Key parameters at a glance

A radius of 3.23 Earth radii
A mass of 10.50 Earth masses
Surface gravity around 1.01 g
An orbital period of 425.478 days
Semi-major axis 1.1219 AU
Equilibrium temperature 248 K (-25 °C)
Distance from Earth 6,352.02 light-years
Earth Similarity Index 0.623
Travel time at Voyager 1 speed 112,017,841 years

Kepler-1636 b Planet Profile

Physical Specs

Radius

3.23 R⊕

Radius (Jupiter)

0.288 R♃

Mass

10.50 M⊕

Mass (Jupiter)

0.033 M♃

Density

1.71 g/cm³

Surface Gravity

1.01 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.623

HZ Position Habitable

Controversial No

Discovery

Year 2016

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#325of 1978

top 16.4%

This planet

3.23R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

HD 12235 b 3.23 R⊕ HD 160691 d 3.23 R⊕ GJ 3138 d 3.23 R⊕

Metric	Earth	Kepler-1636 b	Jupiter
Radius (R⊕)	1.00	3.23	11.21
Mass (M⊕)	1.00	10.50	317.83
Density (g/cm³)	5.51	1.71	1.33
Surface Gravity (g)	1.00	1.01	2.53
Insolation (S⊕)	1.00	1.22	0.037

Star Catalogue Identifiers

TIC

TIC 270854684

Gaia DR2

Gaia DR2 2128125650583752832

Gaia DR3

Gaia DR3 2128125650583752832

System

Kepler-1636

Percentile among Sub-Neptune cohort

Radius 3.230 R⊕ · percentile 83 / cohort 1978

Mass 10.500 M⊕ · percentile 76 / cohort 1978

Orbital period 425.48 d · percentile 99 / cohort 1946

Distance 1,947.54 pc · percentile 97 / cohort 1975

ESI 0.623 · percentile 85 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

425.478 days

Semi-major axis

1.1219 AU

Eccentricity

0.000

Inclination

89.99 °

Year Length

A year here lasts about 1.16 Earth years on a nearly circular orbit at a mean orbital distance of 1.1219 AU.

Transit Fingerprint

Depth

0.100 %

Duration

17.848 h

Impact parameter b

0.186

Rp / R★

0.028827

Transit midpoint (BJD)

2,454,982.0646

Photometric dip

Transit produces a flux drop of 998 ppm lasting ≈ 17.85 h.

Extended Orbital Architecture

Planet / star radius ratio

0.028827

Semi-major axis / stellar radius

187.200

Impact parameter (b)

0.186

Transit mid-time (BJD)

2,454,982.0646

Angular separation (arcsec)

0.57600

Eq. Temperature

248K

(-25 °C)

Insolation (S⊕)

1.22

Earth = 1.00

Earth Similarity (ESI)

0.623

0 = alien, 1 = Earth-identical

Within the conservative habitable zone — surface water would be frozen.

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-1636

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,797 K — hotter than the Sun (5,778 K)

Estimated Age

3.98 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.020 R☉

Stellar Mass

1.010 M☉

Metallicity [Fe/H]

0.03

Extended Stellar Properties

Surface gravity (log g)

4.430 dex

Stellar density

0.590 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,947.54 parsec

Light-years 6,352.02 ly

V-band magnitude

15.81 mag

Voyager-speed travel 112,017,841 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.485 mas

Total Proper Motion

4.741 mas/yr

PM Right Ascension

-4.00 mas/yr

PM Declination

-2.55 mas/yr

Galactic Cartesian (pc)

x = 0.281 · y = -0.629 · z = 0.725

Equatorial (J2000)

RA 294.05757° · Dec 46.44098°

Galactic ℓ, b

79.175° · 12.200°

Ecliptic λ, β

314.177° · 66.229°

HTM-20 index

-1324551556