Key parameters at a glance
- A radius of 3.38 Earth radii
- A mass of 11.40 Earth masses
- Surface gravity around 1.00 g
- An orbital period of 56.475 days
- Semi-major axis 0.2810 AU
- Equilibrium temperature 417 K (144 °C)
- Distance from Earth 1,964.33 light-years
- Earth Similarity Index 0.514
- Travel time at Voyager 1 speed 34,641,014 years
2 siblings around Kepler-310
Kepler-310 c 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-310 b | Rocky Terrestrial | 1.19 | 1.81 | 13.931 | 665 | 2014 |
| Kepler-310 c this | Sub-Neptune | 3.38 | 11.40 | 56.475 | 417 | 2014 |
| Kepler-310 d | Sub-Neptune | 2.47 | 7.00 | 92.876 | 353 | 2014 |
Kepler-310 c Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#230of 1978
top 11.6%
This planet
3.38R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-310 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.38 | 11.21 |
| Mass (M⊕) | 1.00 | 11.40 | 317.83 |
| Density (g/cm³) | 5.51 | 1.62 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.00 | 2.53 |
| Insolation (S⊕) | 1.00 | 7.11 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 158840828
Gaia DR2
Gaia DR2 2127798442794047104
Gaia DR3
Gaia DR3 2127798442794047104
System
Kepler-310
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 56.48 Earth days (15.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2810 AU.
Transit Fingerprint
Depth
0.109 %
Duration
6.133 h
Impact parameter b
0.890
Rp / R★
0.033600
Transit midpoint (BJD)
2,454,976.8131
Photometric dip
Transit produces a flux drop of 1,092 ppm lasting ≈ 6.13 h.
Extended Orbital Architecture
Planet / star radius ratio
0.033600
Semi-major axis / stellar radius
47.000
Impact parameter (b)
0.890
Transit mid-time (BJD)
2,454,976.8131
Angular separation (arcsec)
0.46700
Eq. Temperature
417K
(144 °C)
Insolation (S⊕)
7.11
Earth = 1.00
Earth Similarity (ESI)
0.514
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
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-310
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,797 K — hotter than the Sun (5,778 K)
Estimated Age
1.90 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.876 R☉
Stellar Mass
0.854 M☉
Metallicity [Fe/H]
-0.12
Extended Stellar Properties
Surface gravity (log g)
4.521 dex
Stellar density
1.460 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.632 mas
Total Proper Motion
7.268 mas/yr
PM Right Ascension
-7.27 mas/yr
PM Declination
-0.19 mas/yr
Galactic Cartesian (pc)
x = 0.220 · y = -0.646 · z = 0.731
Equatorial (J2000)
RA 288.83928° · Dec 46.98675°
Galactic ℓ, b
78.130° · 15.674°
Ecliptic λ, β
306.149° · 68.075°
HTM-20 index
1862303311
Similar Worlds
Kepler-965 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.38 R⊕ · 1,900.9 ly
Kepler-139 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.38 R⊕ · 1,275.4 ly
Kepler-1676 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.38 R⊕ · —
Kepler-335 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.39 R⊕ · 4,171.4 ly
Kepler-766 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.39 R⊕ · 7,493.8 ly
HD 134606 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.37 R⊕ · 87.4 ly