Key parameters at a glance
- A radius of 3.15 Earth radii
- A mass of 6.20 Earth masses
- Surface gravity around 0.62 g
- An orbital period of 51.806 days
- Semi-major axis 0.2600 AU
- Equilibrium temperature 410 K (137 °C)
- Distance from Earth 1,635.91 light-years
- Earth Similarity Index 0.548
- Travel time at Voyager 1 speed 28,849,336 years
3 siblings around Kepler-324
Kepler-324 c shares its host star with 3 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-324 b | Rocky Terrestrial | 1.14 | 2,414.40 | 4.385 | 935 | 2014 |
| Kepler-324 e | Sub-Neptune | 2.04 | 235.01 | 13.979 | 635 | 2021 |
| KOI-1831 d | Rocky Terrestrial | 1.13 | 2.23 | 34.169 | 475 | 2021 |
| Kepler-324 c this | Sub-Neptune | 3.15 | 6.20 | 51.806 | 410 | 2014 |
Kepler-324 c Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#391of 1978
top 19.7%
This planet
3.15R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-324 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.15 | 11.21 |
| Mass (M⊕) | 1.00 | 6.20 | 317.83 |
| Density (g/cm³) | 5.51 | 1.73 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.62 | 2.53 |
| Insolation (S⊕) | 1.00 | 7.23 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 6.200 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 243271716
Gaia DR2
Gaia DR2 2132078120004385152
Gaia DR3
Gaia DR3 2132078120004385152
System
Kepler-324
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 51.81 Earth days (14.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2600 AU.
Transit Fingerprint
Depth
0.100 %
Duration
6.589 h
Impact parameter b
0.830
Rp / R★
0.030300
Transit midpoint (BJD)
2,455,016.0005
Photometric dip
Transit produces a flux drop of 1,004 ppm lasting ≈ 6.59 h.
Extended Orbital Architecture
Planet / star radius ratio
0.030300
Semi-major axis / stellar radius
23.100
Impact parameter (b)
0.830
Transit mid-time (BJD)
2,455,016.0005
Angular separation (arcsec)
0.51800
Eq. Temperature
410K
(137 °C)
Insolation (S⊕)
7.23
Earth = 1.00
Earth Similarity (ESI)
0.548
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Transit timing variations
Gravitational interactions from neighbours have been detected.
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-324
Spectral Class
K-type orange
Effective Temperature
5,194 K — cooler than the Sun (5,778 K)
Estimated Age
3.39 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.840 R☉
Stellar Mass
0.901 M☉
Metallicity [Fe/H]
0.18
Extended Stellar Properties
Surface gravity (log g)
4.530 dex
Stellar density
1.852 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.965 mas
Total Proper Motion
22.463 mas/yr
PM Right Ascension
-2.20 mas/yr
PM Declination
22.36 mas/yr
Galactic Cartesian (pc)
x = 0.184 · y = -0.621 · z = 0.762
Equatorial (J2000)
RA 286.47145° · Dec 49.64909°
Galactic ℓ, b
80.093° · 18.132°
Ecliptic λ, β
304.556° · 71.118°
HTM-20 index
349022935
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Kepler-1536 b
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HD 13808 c
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HD 69830 b
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