Key parameters at a glance
- A radius of 1.42 Earth radii
- A mass of 2.59 Earth masses
- Surface gravity around 1.29 g
- An orbital period of 7.128 days
- Semi-major axis 0.0692 AU
- Equilibrium temperature 784 K (511 °C)
- Distance from Earth 1,905.19 light-years
- Earth Similarity Index 0.393
- Travel time at Voyager 1 speed 33,598,105 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around Kepler-1038
Kepler-1038 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-1038 c this | Super-Earth | 1.42 | 2.59 | 7.128 | 784 | 2021 |
| Kepler-1038 b | Sub-Neptune | 3.53 | 12.20 | 148.460 | 285 | 2016 |
Kepler-1038 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#899of 1176
top 76.4%
This planet
1.42R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1038 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.42 | 11.21 |
| Mass (M⊕) | 1.00 | 2.59 | 317.83 |
| Density (g/cm³) | 5.51 | 5.01 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.29 | 2.53 |
| Insolation (S⊕) | 1.00 | 89.24 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 268483792
Gaia DR2
Gaia DR2 2079028676836456960
Gaia DR3
Gaia DR3 2079028676836456960
System
Kepler-1038
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 7.13 Earth days (2.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0692 AU.
Transit Fingerprint
Depth
0.023 %
Duration
2.491 h
Impact parameter b
0.127
Rp / R★
0.014147
Transit midpoint (BJD)
2,454,969.0059
Photometric dip
Transit produces a flux drop of 229 ppm lasting ≈ 2.49 h.
Extended Orbital Architecture
Planet / star radius ratio
0.014147
Semi-major axis / stellar radius
22.380
Impact parameter (b)
0.127
Transit mid-time (BJD)
2,454,969.0059
Angular separation (arcsec)
0.11800
Eq. Temperature
784K
(511 °C)
Insolation (S⊕)
89.24
Earth = 1.00
Earth Similarity (ESI)
0.393
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
Valizadegan et al. 2022Instrument
Kepler CCD Array
Publication
2022-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2021 at Kepler (12 shown).
Host System: Kepler-1038
Spectral Class
K-type orange
Effective Temperature
5,159 K — cooler than the Sun (5,778 K)
Estimated Age
14.00 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.821 R☉
Stellar Mass
0.868 M☉
Metallicity [Fe/H]
0.16
Extended Stellar Properties
Surface gravity (log g)
4.548 dex
Stellar density
3.961 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.684 mas
Total Proper Motion
11.679 mas/yr
PM Right Ascension
-9.46 mas/yr
PM Declination
-6.84 mas/yr
Galactic Cartesian (pc)
x = 0.348 · y = -0.628 · z = 0.696
Equatorial (J2000)
RA 298.97215° · Dec 44.13235°
Galactic ℓ, b
78.791° · 8.061°
Ecliptic λ, β
319.288° · 62.701°
HTM-20 index
1955328165
Similar Worlds
Kepler-1813 b
Super-Earth · K-type orange
Radius 1.41 R⊕ · —
Kepler-763 c
Super-Earth · K-type orange
Radius 1.42 R⊕ · 3,139.1 ly
K2-128 b
Super-Earth · K-type orange
Radius 1.42 R⊕ · 373.9 ly
Kepler-1075 b
Super-Earth · K-type orange
Radius 1.42 R⊕ · 950.0 ly
TOI-286 b
Super-Earth · K-type orange
Radius 1.42 R⊕ · 193.2 ly
Kepler-1825 b
Super-Earth · K-type orange
Radius 1.42 R⊕ · 1,403.3 ly