Key parameters at a glance
- A radius of 2.79 Earth radii
- A mass of 8.20 Earth masses
- Surface gravity around 1.05 g
- An orbital period of 38.715 days
- Semi-major axis 0.2200 AU
- Equilibrium temperature 498 K (225 °C)
- Distance from Earth 2,685.05 light-years
- Earth Similarity Index 0.477
- Travel time at Voyager 1 speed 47,350,910 years
2 siblings around Kepler-325
Kepler-325 d 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-325 b | Sub-Neptune | 2.91 | 8.80 | 4.544 | 1,017 | 2014 |
| Kepler-325 c | Sub-Neptune | 2.54 | 6.99 | 12.762 | 721 | 2014 |
| Kepler-325 d this | Sub-Neptune | 2.79 | 8.20 | 38.715 | 498 | 2014 |
Kepler-325 d Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#754of 1978
top 38.1%
This planet
2.79R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-325 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.79 | 11.21 |
| Mass (M⊕) | 1.00 | 8.20 | 317.83 |
| Density (g/cm³) | 5.51 | 2.07 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.05 | 2.53 |
| Insolation (S⊕) | 1.00 | 12.08 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 267671250
Gaia DR2
Gaia DR2 2133021810218800384
Gaia DR3
Gaia DR3 2133021810218800384
System
Kepler-325
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 38.72 Earth days (10.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2200 AU.
Transit Fingerprint
Depth
0.088 %
Duration
3.458 h
Impact parameter b
0.170
Rp / R★
0.028052
Transit midpoint (BJD)
2,454,967.0309
Photometric dip
Transit produces a flux drop of 880 ppm lasting ≈ 3.46 h.
Extended Orbital Architecture
Planet / star radius ratio
0.028052
Semi-major axis / stellar radius
81.000
Impact parameter (b)
0.170
Transit mid-time (BJD)
2,454,967.0309
Angular separation (arcsec)
0.26700
Eq. Temperature
498K
(225 °C)
Insolation (S⊕)
12.08
Earth = 1.00
Earth Similarity (ESI)
0.477
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
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-325
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,752 K — cooler than the Sun (5,778 K)
Estimated Age
0.93 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.003 R☉
Stellar Mass
0.914 M☉
Metallicity [Fe/H]
0.02
Extended Stellar Properties
Surface gravity (log g)
4.411 dex
Stellar density
1.600 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.186 mas
Total Proper Motion
3.020 mas/yr
PM Right Ascension
-2.70 mas/yr
PM Declination
1.36 mas/yr
Galactic Cartesian (pc)
x = 0.219 · y = -0.607 · z = 0.764
Equatorial (J2000)
RA 289.83542° · Dec 49.82561°
Galactic ℓ, b
81.115° · 16.181°
Ecliptic λ, β
310.882° · 70.462°
HTM-20 index
945639888
Similar Worlds
Kepler-150 d
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.79 R⊕ · 2,906.4 ly
Kepler-835 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.79 R⊕ · 7,848.4 ly
K2-319 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.79 R⊕ · 681.9 ly
Kepler-573 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.79 R⊕ · 2,516.2 ly
Kepler-586 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.79 R⊕ · 2,262.8 ly
Kepler-192 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.79 R⊕ · 2,125.5 ly