Key parameters at a glance
- A radius of 1.84 Earth radii
- A mass of 4.04 Earth masses
- Surface gravity around 1.19 g
- An orbital period of 18.794 days
- Semi-major axis 0.1110 AU
- Equilibrium temperature 412 K (139 °C)
- Distance from Earth 1,830.06 light-years
- Earth Similarity Index 0.654
- Travel time at Voyager 1 speed 32,273,187 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around Kepler-225
Kepler-225 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-225 b | Rocky Terrestrial | 1.20 | 1.87 | 6.739 | 579 | 2014 |
| Kepler-225 c this | Super-Earth | 1.84 | 4.04 | 18.794 | 412 | 2014 |
Kepler-225 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#201of 1176
top 17.0%
This planet
1.84R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-225 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.84 | 11.21 |
| Mass (M⊕) | 1.00 | 4.04 | 317.83 |
| Density (g/cm³) | 5.51 | 3.56 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.19 | 2.53 |
| Insolation (S⊕) | 1.00 | 9.90 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 63203294
Gaia DR2
Gaia DR2 2128469007448159232
Gaia DR3
Gaia DR3 2128469007448159232
System
Kepler-225
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 18.79 Earth days (5.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1110 AU.
Transit Fingerprint
Depth
0.153 %
Duration
3.279 h
Impact parameter b
0.320
Rp / R★
0.037576
Transit midpoint (BJD)
2,455,010.7935
Photometric dip
Transit produces a flux drop of 1,529 ppm lasting ≈ 3.28 h.
Extended Orbital Architecture
Planet / star radius ratio
0.037576
Semi-major axis / stellar radius
45.470
Impact parameter (b)
0.320
Transit mid-time (BJD)
2,455,010.7935
Angular separation (arcsec)
0.19800
Eq. Temperature
412K
(139 °C)
Insolation (S⊕)
9.90
Earth = 1.00
Earth Similarity (ESI)
0.654
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-225
Spectral Class
M-type red dwarf
Effective Temperature
3,682 K — cooler than the Sun (5,778 K)
Estimated Age
2.88 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.480 R☉
Stellar Mass
0.593 M☉
Metallicity [Fe/H]
-0.04
Extended Stellar Properties
Surface gravity (log g)
4.783 dex
Stellar density
2.721 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.754 mas
Total Proper Motion
6.124 mas/yr
PM Right Ascension
-3.90 mas/yr
PM Declination
-4.72 mas/yr
Galactic Cartesian (pc)
x = 0.255 · y = -0.626 · z = 0.737
Equatorial (J2000)
RA 292.19398° · Dec 47.45708°
Galactic ℓ, b
79.540° · 13.789°
Ecliptic λ, β
312.233° · 67.669°
HTM-20 index
-109993995
Similar Worlds
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Kepler-52 c
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Ross 508 b
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TOI-1743 b
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K2-316 c
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