Key parameters at a glance
- A radius of 1.11 Earth radii
- A mass of 1.41 Earth masses
- Surface gravity around 1.14 g
- An orbital period of 24.088 days
- Semi-major axis 0.1350 AU
- Equilibrium temperature 386 K (113 °C)
- Distance from Earth 1,058.09 light-years
- Earth Similarity Index 0.785
- Travel time at Voyager 1 speed 18,659,460 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around Kepler-333
Kepler-333 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-333 b | Super-Earth | 1.32 | 28.20 | 12.551 | 480 | 2014 |
| Kepler-333 c this | Rocky Terrestrial | 1.11 | 1.41 | 24.088 | 386 | 2014 |
Kepler-333 c Planet Profile
Physical Specs
Classification
Planet Type
Rocky Terrestrial
Discovery
Size rank in cohort
Rank by radius
#209of 570
top 36.5%
This planet
1.11R⊕
Rocky Terrestrial median
1.01R⊕
Nearest-size peers
| Metric | Earth | Kepler-333 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.11 | 11.21 |
| Mass (M⊕) | 1.00 | 1.41 | 317.83 |
| Density (g/cm³) | 5.51 | 5.67 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.14 | 2.53 |
| Insolation (S⊕) | 1.00 | 7.05 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 137556197
Gaia DR2
Gaia DR2 2053581167404822272
Gaia DR3
Gaia DR3 2053581167404822272
System
Kepler-333
Percentile among Rocky Terrestrial cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 24.09 Earth days (6.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1350 AU.
Transit Fingerprint
Depth
0.040 %
Duration
3.990 h
Impact parameter b
0.740
Rp / R★
0.017719
Transit midpoint (BJD)
2,454,967.4255
Photometric dip
Transit produces a flux drop of 399 ppm lasting ≈ 3.99 h.
Extended Orbital Architecture
Planet / star radius ratio
0.017719
Semi-major axis / stellar radius
31.000
Impact parameter (b)
0.740
Transit mid-time (BJD)
2,454,967.4255
Angular separation (arcsec)
0.41600
Eq. Temperature
386K
(113 °C)
Insolation (S⊕)
7.05
Earth = 1.00
Earth Similarity (ESI)
0.785
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-333
Spectral Class
K-type orange
Effective Temperature
4,259 K — cooler than the Sun (5,778 K)
Estimated Age
3.24 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.534 R☉
Stellar Mass
0.601 M☉
Metallicity [Fe/H]
0.05
Extended Stellar Properties
Surface gravity (log g)
4.732 dex
Stellar density
2.783 g/cm³
Metallicity ratio
[M/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
3.054 mas
Total Proper Motion
13.910 mas/yr
PM Right Ascension
7.20 mas/yr
PM Declination
-11.90 mas/yr
Galactic Cartesian (pc)
x = 0.287 · y = -0.699 · z = 0.655
Equatorial (J2000)
RA 292.28612° · Dec 40.91354°
Galactic ℓ, b
73.547° · 10.864°
Ecliptic λ, β
306.944° · 61.525°
HTM-20 index
1768355407
Similar Worlds
Kepler-124 d
Rocky Terrestrial · K-type orange
Radius 1.11 R⊕ · 1,370.0 ly
Kepler-327 b
Rocky Terrestrial · K-type orange
Radius 1.11 R⊕ · 789.3 ly
Kepler-1692 b
Rocky Terrestrial · K-type orange
Radius 1.11 R⊕ · 1,927.6 ly
Kepler-1966 b
Rocky Terrestrial · K-type orange
Radius 1.10 R⊕ · 1,580.6 ly
Kepler-1164 b
Rocky Terrestrial · K-type orange
Radius 1.12 R⊕ · 1,407.8 ly
K2-156 b
Rocky Terrestrial · K-type orange
Radius 1.10 R⊕ · 489.9 ly