Key parameters at a glance

A radius of 2.36 Earth radii
A mass of 6.17 Earth masses
Surface gravity around 1.11 g
An orbital period of 56.435 days
Semi-major axis 0.2913 AU
Equilibrium temperature 465 K (192 °C)
Distance from Earth 1,788.52 light-years
Earth Similarity Index 0.541
Travel time at Voyager 1 speed 31,540,585 years

Kepler-986 b Planet Profile

Physical Specs

Radius

2.36 R⊕

Radius (Jupiter)

0.211 R♃

Mass

6.17 M⊕

Mass (Jupiter)

0.019 M♃

Density

2.58 g/cm³

Surface Gravity

1.11 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.541

HZ Position Inner

Controversial No

Discovery

Year 2016

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1395of 1978

top 70.5%

This planet

2.36R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1022 b 2.36 R⊕ Kepler-482 b 2.36 R⊕ Kepler-184 b 2.36 R⊕

Metric	Earth	Kepler-986 b	Jupiter
Radius (R⊕)	1.00	2.36	11.21
Mass (M⊕)	1.00	6.17	317.83
Density (g/cm³)	5.51	2.58	1.33
Surface Gravity (g)	1.00	1.11	2.53
Insolation (S⊕)	1.00	10.86	0.037

Star Catalogue Identifiers

TIC

TIC 275494853

Gaia DR2

Gaia DR2 2077811410082955776

Gaia DR3

Gaia DR3 2077811410082955776

System

Kepler-986

Percentile among Sub-Neptune cohort

Radius 2.360 R⊕ · percentile 29 / cohort 1978

Mass 6.170 M⊕ · percentile 28 / cohort 1978

Orbital period 56.43 d · percentile 88 / cohort 1946

Distance 548.36 pc · percentile 49 / cohort 1975

ESI 0.541 · percentile 75 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

56.435 days

Semi-major axis

0.2913 AU

Eccentricity

0.000

Inclination

89.99 °

Year Length

A year here lasts approximately 56.43 Earth days (15.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2913 AU.

Transit Fingerprint

Depth

0.057 %

Duration

4.703 h

Impact parameter b

0.019

Rp / R★

0.021664

Transit midpoint (BJD)

2,454,984.4117

Photometric dip

Transit produces a flux drop of 569 ppm lasting ≈ 4.70 h.

Extended Orbital Architecture

Planet / star radius ratio

0.021664

Semi-major axis / stellar radius

92.954

Impact parameter (b)

0.019

Transit mid-time (BJD)

2,454,984.4117

Angular separation (arcsec)

0.53100

Eq. Temperature

465K

(192 °C)

Insolation (S⊕)

10.86

Earth = 1.00

Earth Similarity (ESI)

0.541

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.

Discovery Paper

Primary reference

Morton et al. 2016

Instrument

Kepler CCD Array

Publication

2016-05

Observation locale

Space

Discovery cohort

Planets confirmed in 2016 at Kepler (12 shown).

Kepler-1512 b · Rocky Terrestrial Kepler-1410 b · Super-Earth Kepler-560 b · Super-Earth Kepler-1389 b · Super-Earth Kepler-1450 b · Super-Earth Kepler-1544 b · Super-Earth Kepler-1459 b · Super-Earth Kepler-1638 b · Super-Earth Kepler-737 b · Super-Earth Kepler-1185 b · Super-Earth Kepler-1178 b · Rocky Terrestrial Kepler-1040 b · Sub-Neptune

Host System: Kepler-986

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,642 K — cooler than the Sun (5,778 K)

Estimated Age

6.17 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.980 R☉

Stellar Mass

0.960 M☉

Metallicity [Fe/H]

0.04

Extended Stellar Properties

Surface gravity (log g)

4.430 dex

Stellar density

1.200 g/cm³

Metallicity ratio

[Fe/H]

Distance

548.36 parsec

Light-years 1,788.52 ly

V-band magnitude

13.69 mag

Voyager-speed travel 31,540,585 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.795 mas

Total Proper Motion

7.620 mas/yr

PM Right Ascension

7.28 mas/yr

PM Declination

2.26 mas/yr

Galactic Cartesian (pc)

x = 0.287 · y = -0.674 · z = 0.681

Equatorial (J2000)

RA 293.09404° · Dec 42.89645°

Galactic ℓ, b

75.627° · 11.217°

Ecliptic λ, β

309.583° · 63.197°

HTM-20 index

-41613522