Key parameters at a glance
- A radius of 4.18 Earth radii
- A mass of 16.30 Earth masses
- Surface gravity around 0.93 g
- An orbital period of 42.351 days
- Semi-major axis 0.2743 AU
- Equilibrium temperature 938 K (665 °C)
- Distance from Earth 2,277.63 light-years
- Earth Similarity Index 0.217
- Travel time at Voyager 1 speed 40,166,041 years
Kepler-1326 b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#524of 574
top 91.1%
This planet
4.18R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | Kepler-1326 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 4.18 | 11.21 |
| Mass (M⊕) | 1.00 | 16.30 | 317.83 |
| Density (g/cm³) | 5.51 | 1.23 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.93 | 2.53 |
| Insolation (S⊕) | 1.00 | 47.84 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 184417262
Gaia DR2
Gaia DR2 2073280185224841728
Gaia DR3
Gaia DR3 2073280185224841728
System
Kepler-1326
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 42.35 Earth days (11.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2743 AU.
Transit Fingerprint
Depth
0.058 %
Duration
7.636 h
Impact parameter b
0.037
Rp / R★
0.022399
Transit midpoint (BJD)
2,454,964.6238
Photometric dip
Transit produces a flux drop of 585 ppm lasting ≈ 7.64 h.
Extended Orbital Architecture
Planet / star radius ratio
0.022399
Semi-major axis / stellar radius
43.300
Impact parameter (b)
0.037
Transit mid-time (BJD)
2,454,964.6238
Angular separation (arcsec)
0.39300
Eq. Temperature
938K
(665 °C)
Insolation (S⊕)
47.84
Earth = 1.00
Earth Similarity (ESI)
0.217
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
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-1326
Spectral Class
F-type yellow-white
Effective Temperature
6,725 K — hotter than the Sun (5,778 K)
Estimated Age
1.70 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.740 R☉
Stellar Mass
1.450 M☉
Metallicity [Fe/H]
0.02
Extended Stellar Properties
Surface gravity (log g)
4.120 dex
Stellar density
0.856 g/cm³
Systemic radial velocity
4.08 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 12 bands
Astrometric Data
Parallax
1.404 mas
Total Proper Motion
7.783 mas/yr
PM Right Ascension
7.47 mas/yr
PM Declination
-2.17 mas/yr
Galactic Cartesian (pc)
x = 0.342 · y = -0.695 · z = 0.633
Equatorial (J2000)
RA 296.22220° · Dec 39.26894°
Galactic ℓ, b
73.502° · 7.434°
Ecliptic λ, β
311.586° · 58.980°
HTM-20 index
-1165873292
Similar Worlds
Kepler-619 d
Neptune-like · F-type yellow-white
Radius 4.17 R⊕ · 2,937.6 ly
Kepler-458 c
Neptune-like · F-type yellow-white
Radius 4.20 R⊕ · 5,201.3 ly
Kepler-584 b
Neptune-like · F-type yellow-white
Radius 4.21 R⊕ · 6,030.1 ly
Kepler-1715 b
Neptune-like · F-type yellow-white
Radius 4.14 R⊕ · 1,704.5 ly
Kepler-279 e
Neptune-like · F-type yellow-white
Radius 4.13 R⊕ · 3,383.5 ly
HD 28109 c
Neptune-like · F-type yellow-white
Radius 4.13 R⊕ · 455.3 ly