Key parameters at a glance
- A radius of 0.98 Earth radii
- A mass of 0.90 Earth masses
- Surface gravity around 0.94 g
- An orbital period of 2.414 days
- Semi-major axis 0.0315 AU
- Equilibrium temperature 953 K (680 °C)
- Distance from Earth 492.92 light-years
- Earth Similarity Index 0.339
- Travel time at Voyager 1 speed 8,692,578 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1053 b Planet Profile
Physical Specs
Classification
Planet Type
Rocky Terrestrial
Discovery
Size rank in cohort
Rank by radius
#355of 570
top 62.1%
This planet
0.98R⊕
Rocky Terrestrial median
1.01R⊕
Nearest-size peers
| Metric | Earth | Kepler-1053 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 0.98 | 11.21 |
| Mass (M⊕) | 1.00 | 0.90 | 317.83 |
| Density (g/cm³) | 5.51 | 5.28 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.94 | 2.53 |
| Insolation (S⊕) | 1.00 | 139.82 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 137152419
Gaia DR2
Gaia DR2 2052973309272223232
Gaia DR3
Gaia DR3 2052973309272223232
System
Kepler-1053
Percentile among Rocky Terrestrial cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.41 Earth days (0.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0315 AU.
Transit Fingerprint
Depth
0.020 %
Duration
1.225 h
Impact parameter b
0.284
Rp / R★
0.013191
Transit midpoint (BJD)
2,454,965.4289
Photometric dip
Transit produces a flux drop of 203 ppm lasting ≈ 1.22 h.
Extended Orbital Architecture
Planet / star radius ratio
0.013191
Semi-major axis / stellar radius
14.360
Impact parameter (b)
0.284
Transit mid-time (BJD)
2,454,965.4289
Angular separation (arcsec)
0.20800
Eq. Temperature
953K
(680 °C)
Insolation (S⊕)
139.82
Earth = 1.00
Earth Similarity (ESI)
0.339
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.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Transit timing variations
Gravitational interactions from neighbours have been detected.
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-1053
Spectral Class
K-type orange
Effective Temperature
4,529 K — cooler than the Sun (5,778 K)
Estimated Age
3.09 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.690 R☉
Stellar Mass
0.740 M☉
Metallicity [Fe/H]
0.10
Extended Stellar Properties
Surface gravity (log g)
4.630 dex
Stellar density
4.226 g/cm³
Systemic radial velocity
-15.05 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
6.588 mas
Total Proper Motion
7.431 mas/yr
PM Right Ascension
-0.96 mas/yr
PM Declination
-7.37 mas/yr
Galactic Cartesian (pc)
x = 0.283 · y = -0.722 · z = 0.631
Equatorial (J2000)
RA 291.41863° · Dec 39.12737°
Galactic ℓ, b
71.618° · 10.661°
Ecliptic λ, β
304.537° · 60.024°
HTM-20 index
1513647068
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