Key parameters at a glance
- A radius of 4.26 Earth radii
- A mass of 16.80 Earth masses
- Surface gravity around 0.93 g
- An orbital period of 32.626 days
- Semi-major axis 0.1910 AU
- Equilibrium temperature 506 K (233 °C)
- Distance from Earth 2,416.01 light-years
- Earth Similarity Index 0.394
- Travel time at Voyager 1 speed 42,606,398 years
1 sibling around Kepler-230
Kepler-230 b 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-230 b this | Neptune-like | 4.26 | 16.80 | 32.626 | 506 | 2014 |
| Kepler-230 c | Sub-Neptune | 2.04 | 4.82 | 91.773 | 359 | 2014 |
Kepler-230 b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#506of 574
top 88.0%
This planet
4.26R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | Kepler-230 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 4.26 | 11.21 |
| Mass (M⊕) | 1.00 | 16.80 | 317.83 |
| Density (g/cm³) | 5.51 | 1.19 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.93 | 2.53 |
| Insolation (S⊕) | 1.00 | 11.82 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 377782363
Gaia DR2
Gaia DR2 2131911750150748160
Gaia DR3
Gaia DR3 2131911750150748160
System
Kepler-230
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 32.63 Earth days (8.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1910 AU.
Transit Fingerprint
Depth
0.180 %
Duration
5.783 h
Impact parameter b
0.910
Rp / R★
0.038520
Transit midpoint (BJD)
2,455,027.1374
Photometric dip
Transit produces a flux drop of 1,805 ppm lasting ≈ 5.78 h.
Extended Orbital Architecture
Planet / star radius ratio
0.038520
Semi-major axis / stellar radius
53.950
Impact parameter (b)
0.910
Transit mid-time (BJD)
2,455,027.1374
Angular separation (arcsec)
0.25800
Eq. Temperature
506K
(233 °C)
Insolation (S⊕)
11.82
Earth = 1.00
Earth Similarity (ESI)
0.394
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
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
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-230
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,588 K — cooler than the Sun (5,778 K)
Estimated Age
1.80 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.817 R☉
Stellar Mass
0.784 M☉
Metallicity [Fe/H]
-0.21
Extended Stellar Properties
Surface gravity (log g)
4.551 dex
Stellar density
1.720 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.321 mas
Total Proper Motion
15.860 mas/yr
PM Right Ascension
-0.05 mas/yr
PM Declination
-15.86 mas/yr
Galactic Cartesian (pc)
x = 0.179 · y = -0.638 · z = 0.749
Equatorial (J2000)
RA 285.71857° · Dec 48.50580°
Galactic ℓ, b
78.784° · 18.188°
Ecliptic λ, β
302.001° · 70.204°
HTM-20 index
-15739953
Similar Worlds
HD 34445 e
Neptune-like · G-type yellow (Sun-like)
Radius 4.26 R⊕ · 150.3 ly
Kepler-1747 b
Neptune-like · G-type yellow (Sun-like)
Radius 4.27 R⊕ · 4,309.8 ly
TOI-1439 b
Neptune-like · G-type yellow (Sun-like)
Radius 4.24 R⊕ · 751.2 ly
Kepler-164 e
Neptune-like · G-type yellow (Sun-like)
Radius 4.24 R⊕ · 2,905.3 ly
Kepler-554 b
Neptune-like · G-type yellow (Sun-like)
Radius 4.29 R⊕ · 2,252.2 ly
KOI-984 b
Neptune-like · G-type yellow (Sun-like)
Radius 4.30 R⊕ · 824.1 ly