Key parameters at a glance
- A radius of 1.75 Earth radii
- A mass of 3.71 Earth masses
- Surface gravity around 1.21 g
- An orbital period of 54.281 days
- Semi-major axis 0.2970 AU
- Equilibrium temperature 604 K (331 °C)
- Distance from Earth 2,740.59 light-years
- Earth Similarity Index 0.474
- Travel time at Voyager 1 speed 48,330,262 years
2 siblings around Kepler-403
Kepler-403 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-403 b | Super-Earth | 1.25 | 2.10 | 7.031 | 1,194 | 2014 |
| Kepler-403 d | Super-Earth | 1.42 | 2.60 | 13.612 | 958 | 2016 |
| Kepler-403 c this | Super-Earth | 1.75 | 3.71 | 54.281 | 604 | 2014 |
Kepler-403 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#326of 1176
top 27.6%
This planet
1.75R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-403 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.75 | 11.21 |
| Mass (M⊕) | 1.00 | 3.71 | 317.83 |
| Density (g/cm³) | 5.51 | 3.80 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.21 | 2.53 |
| Insolation (S⊕) | 1.00 | 45.15 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 159174926
Gaia DR2
Gaia DR2 2127815657021840128
Gaia DR3
Gaia DR3 2127815657021840128
System
Kepler-403
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 54.28 Earth days (14.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2970 AU.
Transit Fingerprint
Depth
0.015 %
Duration
5.373 h
Impact parameter b
0.530
Rp / R★
0.011788
Transit midpoint (BJD)
2,454,973.7172
Photometric dip
Transit produces a flux drop of 148 ppm lasting ≈ 5.37 h.
Extended Orbital Architecture
Planet / star radius ratio
0.011788
Semi-major axis / stellar radius
41.400
Impact parameter (b)
0.530
Transit mid-time (BJD)
2,454,973.7172
Angular separation (arcsec)
0.35300
Eq. Temperature
604K
(331 °C)
Insolation (S⊕)
45.15
Earth = 1.00
Earth Similarity (ESI)
0.474
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-403
Spectral Class
F-type yellow-white
Effective Temperature
6,090 K — hotter than the Sun (5,778 K)
Estimated Age
3.09 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.329 R☉
Stellar Mass
1.299 M☉
Metallicity [Fe/H]
0.08
Extended Stellar Properties
Surface gravity (log g)
4.266 dex
Stellar density
0.220 g/cm³
Systemic radial velocity
-31.09 km/s
Metallicity ratio
[M/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.162 mas
Total Proper Motion
13.807 mas/yr
PM Right Ascension
-5.91 mas/yr
PM Declination
-12.48 mas/yr
Galactic Cartesian (pc)
x = 0.233 · y = -0.644 · z = 0.728
Equatorial (J2000)
RA 289.92143° · Dec 46.74453°
Galactic ℓ, b
78.206° · 14.899°
Ecliptic λ, β
307.762° · 67.589°
HTM-20 index
1804254281
Similar Worlds
Kepler-1100 b
Super-Earth · F-type yellow-white
Radius 1.75 R⊕ · 2,262.3 ly
Kepler-1279 b
Super-Earth · F-type yellow-white
Radius 1.75 R⊕ · 4,873.5 ly
Kepler-347 c
Super-Earth · F-type yellow-white
Radius 1.75 R⊕ · 4,236.4 ly
Kepler-1375 b
Super-Earth · F-type yellow-white
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Kepler-918 b
Super-Earth · F-type yellow-white
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Kepler-270 c
Super-Earth · F-type yellow-white
Radius 1.77 R⊕ · 3,094.5 ly