Key parameters at a glance
- A radius of 1.69 Earth radii
- A mass of 3.50 Earth masses
- Surface gravity around 1.23 g
- An orbital period of 5.709 days
- Semi-major axis 0.0520 AU
- Equilibrium temperature 644 K (371 °C)
- Distance from Earth 946.91 light-years
- Earth Similarity Index 0.451
- Travel time at Voyager 1 speed 16,698,742 years
- Almost certainly tidally locked to its host star given the close orbit
2 siblings around Kepler-968
Kepler-968 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-968 b | Sub-Neptune | 2.00 | 4.66 | 3.693 | 745 | 2016 |
| Kepler-968 c this | Super-Earth | 1.69 | 3.50 | 5.709 | 644 | 2016 |
| KOI-1833 d | Sub-Neptune | 2.58 | 11.02 | 7.685 | 613 | 2021 |
Kepler-968 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#415of 1176
top 35.2%
This planet
1.69R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-968 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.69 | 11.21 |
| Mass (M⊕) | 1.00 | 3.50 | 317.83 |
| Density (g/cm³) | 5.51 | 3.98 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.23 | 2.53 |
| Insolation (S⊕) | 1.00 | 58.15 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 350814607
Gaia DR2
Gaia DR2 2132152474478407040
Gaia DR3
Gaia DR3 2132152474478407040
System
Kepler-968
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.71 Earth days (1.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0520 AU.
Transit Fingerprint
Depth
0.061 %
Duration
1.577 h
Impact parameter b
0.211
Rp / R★
0.022474
Transit midpoint (BJD)
2,454,970.1221
Photometric dip
Transit produces a flux drop of 612 ppm lasting ≈ 1.58 h.
Extended Orbital Architecture
Planet / star radius ratio
0.022474
Semi-major axis / stellar radius
27.680
Impact parameter (b)
0.211
Transit mid-time (BJD)
2,454,970.1221
Angular separation (arcsec)
0.17900
Eq. Temperature
644K
(371 °C)
Insolation (S⊕)
58.15
Earth = 1.00
Earth Similarity (ESI)
0.451
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
Morton et al. 2016Instrument
Kepler CCD Array
Publication
2016-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at Kepler (12 shown).
Host System: Kepler-968
Spectral Class
K-type orange
Effective Temperature
4,598 K — cooler than the Sun (5,778 K)
Estimated Age
2.14 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.700 R☉
Stellar Mass
0.760 M☉
Metallicity [Fe/H]
0.13
Extended Stellar Properties
Surface gravity (log g)
4.630 dex
Stellar density
6.117 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
3.416 mas
Total Proper Motion
5.156 mas/yr
PM Right Ascension
-4.75 mas/yr
PM Declination
2.01 mas/yr
Galactic Cartesian (pc)
x = 0.172 · y = -0.618 · z = 0.767
Equatorial (J2000)
RA 285.60259° · Dec 50.11204°
Galactic ℓ, b
80.344° · 18.818°
Ecliptic λ, β
303.407° · 71.745°
HTM-20 index
286825291
Similar Worlds
Kepler-1148 b
Super-Earth · K-type orange
Radius 1.69 R⊕ · 2,040.7 ly
K2-131 b
Super-Earth · K-type orange
Radius 1.69 R⊕ · 497.4 ly
Kepler-674 b
Super-Earth · K-type orange
Radius 1.69 R⊕ · 1,116.3 ly
K2-381 d
Super-Earth · K-type orange
Radius 1.69 R⊕ · 475.2 ly
K2-394 b
Super-Earth · K-type orange
Radius 1.69 R⊕ · 319.7 ly
K2-377 b
Super-Earth · K-type orange
Radius 1.69 R⊕ · 636.5 ly