Key parameters at a glance
- A radius of 2.12 Earth radii
- A mass of 5.14 Earth masses
- Surface gravity around 1.14 g
- An orbital period of 20.497 days
- Semi-major axis 0.1527 AU
- Equilibrium temperature 843 K (570 °C)
- Distance from Earth 4,899.91 light-years
- Earth Similarity Index 0.319
- Travel time at Voyager 1 speed 86,409,852 years
3 siblings around Kepler-758
Kepler-758 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-758 c | Super-Earth | 1.69 | 3.50 | 4.758 | 1,372 | 2016 |
| Kepler-758 e | Super-Earth | 1.53 | 2.96 | 8.193 | 1,144 | 2016 |
| Kepler-758 b | Sub-Neptune | 2.48 | 6.71 | 12.110 | 1,005 | 2016 |
| Kepler-758 d this | Sub-Neptune | 2.12 | 5.14 | 20.497 | 843 | 2016 |
Kepler-758 d Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1782of 1978
top 90.0%
This planet
2.12R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-758 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.12 | 11.21 |
| Mass (M⊕) | 1.00 | 5.14 | 317.83 |
| Density (g/cm³) | 5.51 | 2.96 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.14 | 2.53 |
| Insolation (S⊕) | 1.00 | 173.17 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 137968594
Gaia DR2
Gaia DR2 2053552270863859712
Gaia DR3
Gaia DR3 2053552270863859712
System
Kepler-758
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 20.50 Earth days (5.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1527 AU.
Transit Fingerprint
Depth
0.024 %
Duration
6.380 h
Impact parameter b
0.420
Rp / R★
0.013625
Transit midpoint (BJD)
2,454,980.4533
Photometric dip
Transit produces a flux drop of 243 ppm lasting ≈ 6.38 h.
Extended Orbital Architecture
Planet / star radius ratio
0.013625
Semi-major axis / stellar radius
24.871
Impact parameter (b)
0.420
Transit mid-time (BJD)
2,454,980.4533
Angular separation (arcsec)
0.10200
Eq. Temperature
843K
(570 °C)
Insolation (S⊕)
173.17
Earth = 1.00
Earth Similarity (ESI)
0.319
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
Morton et al. 2016Instrument
Kepler CCD Array
Publication
2016-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at Kepler (12 shown).
Host System: Kepler-758
Spectral Class
F-type yellow-white
Effective Temperature
6,228 K — hotter than the Sun (5,778 K)
Estimated Age
3.80 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.420 R☉
Stellar Mass
1.160 M☉
Metallicity [Fe/H]
-0.10
Extended Stellar Properties
Surface gravity (log g)
4.190 dex
Stellar density
0.330 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.637 mas
Total Proper Motion
6.786 mas/yr
PM Right Ascension
-1.13 mas/yr
PM Declination
-6.69 mas/yr
Galactic Cartesian (pc)
x = 0.295 · y = -0.693 · z = 0.658
Equatorial (J2000)
RA 293.08461° · Dec 41.13540°
Galactic ℓ, b
74.025° · 10.427°
Ecliptic λ, β
308.290° · 61.541°
HTM-20 index
1755141653
Similar Worlds
Kepler-544 b
Sub-Neptune · F-type yellow-white
Radius 2.12 R⊕ · 3,141.5 ly
Kepler-814 b
Sub-Neptune · F-type yellow-white
Radius 2.12 R⊕ · 6,705.0 ly
Kepler-53 d
Sub-Neptune · F-type yellow-white
Radius 2.12 R⊕ · 4,455.5 ly
K2-177 b
Sub-Neptune · F-type yellow-white
Radius 2.12 R⊕ · 1,605.2 ly
Kepler-1580 b
Sub-Neptune · F-type yellow-white
Radius 2.11 R⊕ · 3,268.1 ly
Kepler-930 b
Sub-Neptune · F-type yellow-white
Radius 2.13 R⊕ · 2,767.1 ly