Key parameters at a glance
- A radius of 1.19 Earth radii
- A mass of 1.81 Earth masses
- Surface gravity around 1.28 g
- An orbital period of 8.719 days
- Semi-major axis 0.0890 AU
- Equilibrium temperature 987 K (714 °C)
- Distance from Earth 2,766.63 light-years
- Earth Similarity Index 0.317
- Travel time at Voyager 1 speed 48,789,541 years
7 siblings around KOI-351
KOI-351 c shares its host star with 7 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| KOI-351 b | Super-Earth | 1.31 | 2.27 | 7.008 | 1,062 | 2013 |
| KOI-351 c this | Rocky Terrestrial | 1.19 | 1.81 | 8.719 | 987 | 2013 |
| Kepler-90 i | Super-Earth | 1.32 | 2.30 | 14.449 | 709 | 2017 |
| KOI-351 d | Sub-Neptune | 2.87 | 8.60 | 59.737 | 520 | 2013 |
| KOI-351 e | Sub-Neptune | 2.66 | 7.56 | 91.939 | 450 | 2013 |
| KOI-351 f | Sub-Neptune | 2.88 | 8.65 | 124.914 | 407 | 2013 |
| KOI-351 g | Neptune-like | 7.72 | 15.00 | 210.735 | 342 | 2013 |
| KOI-351 h | Gas Giant | 11.25 | 203.00 | 331.603 | 294 | 2013 |
KOI-351 c Planet Profile
Physical Specs
Classification
Planet Type
Rocky Terrestrial
Discovery
Size rank in cohort
Rank by radius
#101of 570
top 17.5%
This planet
1.19R⊕
Rocky Terrestrial median
1.01R⊕
Nearest-size peers
| Metric | Earth | KOI-351 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.19 | 11.21 |
| Mass (M⊕) | 1.00 | 1.81 | 317.83 |
| Density (g/cm³) | 5.51 | 5.90 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.28 | 2.53 |
| Insolation (S⊕) | 1.00 | 236.32 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 267667295
Gaia DR2
Gaia DR2 2132193431285570304
Gaia DR3
Gaia DR3 2132193431285570304
System
KOI-351
Percentile among Rocky Terrestrial cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 8.72 Earth days (2.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0890 AU.
Transit Fingerprint
Depth
0.016 %
Duration
4.410 h
Impact parameter b
0.090
Rp / R★
0.009100
Transit midpoint (BJD)
2,454,972.5687
Photometric dip
Transit produces a flux drop of 160 ppm lasting ≈ 4.41 h.
Extended Orbital Architecture
Planet / star radius ratio
0.009100
Semi-major axis / stellar radius
16.000
Impact parameter (b)
0.090
Transit mid-time (BJD)
2,454,972.5687
Angular separation (arcsec)
0.10500
Eq. Temperature
987K
(714 °C)
Insolation (S⊕)
236.32
Earth = 1.00
Earth Similarity (ESI)
0.317
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
Cabrera et al. 2014Instrument
Kepler CCD Array
Publication
2014-01
Observation locale
Space
Discovery cohort
Planets confirmed in 2013 at Kepler (12 shown).
Host System: KOI-351
Spectral Class
F-type yellow-white
Effective Temperature
6,080 K — hotter than the Sun (5,778 K)
Estimated Age
0.53 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.200 R☉
Stellar Mass
1.200 M☉
Metallicity [Fe/H]
-0.12
Extended Stellar Properties
Surface gravity (log g)
4.400 dex
Stellar density
1.189 g/cm³
Rotational v·sin i
4.60 km/s
Metallicity ratio
[M/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.150 mas
Total Proper Motion
5.432 mas/yr
PM Right Ascension
-4.38 mas/yr
PM Declination
-3.21 mas/yr
Galactic Cartesian (pc)
x = 0.163 · y = -0.631 · z = 0.758
Equatorial (J2000)
RA 284.43346° · Dec 49.30512°
Galactic ℓ, b
79.269° · 19.256°
Ecliptic λ, β
300.329° · 71.228°
HTM-20 index
-419849693
Similar Worlds
Kepler-1213 b
Rocky Terrestrial · F-type yellow-white
Radius 1.19 R⊕ · 2,634.7 ly
Kepler-1276 b
Rocky Terrestrial · F-type yellow-white
Radius 1.19 R⊕ · 1,756.3 ly
Kepler-1473 b
Rocky Terrestrial · F-type yellow-white
Radius 1.19 R⊕ · 2,127.4 ly
KOI-3503 b
Rocky Terrestrial · F-type yellow-white
Radius 1.19 R⊕ · 2,893.2 ly
Kepler-380 b
Rocky Terrestrial · F-type yellow-white
Radius 1.19 R⊕ · 2,654.0 ly
Kepler-1617 b
Rocky Terrestrial · F-type yellow-white
Radius 1.20 R⊕ · 2,929.9 ly