Key parameters at a glance
- A radius of 1.03 Earth radii
- A mass of 20.30 Earth masses
- Surface gravity around 19.13 g
- An orbital period of 5.212 days
- Semi-major axis 0.0470 AU
- Equilibrium temperature 537 K (264 °C)
- Distance from Earth 789.26 light-years
- Earth Similarity Index 0.276
- Travel time at Voyager 1 speed 13,918,513 years
- Almost certainly tidally locked to its host star given the close orbit
2 siblings around Kepler-327
Kepler-327 c shares its host star with 2 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-327 b | Rocky Terrestrial | 1.11 | 1.41 | 2.550 | 682 | 2014 |
| Kepler-327 c this | Rocky Terrestrial | 1.03 | 20.30 | 5.212 | 537 | 2014 |
| Kepler-327 d | Super-Earth | 1.73 | 3.64 | 13.969 | 387 | 2014 |
Kepler-327 c Planet Profile
Physical Specs
Classification
Planet Type
Rocky Terrestrial
Discovery
Size rank in cohort
Rank by radius
#297of 570
top 51.9%
This planet
1.03R⊕
Rocky Terrestrial median
1.01R⊕
Nearest-size peers
| Metric | Earth | Kepler-327 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.03 | 11.21 |
| Mass (M⊕) | 1.00 | 20.30 | 317.83 |
| Density (g/cm³) | 5.51 | 102.00 | 1.33 |
| Surface Gravity (g) | 1.00 | 19.13 | 2.53 |
| Insolation (S⊕) | 1.00 | 28.27 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 20.300 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 63366281
Gaia DR2
Gaia DR2 2126336710805475712
Gaia DR3
Gaia DR3 2126336710805475712
System
Kepler-327
Percentile among Rocky Terrestrial cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.21 Earth days (1.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0470 AU.
Transit Fingerprint
Depth
0.043 %
Duration
2.129 h
Impact parameter b
0.220
Rp / R★
0.018794
Transit midpoint (BJD)
2,454,965.7066
Photometric dip
Transit produces a flux drop of 430 ppm lasting ≈ 2.13 h.
Extended Orbital Architecture
Planet / star radius ratio
0.018794
Semi-major axis / stellar radius
19.020
Impact parameter (b)
0.220
Transit mid-time (BJD)
2,454,965.7066
Angular separation (arcsec)
0.19400
Eq. Temperature
537K
(264 °C)
Insolation (S⊕)
28.27
Earth = 1.00
Earth Similarity (ESI)
0.276
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-327
Spectral Class
K-type orange
Effective Temperature
3,799 K — cooler than the Sun (5,778 K)
Estimated Age
3.28 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.492 R☉
Stellar Mass
0.592 M☉
Metallicity [Fe/H]
-0.20
Extended Stellar Properties
Surface gravity (log g)
4.758 dex
Stellar density
3.774 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
4.104 mas
Total Proper Motion
13.406 mas/yr
PM Right Ascension
-11.31 mas/yr
PM Declination
-7.19 mas/yr
Galactic Cartesian (pc)
x = 0.277 · y = -0.663 · z = 0.696
Equatorial (J2000)
RA 292.64230° · Dec 44.08763°
Galactic ℓ, b
76.566° · 12.042°
Ecliptic λ, β
309.833° · 64.427°
HTM-20 index
-582567180
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