Temperature
4,362 K — cooler than the Sun (5,778 K)
Estimated Age
4.90 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.643 R☉
Stellar Mass
0.670 M☉
Metallicity [Fe/H]
0.01
Extended Stellar Properties
Surface gravity (log g)
4.620 dex
Stellar density
2.408 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 12 bands
Astrometric Data
Parallax
1.857 mas
Total Proper Motion
21.469 mas/yr
PM Right Ascension
15.75 mas/yr
PM Declination
-14.58 mas/yr
Galactic Cartesian (pc)
x = 0.315 · y = -0.715 · z = 0.624
Equatorial (J2000)
RA 293.80450° · Dec 38.63905°
Galactic ℓ, b
72.037° · 8.785°
Ecliptic λ, β
307.737° · 58.999°
HTM-20 index
1118060500
Similar Worlds
Kepler-1105 b
Sub-Neptune · K-type orange
Radius 2.01 R⊕ · 1,037.2 ly
TOI-544 b
Sub-Neptune · K-type orange
Radius 2.02 R⊕ · 134.1 ly
Kepler-801 b
Sub-Neptune · K-type orange
Radius 2.00 R⊕ · 1,436.5 ly
Kepler-968 b
Sub-Neptune · K-type orange
Radius 2.00 R⊕ · 946.9 ly
Kepler-261 c
Sub-Neptune · K-type orange
Radius 2.00 R⊕ · 1,035.5 ly
K2-343 c
Sub-Neptune · K-type orange
Radius 2.02 R⊕ · 542.0 ly