Key parameters at a glance
- A radius of 2.48 Earth radii
- A mass of 6.71 Earth masses
- Surface gravity around 1.09 g
- An orbital period of 19.330 days
- Semi-major axis 0.1338 AU
- Equilibrium temperature 529 K (256 °C)
- Distance from Earth 2,474.55 light-years
- Earth Similarity Index 0.474
- Travel time at Voyager 1 speed 43,638,724 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1030 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1212of 1978
top 61.2%
This planet
2.48R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1030 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.48 | 11.21 |
| Mass (M⊕) | 1.00 | 6.71 | 317.83 |
| Density (g/cm³) | 5.51 | 2.42 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.09 | 2.53 |
| Insolation (S⊕) | 1.00 | 16.88 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 270617362
Gaia DR2
Gaia DR2 2128009617747394432
Gaia DR3
Gaia DR3 2128009617747394432
System
Kepler-1030
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 19.33 Earth days (5.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1338 AU.
Transit Fingerprint
Depth
0.104 %
Duration
3.770 h
Impact parameter b
0.009
Rp / R★
0.029641
Transit midpoint (BJD)
2,454,966.2682
Photometric dip
Transit produces a flux drop of 1,040 ppm lasting ≈ 3.77 h.
Extended Orbital Architecture
Planet / star radius ratio
0.029641
Semi-major axis / stellar radius
39.980
Impact parameter (b)
0.009
Transit mid-time (BJD)
2,454,966.2682
Angular separation (arcsec)
0.17600
Eq. Temperature
529K
(256 °C)
Insolation (S⊕)
16.88
Earth = 1.00
Earth Similarity (ESI)
0.474
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-1030
Spectral Class
K-type orange
Effective Temperature
4,983 K — cooler than the Sun (5,778 K)
Estimated Age
4.37 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.760 R☉
Stellar Mass
0.800 M☉
Metallicity [Fe/H]
-0.01
Extended Stellar Properties
Surface gravity (log g)
4.590 dex
Stellar density
2.318 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.290 mas
Total Proper Motion
13.409 mas/yr
PM Right Ascension
-0.06 mas/yr
PM Declination
-13.41 mas/yr
Galactic Cartesian (pc)
x = 0.280 · y = -0.638 · z = 0.717
Equatorial (J2000)
RA 293.68191° · Dec 45.81752°
Galactic ℓ, b
78.485° · 12.153°
Ecliptic λ, β
312.983° · 65.760°
HTM-20 index
-1351300413
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