Key parameters at a glance
- A radius of 2.94 Earth radii
- A mass of 245.34 Earth masses
- Surface gravity around 28.38 g
- An orbital period of 40.101 days
- Semi-major axis 0.2360 AU
- Equilibrium temperature 583 K (310 °C)
- Distance from Earth 3,161.27 light-years
- Earth Similarity Index 0.241
- Travel time at Voyager 1 speed 55,749,056 years
3 siblings around Kepler-58
Kepler-58 d shares its host star with 3 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-58 e | Super-Earth | 1.61 | 597.80 | 4.458 | 1,212 | 2023 |
| Kepler-58 b | Sub-Neptune | 2.78 | 35.50 | 10.218 | 920 | 2012 |
| Kepler-58 c | Sub-Neptune | 2.86 | 53.00 | 15.574 | 799 | 2012 |
| Kepler-58 d this | Sub-Neptune | 2.94 | 245.34 | 40.101 | 583 | 2014 |
Kepler-58 d Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#570of 1978
top 28.8%
This planet
2.94R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-58 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.94 | 11.21 |
| Mass (M⊕) | 1.00 | 245.34 | 317.83 |
| Density (g/cm³) | 5.51 | 0.53 | 1.33 |
| Surface Gravity (g) | 1.00 | 28.38 | 2.53 |
| Insolation (S⊕) | 1.00 | 18.24 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 245.343 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 184471242
Gaia DR2
Gaia DR2 2073274618947678464
Gaia DR3
Gaia DR3 2073274618947678464
System
Kepler-58
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 40.10 Earth days (11.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2360 AU.
Transit Fingerprint
Depth
0.055 %
Duration
5.443 h
Impact parameter b
0.900
Rp / R★
0.022600
Transit midpoint (BJD)
2,454,965.7180
Photometric dip
Transit produces a flux drop of 550 ppm lasting ≈ 5.44 h.
Extended Orbital Architecture
Planet / star radius ratio
0.022600
Semi-major axis / stellar radius
23.000
Impact parameter (b)
0.900
Transit mid-time (BJD)
2,454,965.7180
Angular separation (arcsec)
0.24300
Eq. Temperature
583K
(310 °C)
Insolation (S⊕)
18.24
Earth = 1.00
Earth Similarity (ESI)
0.241
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-58
Spectral Class
F-type yellow-white
Effective Temperature
6,099 K — hotter than the Sun (5,778 K)
Estimated Age
2.14 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.127 R☉
Stellar Mass
1.024 M☉
Metallicity [Fe/H]
0.10
Extended Stellar Properties
Surface gravity (log g)
4.372 dex
Stellar density
1.150 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.004 mas
Total Proper Motion
4.187 mas/yr
PM Right Ascension
-4.18 mas/yr
PM Declination
0.14 mas/yr
Galactic Cartesian (pc)
x = 0.344 · y = -0.695 · z = 0.631
Equatorial (J2000)
RA 296.35863° · Dec 39.11520°
Galactic ℓ, b
73.419° · 7.266°
Ecliptic λ, β
311.677° · 58.800°
HTM-20 index
-1154929470
Similar Worlds
Kepler-123 b
Sub-Neptune · F-type yellow-white
Radius 2.94 R⊕ · 3,332.2 ly
Kepler-1673 b
Sub-Neptune · F-type yellow-white
Radius 2.94 R⊕ · 2,371.8 ly
Kepler-465 b
Sub-Neptune · F-type yellow-white
Radius 2.95 R⊕ · 1,803.9 ly
Kepler-1641 c
Sub-Neptune · F-type yellow-white
Radius 2.95 R⊕ · 2,806.1 ly
Kepler-1920 b
Sub-Neptune · F-type yellow-white
Radius 2.95 R⊕ · 2,889.5 ly
Kepler-769 b
Sub-Neptune · F-type yellow-white
Radius 2.92 R⊕ · 3,814.6 ly