Key parameters at a glance
- A radius of 1.79 Earth radii
- A mass of 3.86 Earth masses
- Surface gravity around 1.20 g
- An orbital period of 11.391 days
- Semi-major axis 0.0920 AU
- Equilibrium temperature 618 K (345 °C)
- Distance from Earth 2,558.89 light-years
- Earth Similarity Index 0.461
- Travel time at Voyager 1 speed 45,126,014 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-768 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#271of 1176
top 23.0%
This planet
1.79R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-768 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.79 | 11.21 |
| Mass (M⊕) | 1.00 | 3.86 | 317.83 |
| Density (g/cm³) | 5.51 | 3.70 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.20 | 2.53 |
| Insolation (S⊕) | 1.00 | 40.59 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 138568968
Gaia DR2
Gaia DR2 2052074389802779904
Gaia DR3
Gaia DR3 2052074389802779904
System
Kepler-768
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 11.39 Earth days (3.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0920 AU.
Transit Fingerprint
Depth
0.045 %
Duration
2.297 h
Impact parameter b
0.092
Rp / R★
0.020947
Transit midpoint (BJD)
2,454,970.7100
Photometric dip
Transit produces a flux drop of 449 ppm lasting ≈ 2.30 h.
Extended Orbital Architecture
Planet / star radius ratio
0.020947
Semi-major axis / stellar radius
10.800
Impact parameter (b)
0.092
Transit mid-time (BJD)
2,454,970.7100
Angular separation (arcsec)
0.11700
Eq. Temperature
618K
(345 °C)
Insolation (S⊕)
40.59
Earth = 1.00
Earth Similarity (ESI)
0.461
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-768
Spectral Class
K-type orange
Effective Temperature
5,108 K — cooler than the Sun (5,778 K)
Estimated Age
4.57 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.780 R☉
Stellar Mass
0.820 M☉
Metallicity [Fe/H]
-0.03
Extended Stellar Properties
Surface gravity (log g)
4.580 dex
Stellar density
8.339 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.247 mas
Total Proper Motion
4.602 mas/yr
PM Right Ascension
3.50 mas/yr
PM Declination
-2.99 mas/yr
Galactic Cartesian (pc)
x = 0.320 · y = -0.715 · z = 0.621
Equatorial (J2000)
RA 294.11569° · Dec 38.39344°
Galactic ℓ, b
71.933° · 8.455°
Ecliptic λ, β
308.036° · 58.689°
HTM-20 index
1135901515
Similar Worlds
TOI-1075 b
Super-Earth · K-type orange
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Kepler-305 e
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Kepler-1794 b
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Kepler-1964 b
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