Key parameters at a glance
- A radius of 1.28 Earth radii
- A mass of 2.18 Earth masses
- Surface gravity around 1.33 g
- An orbital period of 4.897 days
- Semi-major axis 0.0523 AU
- Equilibrium temperature 904 K (631 °C)
- Distance from Earth 2,374.10 light-years
- Earth Similarity Index 0.345
- Travel time at Voyager 1 speed 41,867,296 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-776 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#1117of 1176
top 94.9%
This planet
1.28R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-776 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.28 | 11.21 |
| Mass (M⊕) | 1.00 | 2.18 | 317.83 |
| Density (g/cm³) | 5.51 | 5.71 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.33 | 2.53 |
| Insolation (S⊕) | 1.00 | 135.08 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 121114760
Gaia DR2
Gaia DR2 2102410719308323584
Gaia DR3
Gaia DR3 2102410719308323584
System
Kepler-776
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.90 Earth days (1.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0523 AU.
Transit Fingerprint
Depth
0.027 %
Duration
1.799 h
Impact parameter b
0.121
Rp / R★
0.014902
Transit midpoint (BJD)
2,454,966.4022
Photometric dip
Transit produces a flux drop of 274 ppm lasting ≈ 1.80 h.
Extended Orbital Architecture
Planet / star radius ratio
0.014902
Semi-major axis / stellar radius
20.970
Impact parameter (b)
0.121
Transit mid-time (BJD)
2,454,966.4022
Angular separation (arcsec)
0.07190
Eq. Temperature
904K
(631 °C)
Insolation (S⊕)
135.08
Earth = 1.00
Earth Similarity (ESI)
0.345
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-776
Spectral Class
K-type orange
Effective Temperature
5,071 K — cooler than the Sun (5,778 K)
Estimated Age
4.37 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.780 R☉
Stellar Mass
0.830 M☉
Metallicity [Fe/H]
0.05
Extended Stellar Properties
Surface gravity (log g)
4.580 dex
Stellar density
7.273 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.345 mas
Total Proper Motion
8.263 mas/yr
PM Right Ascension
-3.59 mas/yr
PM Declination
7.44 mas/yr
Galactic Cartesian (pc)
x = 0.222 · y = -0.714 · z = 0.664
Equatorial (J2000)
RA 287.27261° · Dec 41.63560°
Galactic ℓ, b
72.581° · 14.582°
Ecliptic λ, β
299.604° · 63.310°
HTM-20 index
-1149847741
Similar Worlds
Kepler-1037 b
Super-Earth · K-type orange
Radius 1.28 R⊕ · 1,457.6 ly
Kepler-787 b
Super-Earth · K-type orange
Radius 1.28 R⊕ · 1,642.4 ly
TOI-431 b
Super-Earth · K-type orange
Radius 1.28 R⊕ · 106.2 ly
Kepler-1420 b
Super-Earth · K-type orange
Radius 1.28 R⊕ · 3,438.9 ly
Kepler-1008 b
Super-Earth · K-type orange
Radius 1.28 R⊕ · 921.6 ly
K2-165 b
Super-Earth · K-type orange
Radius 1.27 R⊕ · 439.0 ly