Key parameters at a glance
- A radius of 2.36 Earth radii
- A mass of 6.17 Earth masses
- Surface gravity around 1.11 g
- An orbital period of 10.995 days
- Semi-major axis 0.0805 AU
- Equilibrium temperature 512 K (239 °C)
- Distance from Earth 1,369.99 light-years
- Earth Similarity Index 0.497
- Travel time at Voyager 1 speed 24,159,811 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1022 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1395of 1978
top 70.5%
This planet
2.36R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1022 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.36 | 11.21 |
| Mass (M⊕) | 1.00 | 6.17 | 317.83 |
| Density (g/cm³) | 5.51 | 2.58 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.11 | 2.53 |
| Insolation (S⊕) | 1.00 | 19.26 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 159051188
Gaia DR2
Gaia DR2 2127788822067165824
Gaia DR3
Gaia DR3 2127788822067165824
System
Kepler-1022
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 10.99 Earth days (3.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0805 AU.
Transit Fingerprint
Depth
0.088 %
Duration
1.643 h
Impact parameter b
0.265
Rp / R★
0.031603
Transit midpoint (BJD)
2,454,970.3577
Photometric dip
Transit produces a flux drop of 885 ppm lasting ≈ 1.64 h.
Extended Orbital Architecture
Planet / star radius ratio
0.031603
Semi-major axis / stellar radius
27.900
Impact parameter (b)
0.265
Transit mid-time (BJD)
2,454,970.3577
Angular separation (arcsec)
0.19200
Eq. Temperature
512K
(239 °C)
Insolation (S⊕)
19.26
Earth = 1.00
Earth Similarity (ESI)
0.497
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-1022
Spectral Class
K-type orange
Effective Temperature
4,445 K — cooler than the Sun (5,778 K)
Estimated Age
3.63 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.680 R☉
Stellar Mass
0.710 M☉
Metallicity [Fe/H]
0.06
Extended Stellar Properties
Surface gravity (log g)
4.640 dex
Stellar density
22.399 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.352 mas
Total Proper Motion
17.359 mas/yr
PM Right Ascension
5.75 mas/yr
PM Declination
-16.38 mas/yr
Galactic Cartesian (pc)
x = 0.226 · y = -0.644 · z = 0.731
Equatorial (J2000)
RA 289.35206° · Dec 46.97363°
Galactic ℓ, b
78.261° · 15.348°
Ecliptic λ, β
307.013° · 67.941°
HTM-20 index
1831413092
Similar Worlds
Kepler-1214 b
Sub-Neptune · K-type orange
Radius 2.36 R⊕ · 2,378.4 ly
Kepler-482 b
Sub-Neptune · K-type orange
Radius 2.36 R⊕ · 1,021.1 ly
K2-233 d
Sub-Neptune · K-type orange
Radius 2.36 R⊕ · 220.2 ly
TOI-2443 b
Sub-Neptune · K-type orange
Radius 2.36 R⊕ · 78.0 ly
TOI-1782.01
Sub-Neptune · K-type orange
Radius 2.37 R⊕ · 310.7 ly
Kepler-1814 b
Sub-Neptune · K-type orange
Radius 2.37 R⊕ · 2,369.0 ly