Key parameters at a glance
- A radius of 1.38 Earth radii
- A mass of 2.48 Earth masses
- Surface gravity around 1.30 g
- An orbital period of 8.411 days
- Semi-major axis 0.0650 AU
- Equilibrium temperature 472 K (199 °C)
- Distance from Earth 1,254.70 light-years
- Earth Similarity Index 0.639
- Travel time at Voyager 1 speed 22,126,678 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around Kepler-353
Kepler-353 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-353 b | Rocky Terrestrial | 0.89 | 0.64 | 5.795 | 534 | 2014 |
| Kepler-353 c this | Super-Earth | 1.38 | 2.48 | 8.411 | 472 | 2014 |
Kepler-353 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#953of 1176
top 81.0%
This planet
1.38R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-353 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.38 | 11.21 |
| Mass (M⊕) | 1.00 | 2.48 | 317.83 |
| Density (g/cm³) | 5.51 | 5.19 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.30 | 2.53 |
| Insolation (S⊕) | 1.00 | 16.56 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 239229234
Gaia DR2
Gaia DR2 2076953069455745920
Gaia DR3
Gaia DR3 2076953069455745920
System
Kepler-353
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 8.41 Earth days (2.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0650 AU.
Transit Fingerprint
Depth
0.076 %
Duration
2.253 h
Impact parameter b
0.460
Rp / R★
0.030884
Transit midpoint (BJD)
2,454,966.8051
Photometric dip
Transit produces a flux drop of 756 ppm lasting ≈ 2.25 h.
Extended Orbital Architecture
Planet / star radius ratio
0.030884
Semi-major axis / stellar radius
12.940
Impact parameter (b)
0.460
Transit mid-time (BJD)
2,454,966.8051
Angular separation (arcsec)
0.16900
Eq. Temperature
472K
(199 °C)
Insolation (S⊕)
16.56
Earth = 1.00
Earth Similarity (ESI)
0.639
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
Rowe et al. 2014Instrument
Kepler CCD Array
Publication
2014-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2014 at Kepler (12 shown).
Host System: Kepler-353
Spectral Class
K-type orange
Effective Temperature
3,903 K — cooler than the Sun (5,778 K)
Estimated Age
4.59 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.504 R☉
Stellar Mass
0.553 M☉
Metallicity [Fe/H]
-0.12
Extended Stellar Properties
Surface gravity (log g)
4.751 dex
Stellar density
3.410 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.571 mas
Total Proper Motion
23.812 mas/yr
PM Right Ascension
-7.53 mas/yr
PM Declination
-22.59 mas/yr
Galactic Cartesian (pc)
x = 0.337 · y = -0.666 · z = 0.666
Equatorial (J2000)
RA 296.85656° · Dec 41.75807°
Galactic ℓ, b
75.933° · 8.227°
Ecliptic λ, β
314.268° · 61.134°
HTM-20 index
-821193373
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