Key parameters at a glance
- A radius of 1.63 Earth radii
- A mass of 3.29 Earth masses
- Surface gravity around 1.24 g
- An orbital period of 1.287 days
- Semi-major axis 0.0188 AU
- Equilibrium temperature 871 K (598 °C)
- Distance from Earth 1,266.74 light-years
- Earth Similarity Index 0.337
- Travel time at Voyager 1 speed 22,338,918 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-658 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#517of 1176
top 43.9%
This planet
1.63R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-658 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.63 | 11.21 |
| Mass (M⊕) | 1.00 | 3.29 | 317.83 |
| Density (g/cm³) | 5.51 | 4.17 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.24 | 2.53 |
| Insolation (S⊕) | 1.00 | 223.75 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 164456041
Gaia DR2
Gaia DR2 2107644527795544832
Gaia DR3
Gaia DR3 2107644527795544832
System
Kepler-658
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 1.29 Earth days (0.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0188 AU.
Transit Fingerprint
Depth
0.073 %
Duration
1.509 h
Impact parameter b
0.087
Rp / R★
0.025492
Transit midpoint (BJD)
2,455,002.8154
Photometric dip
Transit produces a flux drop of 729 ppm lasting ≈ 1.51 h.
Extended Orbital Architecture
Planet / star radius ratio
0.025492
Semi-major axis / stellar radius
6.766
Impact parameter (b)
0.087
Transit mid-time (BJD)
2,455,002.8154
Angular separation (arcsec)
0.04840
Eq. Temperature
871K
(598 °C)
Insolation (S⊕)
223.75
Earth = 1.00
Earth Similarity (ESI)
0.337
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.
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-658
Spectral Class
K-type orange
Effective Temperature
4,103 K — cooler than the Sun (5,778 K)
Estimated Age
3.09 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.600 R☉
Stellar Mass
0.630 M☉
Metallicity [Fe/H]
-0.04
Extended Stellar Properties
Surface gravity (log g)
4.680 dex
Stellar density
3.413 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.546 mas
Total Proper Motion
51.400 mas/yr
PM Right Ascension
-23.97 mas/yr
PM Declination
-45.47 mas/yr
Galactic Cartesian (pc)
x = 0.152 · y = -0.657 · z = 0.738
Equatorial (J2000)
RA 282.98362° · Dec 47.57839°
Galactic ℓ, b
77.204° · 19.591°
Ecliptic λ, β
296.090° · 69.844°
HTM-20 index
1610060111
Similar Worlds
Kepler-866 b
Super-Earth · K-type orange
Radius 1.63 R⊕ · 2,109.1 ly
K2-254 b
Super-Earth · K-type orange
Radius 1.63 R⊕ · 742.9 ly
Kepler-202 b
Super-Earth · K-type orange
Radius 1.63 R⊕ · 929.9 ly
Kepler-1873 b
Super-Earth · K-type orange
Radius 1.63 R⊕ · 2,677.6 ly
Kepler-247 b
Super-Earth · K-type orange
Radius 1.64 R⊕ · 2,164.7 ly
Kepler-441 b
Super-Earth · K-type orange
Radius 1.64 R⊕ · 874.1 ly