Key parameters at a glance
- A radius of 1.93 Earth radii
- A mass of 4.38 Earth masses
- Surface gravity around 1.18 g
- An orbital period of 18.685 days
- Semi-major axis 0.1130 AU
- Equilibrium temperature 402 K (129 °C)
- Distance from Earth 1,434.17 light-years
- Earth Similarity Index 0.657
- Travel time at Voyager 1 speed 25,291,585 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around Kepler-329
Kepler-329 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-329 b | Super-Earth | 1.40 | 2.54 | 7.416 | 547 | 2014 |
| Kepler-329 c this | Super-Earth | 1.93 | 4.38 | 18.685 | 402 | 2014 |
Kepler-329 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#85of 1176
top 7.1%
This planet
1.93R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-329 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.93 | 11.21 |
| Mass (M⊕) | 1.00 | 4.38 | 317.83 |
| Density (g/cm³) | 5.51 | 3.35 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.18 | 2.53 |
| Insolation (S⊕) | 1.00 | 11.87 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 268713285
Gaia DR2
Gaia DR2 2079224424266279936
Gaia DR3
Gaia DR3 2079224424266279936
System
Kepler-329
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 18.68 Earth days (5.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1130 AU.
Transit Fingerprint
Depth
0.125 %
Duration
3.948 h
Impact parameter b
0.640
Rp / R★
0.032436
Transit midpoint (BJD)
2,454,969.1484
Photometric dip
Transit produces a flux drop of 1,252 ppm lasting ≈ 3.95 h.
Extended Orbital Architecture
Planet / star radius ratio
0.032436
Semi-major axis / stellar radius
15.800
Impact parameter (b)
0.640
Transit mid-time (BJD)
2,454,969.1484
Angular separation (arcsec)
0.25700
Eq. Temperature
402K
(129 °C)
Insolation (S⊕)
11.87
Earth = 1.00
Earth Similarity (ESI)
0.657
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-329
Spectral Class
K-type orange
Effective Temperature
4,257 K — cooler than the Sun (5,778 K)
Estimated Age
3.47 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.523 R☉
Stellar Mass
0.602 M☉
Metallicity [Fe/H]
-0.44
Extended Stellar Properties
Surface gravity (log g)
4.740 dex
Stellar density
2.468 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.246 mas
Total Proper Motion
42.261 mas/yr
PM Right Ascension
24.75 mas/yr
PM Declination
-34.26 mas/yr
Galactic Cartesian (pc)
x = 0.344 · y = -0.614 · z = 0.710
Equatorial (J2000)
RA 299.26816° · Dec 45.22729°
Galactic ℓ, b
79.854° · 8.432°
Ecliptic λ, β
320.749° · 63.600°
HTM-20 index
-2016330453
Similar Worlds
K2-49 b
Super-Earth · K-type orange
Radius 1.93 R⊕ · 1,490.9 ly
Kepler-298 c
Super-Earth · K-type orange
Radius 1.93 R⊕ · 1,690.2 ly
Kepler-878 b
Super-Earth · K-type orange
Radius 1.93 R⊕ · 2,581.9 ly
K2-35 c
Super-Earth · K-type orange
Radius 1.93 R⊕ · 823.9 ly
K2-414 c
Super-Earth · K-type orange
Radius 1.93 R⊕ · 848.1 ly
K2-339 b
Super-Earth · K-type orange
Radius 1.92 R⊕ · 1,175.3 ly