Key parameters at a glance
- A radius of 2.15 Earth radii
- A mass of 5.27 Earth masses
- Surface gravity around 1.14 g
- An orbital period of 18.931 days
- Semi-major axis 0.1370 AU
- Equilibrium temperature 766 K (493 °C)
- Distance from Earth 1,377.18 light-years
- Earth Similarity Index 0.350
- Travel time at Voyager 1 speed 24,286,580 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1013 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1741of 1978
top 88.0%
This planet
2.15R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1013 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.15 | 11.21 |
| Mass (M⊕) | 1.00 | 5.27 | 317.83 |
| Density (g/cm³) | 5.51 | 2.91 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.14 | 2.53 |
| Insolation (S⊕) | 1.00 | 16.10 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 159304741
Gaia DR2
Gaia DR2 2126890417989112832
Gaia DR3
Gaia DR3 2126890417989112832
System
Kepler-1013
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 18.93 Earth days (5.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1370 AU.
Transit Fingerprint
Depth
0.072 %
Duration
3.344 h
Impact parameter b
0.702
Rp / R★
0.026222
Transit midpoint (BJD)
2,454,976.2524
Photometric dip
Transit produces a flux drop of 720 ppm lasting ≈ 3.34 h.
Extended Orbital Architecture
Planet / star radius ratio
0.026222
Semi-major axis / stellar radius
25.000
Impact parameter (b)
0.702
Transit mid-time (BJD)
2,454,976.2524
Angular separation (arcsec)
0.32400
Eq. Temperature
766K
(493 °C)
Insolation (S⊕)
16.10
Earth = 1.00
Earth Similarity (ESI)
0.350
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-1013
Spectral Class
K-type orange
Effective Temperature
4,954 K — cooler than the Sun (5,778 K)
Estimated Age
4.27 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.760 R☉
Stellar Mass
0.810 M☉
Metallicity [Fe/H]
0.04
Extended Stellar Properties
Surface gravity (log g)
4.590 dex
Stellar density
1.795 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.339 mas
Total Proper Motion
10.659 mas/yr
PM Right Ascension
1.81 mas/yr
PM Declination
10.50 mas/yr
Galactic Cartesian (pc)
x = 0.247 · y = -0.670 · z = 0.700
Equatorial (J2000)
RA 290.24810° · Dec 44.43529°
Galactic ℓ, b
76.132° · 13.740°
Ecliptic λ, β
306.317° · 65.341°
HTM-20 index
616336460
Similar Worlds
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Sub-Neptune · K-type orange
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K2-71 b
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Kepler-61 b
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Kepler-566 b
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Kepler-1455 b
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Kepler-437 b
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Radius 2.14 R⊕ · 991.5 ly