Key parameters at a glance
- A radius of 2.17 Earth radii
- A mass of 5.35 Earth masses
- Surface gravity around 1.14 g
- An orbital period of 9.336 days
- Semi-major axis 0.0747 AU
- Equilibrium temperature 577 K (304 °C)
- Distance from Earth 1,917.92 light-years
- Earth Similarity Index 0.460
- Travel time at Voyager 1 speed 33,822,481 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1329 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1720of 1978
top 86.9%
This planet
2.17R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1329 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.17 | 11.21 |
| Mass (M⊕) | 1.00 | 5.35 | 317.83 |
| Density (g/cm³) | 5.51 | 2.88 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.14 | 2.53 |
| Insolation (S⊕) | 1.00 | 26.65 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 47977416
Gaia DR2
Gaia DR2 2119746375543622016
Gaia DR3
Gaia DR3 2119746375543622016
System
Kepler-1329
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 9.34 Earth days (2.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0747 AU.
Transit Fingerprint
Depth
0.089 %
Duration
2.264 h
Impact parameter b
0.500
Rp / R★
0.028967
Transit midpoint (BJD)
2,454,973.6808
Photometric dip
Transit produces a flux drop of 885 ppm lasting ≈ 2.26 h.
Extended Orbital Architecture
Planet / star radius ratio
0.028967
Semi-major axis / stellar radius
14.260
Impact parameter (b)
0.500
Transit mid-time (BJD)
2,454,973.6808
Angular separation (arcsec)
0.12700
Eq. Temperature
577K
(304 °C)
Insolation (S⊕)
26.65
Earth = 1.00
Earth Similarity (ESI)
0.460
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
Morton et al. 2016Instrument
Kepler CCD Array
Publication
2016-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at Kepler (12 shown).
Host System: Kepler-1329
Spectral Class
K-type orange
Effective Temperature
4,500 K — cooler than the Sun (5,778 K)
Estimated Age
5.62 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.690 R☉
Stellar Mass
0.720 M☉
Metallicity [Fe/H]
0.02
Extended Stellar Properties
Surface gravity (log g)
4.620 dex
Stellar density
4.941 g/cm³
Systemic radial velocity
-14.26 km/s
Rotational v·sin i
8.70 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.672 mas
Total Proper Motion
20.557 mas/yr
PM Right Ascension
-14.23 mas/yr
PM Declination
-14.84 mas/yr
Galactic Cartesian (pc)
x = 0.134 · y = -0.652 · z = 0.746
Equatorial (J2000)
RA 281.64764° · Dec 48.27095°
Galactic ℓ, b
77.599° · 20.660°
Ecliptic λ, β
294.037° · 70.740°
HTM-20 index
2051420239
Similar Worlds
Kepler-1009 b
Sub-Neptune · K-type orange
Radius 2.17 R⊕ · 1,157.9 ly
Kepler-304 c
Sub-Neptune · K-type orange
Radius 2.17 R⊕ · 1,417.7 ly
Kepler-102 e
Sub-Neptune · K-type orange
Radius 2.17 R⊕ · 351.6 ly
HD 20781 c
Sub-Neptune · K-type orange
Radius 2.17 R⊕ · 117.3 ly
Kepler-1653 b
Sub-Neptune · K-type orange
Radius 2.17 R⊕ · 2,462.5 ly
TOI-904 c
Sub-Neptune · K-type orange
Radius 2.17 R⊕ · 150.3 ly