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 0.928 days
- Semi-major axis 0.0159 AU
- Equilibrium temperature 1,115 K (842 °C)
- Distance from Earth 1,642.42 light-years
- Earth Similarity Index 0.275
- Travel time at Voyager 1 speed 28,964,027 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-787 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-787 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 | 493.55 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 137318289
Gaia DR2
Gaia DR2 2052736123999181824
Gaia DR3
Gaia DR3 2052736123999181824
System
Kepler-787
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts roughly 22.3 hours long on a nearly circular orbit at a mean orbital distance of 0.0159 AU.
Transit Fingerprint
Depth
0.038 %
Duration
1.300 h
Impact parameter b
0.181
Rp / R★
0.018638
Transit midpoint (BJD)
2,454,966.8034
Photometric dip
Transit produces a flux drop of 376 ppm lasting ≈ 1.30 h.
Extended Orbital Architecture
Planet / star radius ratio
0.018638
Semi-major axis / stellar radius
6.000
Impact parameter (b)
0.181
Transit mid-time (BJD)
2,454,966.8034
Angular separation (arcsec)
0.03160
Eq. Temperature
1,115K
(842 °C)
Insolation (S⊕)
493.55
Earth = 1.00
Earth Similarity (ESI)
0.275
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched. 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-787
Spectral Class
K-type orange
Effective Temperature
4,248 K — cooler than the Sun (5,778 K)
Estimated Age
3.39 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.620 R☉
Stellar Mass
0.650 M☉
Metallicity [Fe/H]
-0.09
Extended Stellar Properties
Surface gravity (log g)
4.670 dex
Stellar density
3.241 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.958 mas
Total Proper Motion
5.820 mas/yr
PM Right Ascension
2.12 mas/yr
PM Declination
5.42 mas/yr
Galactic Cartesian (pc)
x = 0.289 · y = -0.726 · z = 0.624
Equatorial (J2000)
RA 291.69248° · Dec 38.57291°
Galactic ℓ, b
71.211° · 10.222°
Ecliptic λ, β
304.623° · 59.432°
HTM-20 index
2088422564
Similar Worlds
Kepler-1037 b
Super-Earth · K-type orange
Radius 1.28 R⊕ · 1,457.6 ly
Kepler-776 b
Super-Earth · K-type orange
Radius 1.28 R⊕ · 2,374.1 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