Key parameters at a glance
- A radius of 2.47 Earth radii
- A mass of 7.00 Earth masses
- Surface gravity around 1.15 g
- An orbital period of 92.876 days
- Semi-major axis 0.3920 AU
- Equilibrium temperature 353 K (80 °C)
- Distance from Earth 1,964.33 light-years
- Earth Similarity Index 0.700
- Travel time at Voyager 1 speed 34,641,014 years
2 siblings around Kepler-310
Kepler-310 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-310 b | Rocky Terrestrial | 1.19 | 1.81 | 13.931 | 665 | 2014 |
| Kepler-310 c | Sub-Neptune | 3.38 | 11.40 | 56.475 | 417 | 2014 |
| Kepler-310 d this | Sub-Neptune | 2.47 | 7.00 | 92.876 | 353 | 2014 |
Kepler-310 d Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1226of 1978
top 61.9%
This planet
2.47R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-310 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.47 | 11.21 |
| Mass (M⊕) | 1.00 | 7.00 | 317.83 |
| Density (g/cm³) | 5.51 | 3.30 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.15 | 2.53 |
| Insolation (S⊕) | 1.00 | 3.66 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 7.000 M⊕ | Direct mass measurement (not derived). |
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 92.88 Earth days (25.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.3920 AU.
Transit Fingerprint
Depth
0.066 %
Duration
7.126 h
Impact parameter b
0.790
Rp / R★
0.025530
Transit midpoint (BJD)
2,454,978.9257
Photometric dip
Transit produces a flux drop of 659 ppm lasting ≈ 7.13 h.
Extended Orbital Architecture
Planet / star radius ratio
0.025530
Semi-major axis / stellar radius
44.300
Impact parameter (b)
0.790
Transit mid-time (BJD)
2,454,978.9257
Angular separation (arcsec)
0.65100
Eq. Temperature
353K
(80 °C)
Insolation (S⊕)
3.66
Earth = 1.00
Earth Similarity (ESI)
0.700
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure.
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-263 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.47 R⊕ · 2,461.7 ly
Kepler-1101 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.47 R⊕ · 2,421.6 ly
Kepler-269 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.47 R⊕ · 7,362.4 ly
Kepler-198 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.47 R⊕ · 1,615.6 ly
Kepler-203 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.47 R⊕ · 2,293.9 ly
Kepler-1307 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.47 R⊕ · 3,309.2 ly