Key parameters at a glance
- A radius of 1.38 Earth radii
- A mass of 3.90 Earth masses
- Surface gravity around 2.04 g
- An orbital period of 1.678 days
- Semi-major axis 0.0278 AU
- Equilibrium temperature 1,838 K (1565 °C)
- Distance from Earth 1,483.63 light-years
- Earth Similarity Index 0.141
- Travel time at Voyager 1 speed 26,163,782 years
1 sibling around Kepler-323
Kepler-323 b 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-323 b this | Super-Earth | 1.38 | 3.90 | 1.678 | 1,838 | 2014 |
| Kepler-323 c | Super-Earth | 1.57 | 6.80 | 3.554 | 1,431 | 2014 |
Kepler-323 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#952of 1176
top 80.9%
This planet
1.38R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-323 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.38 | 11.21 |
| Mass (M⊕) | 1.00 | 3.90 | 317.83 |
| Density (g/cm³) | 5.51 | 8.20 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.04 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,900.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 3.900 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 137150039
Gaia DR2
Gaia DR2 2052582432887909376
Gaia DR3
Gaia DR3 2052582432887909376
System
Kepler-323
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 1.68 Earth days (0.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0278 AU.
Transit Fingerprint
Depth
0.015 %
Duration
2.512 h
Impact parameter b
0.701
Rp / R★
0.011305
Transit midpoint (BJD)
2,454,953.9478
Photometric dip
Transit produces a flux drop of 146 ppm lasting ≈ 2.51 h.
Extended Orbital Architecture
Planet / star radius ratio
0.011305
Semi-major axis / stellar radius
5.578
Impact parameter (b)
0.701
RV semi-amplitude (K)
2.100 m/s
Transit mid-time (BJD)
2,454,953.9478
Angular separation (arcsec)
0.06110
Eq. Temperature
1,838K
(1565 °C)
Insolation (S⊕)
1,900.00
Earth = 1.00
Earth Similarity (ESI)
0.141
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
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-323
Spectral Class
F-type yellow-white
Effective Temperature
6,004 K — hotter than the Sun (5,778 K)
Estimated Age
5.40 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.120 R☉
Stellar Mass
1.015 M☉
Metallicity [Fe/H]
-0.14
Extended Stellar Properties
Surface gravity (log g)
4.380 dex
Stellar density
0.740 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
2.170 mas
Total Proper Motion
12.306 mas/yr
PM Right Ascension
12.01 mas/yr
PM Declination
-2.70 mas/yr
Galactic Cartesian (pc)
x = 0.287 · y = -0.732 · z = 0.617
Equatorial (J2000)
RA 291.38230° · Dec 38.12746°
Galactic ℓ, b
70.696° · 10.240°
Ecliptic λ, β
303.918° · 59.074°
HTM-20 index
1988392611
Similar Worlds
Kepler-84 d
Super-Earth · F-type yellow-white
Radius 1.38 R⊕ · 3,339.5 ly
Kepler-402 d
Super-Earth · F-type yellow-white
Radius 1.38 R⊕ · 2,039.6 ly
Kepler-208 c
Super-Earth · F-type yellow-white
Radius 1.39 R⊕ · 2,528.8 ly
Kepler-1394 b
Super-Earth · F-type yellow-white
Radius 1.39 R⊕ · 2,088.7 ly
Kepler-320 c
Super-Earth · F-type yellow-white
Radius 1.37 R⊕ · 2,696.0 ly
Kepler-1300 b
Super-Earth · F-type yellow-white
Radius 1.37 R⊕ · 2,534.3 ly