Key parameters at a glance
- A radius of 0.89 Earth radii
- A mass of 0.64 Earth masses
- Surface gravity around 0.81 g
- An orbital period of 5.795 days
- Semi-major axis 0.0510 AU
- Equilibrium temperature 534 K (261 °C)
- Distance from Earth 1,254.70 light-years
- Earth Similarity Index 0.587
- 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 b 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 this | Rocky Terrestrial | 0.89 | 0.64 | 5.795 | 534 | 2014 |
| Kepler-353 c | Super-Earth | 1.38 | 2.48 | 8.411 | 472 | 2014 |
Kepler-353 b Planet Profile
Physical Specs
Classification
Planet Type
Rocky Terrestrial
Discovery
Size rank in cohort
Rank by radius
#418of 570
top 73.2%
This planet
0.89R⊕
Rocky Terrestrial median
1.01R⊕
Nearest-size peers
| Metric | Earth | Kepler-353 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 0.89 | 11.21 |
| Mass (M⊕) | 1.00 | 0.64 | 317.83 |
| Density (g/cm³) | 5.51 | 4.99 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.81 | 2.53 |
| Insolation (S⊕) | 1.00 | 27.19 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 239229234
Gaia DR2
Gaia DR2 2076953069455745920
Gaia DR3
Gaia DR3 2076953069455745920
System
Kepler-353
Percentile among Rocky Terrestrial cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.80 Earth days (1.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0510 AU.
Transit Fingerprint
Depth
0.033 %
Duration
2.184 h
Impact parameter b
0.270
Rp / R★
0.017910
Transit midpoint (BJD)
2,454,969.7820
Photometric dip
Transit produces a flux drop of 334 ppm lasting ≈ 2.18 h.
Extended Orbital Architecture
Planet / star radius ratio
0.017910
Semi-major axis / stellar radius
14.270
Impact parameter (b)
0.270
Transit mid-time (BJD)
2,454,969.7820
Angular separation (arcsec)
0.13300
Eq. Temperature
534K
(261 °C)
Insolation (S⊕)
27.19
Earth = 1.00
Earth Similarity (ESI)
0.587
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
Similar Worlds
HD 21749 c
Rocky Terrestrial · K-type orange
Radius 0.89 R⊕ · 53.2 ly
Kepler-398 d
Rocky Terrestrial · K-type orange
Radius 0.88 R⊕ · 578.5 ly
Kepler-1759 b
Rocky Terrestrial · K-type orange
Radius 0.90 R⊕ · 1,256.8 ly
EPIC 201757695.02
Rocky Terrestrial · K-type orange
Radius 0.91 R⊕ · 1,883.9 ly
Kepler-1152 b
Rocky Terrestrial · K-type orange
Radius 0.87 R⊕ · 702.0 ly
Kepler-607 b
Rocky Terrestrial · K-type orange
Radius 0.87 R⊕ · 1,693.1 ly