Key parameters at a glance
- A radius of 2.30 Earth radii
- A mass of 5.90 Earth masses
- Surface gravity around 1.12 g
- An orbital period of 180.922 days
- Semi-major axis 0.6135 AU
- Equilibrium temperature 302 K (29 °C)
- Distance from Earth 3,077.10 light-years
- Earth Similarity Index 0.767
- Travel time at Voyager 1 speed 54,264,642 years
1 sibling around Kepler-1052
Kepler-1052 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-1052 b | Sub-Neptune | 2.93 | 8.91 | 34.854 | 522 | 2016 |
| Kepler-1052 c this | Sub-Neptune | 2.30 | 5.90 | 180.922 | 302 | 2023 |
Kepler-1052 c Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1499of 1978
top 75.7%
This planet
2.30R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1052 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.30 | 11.21 |
| Mass (M⊕) | 1.00 | 5.90 | 317.83 |
| Density (g/cm³) | 5.51 | 2.66 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.12 | 2.53 |
| Insolation (S⊕) | 1.00 | 1.96 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 271661839
Gaia DR2
Gaia DR2 2080466185207274880
Gaia DR3
Gaia DR3 2080466185207274880
System
Kepler-1052
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 180.92 Earth days (49.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.6135 AU.
Transit Fingerprint
Depth
0.074 %
Duration
8.990 h
Impact parameter b
0.025
Rp / R★
0.024850
Transit midpoint (BJD)
2,455,067.3344
Photometric dip
Transit produces a flux drop of 742 ppm lasting ≈ 8.99 h.
Extended Orbital Architecture
Planet / star radius ratio
0.024850
Semi-major axis / stellar radius
157.500
Impact parameter (b)
0.025
Transit mid-time (BJD)
2,455,067.3344
Angular separation (arcsec)
0.65000
Eq. Temperature
302K
(29 °C)
Insolation (S⊕)
1.96
Earth = 1.00
Earth Similarity (ESI)
0.767
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure.
Discovery Paper
Primary reference
Valizadegan et al. 2023Instrument
Kepler CCD Array
Publication
2023-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Kepler (12 shown).
Host System: Kepler-1052
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,818 K — hotter than the Sun (5,778 K)
Estimated Age
1.20 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.848 R☉
Stellar Mass
0.937 M☉
Metallicity [Fe/H]
-0.22
Extended Stellar Properties
Surface gravity (log g)
4.554 dex
Stellar density
2.258 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.031 mas
Total Proper Motion
4.568 mas/yr
PM Right Ascension
-0.53 mas/yr
PM Declination
-4.54 mas/yr
Galactic Cartesian (pc)
x = 0.294 · y = -0.621 · z = 0.727
Equatorial (J2000)
RA 295.34273° · Dec 46.60221°
Galactic ℓ, b
79.733° · 11.487°
Ecliptic λ, β
316.332° · 66.013°
HTM-20 index
-1257896792
Similar Worlds
Kepler-1073 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.30 R⊕ · 2,641.5 ly
K2-183 d
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.30 R⊕ · 1,073.2 ly
Kepler-770 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.30 R⊕ · 3,034.7 ly
EPIC 212624936 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.30 R⊕ · 1,832.8 ly
K2-183 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.30 R⊕ · 1,073.2 ly
K2-138 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.30 R⊕ · 660.7 ly