Key parameters at a glance
- A radius of 2.81 Earth radii
- A mass of 8.30 Earth masses
- Surface gravity around 1.05 g
- An orbital period of 13.752 days
- Semi-major axis 0.1015 AU
- Equilibrium temperature 556 K (283 °C)
- Distance from Earth 1,861.46 light-years
- Earth Similarity Index 0.431
- Travel time at Voyager 1 speed 32,826,852 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-892 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#732of 1978
top 37.0%
This planet
2.81R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-892 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.81 | 11.21 |
| Mass (M⊕) | 1.00 | 8.30 | 317.83 |
| Density (g/cm³) | 5.51 | 2.06 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.05 | 2.53 |
| Insolation (S⊕) | 1.00 | 18.20 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 164459949
Gaia DR2
Gaia DR2 2105327723655307648
Gaia DR3
Gaia DR3 2105327723655307648
System
Kepler-892
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 13.75 Earth days (3.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1015 AU.
Transit Fingerprint
Depth
0.122 %
Duration
2.702 h
Impact parameter b
0.890
Rp / R★
0.035737
Transit midpoint (BJD)
2,454,976.0312
Photometric dip
Transit produces a flux drop of 1,216 ppm lasting ≈ 2.70 h.
Extended Orbital Architecture
Planet / star radius ratio
0.035737
Semi-major axis / stellar radius
17.400
Impact parameter (b)
0.890
Transit mid-time (BJD)
2,454,976.0312
Angular separation (arcsec)
0.17800
Eq. Temperature
556K
(283 °C)
Insolation (S⊕)
18.20
Earth = 1.00
Earth Similarity (ESI)
0.431
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-892
Spectral Class
K-type orange
Effective Temperature
4,747 K — cooler than the Sun (5,778 K)
Estimated Age
5.01 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.720 R☉
Stellar Mass
0.750 M☉
Metallicity [Fe/H]
-0.04
Extended Stellar Properties
Surface gravity (log g)
4.610 dex
Stellar density
2.797 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.724 mas
Total Proper Motion
28.277 mas/yr
PM Right Ascension
-4.14 mas/yr
PM Declination
-27.97 mas/yr
Galactic Cartesian (pc)
x = 0.164 · y = -0.702 · z = 0.693
Equatorial (J2000)
RA 283.12964° · Dec 43.88810°
Galactic ℓ, b
73.570° · 18.245°
Ecliptic λ, β
293.968° · 66.238°
HTM-20 index
683762094
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