Key parameters at a glance
- A radius of 1.43 Earth radii
- A mass of 2.63 Earth masses
- Surface gravity around 1.29 g
- An orbital period of 5.144 days
- Semi-major axis 0.0549 AU
- Equilibrium temperature 923 K (650 °C)
- Distance from Earth 2,677.46 light-years
- Earth Similarity Index 0.330
- Travel time at Voyager 1 speed 47,216,952 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-876 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#864of 1176
top 73.4%
This planet
1.43R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-876 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.43 | 11.21 |
| Mass (M⊕) | 1.00 | 2.63 | 317.83 |
| Density (g/cm³) | 5.51 | 4.94 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.29 | 2.53 |
| Insolation (S⊕) | 1.00 | 152.75 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 164529393
Gaia DR2
Gaia DR2 2105095348745153536
Gaia DR3
Gaia DR3 2105095348745153536
System
Kepler-876
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.14 Earth days (1.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0549 AU.
Transit Fingerprint
Depth
0.031 %
Duration
2.720 h
Impact parameter b
0.117
Rp / R★
0.016584
Transit midpoint (BJD)
2,454,966.8274
Photometric dip
Transit produces a flux drop of 311 ppm lasting ≈ 2.72 h.
Extended Orbital Architecture
Planet / star radius ratio
0.016584
Semi-major axis / stellar radius
14.600
Impact parameter (b)
0.117
Transit mid-time (BJD)
2,454,966.8274
Angular separation (arcsec)
0.06690
Eq. Temperature
923K
(650 °C)
Insolation (S⊕)
152.75
Earth = 1.00
Earth Similarity (ESI)
0.330
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-876
Spectral Class
K-type orange
Effective Temperature
5,060 K — cooler than the Sun (5,778 K)
Estimated Age
5.25 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.770 R☉
Stellar Mass
0.810 M☉
Metallicity [Fe/H]
-0.03
Extended Stellar Properties
Surface gravity (log g)
4.580 dex
Stellar density
2.226 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.190 mas
Total Proper Motion
8.570 mas/yr
PM Right Ascension
-1.55 mas/yr
PM Declination
-8.43 mas/yr
Galactic Cartesian (pc)
x = 0.169 · y = -0.707 · z = 0.687
Equatorial (J2000)
RA 283.47817° · Dec 43.38372°
Galactic ℓ, b
73.167° · 17.832°
Ecliptic λ, β
294.293° · 65.690°
HTM-20 index
746543642
Similar Worlds
K2-36 b
Super-Earth · K-type orange
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Kepler-1259 b
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Kepler-1366 b
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Kepler-1825 b
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Kepler-763 c
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GJ 9827 b
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