Key parameters at a glance

A radius of 1.26 Earth radii
A mass of 2.13 Earth masses
Surface gravity around 1.34 g
An orbital period of 6.108 days
Semi-major axis 0.0711 AU
Equilibrium temperature 1,267 K (994 °C)
Distance from Earth 4,009.27 light-years
Earth Similarity Index 0.238
Travel time at Voyager 1 speed 70,703,519 years

Kepler-1618 b Planet Profile

Physical Specs

Radius

1.26 R⊕

Radius (Jupiter)

0.112 R♃

Mass

2.13 M⊕

Mass (Jupiter)

0.007 M♃

Density

5.85 g/cm³

Surface Gravity

1.34 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.238

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

#1149of 1176

top 97.6%

This planet

1.26R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-755 c 1.26 R⊕ Kepler-114 b 1.26 R⊕ Kepler-134 c 1.26 R⊕

Metric	Earth	Kepler-1618 b	Jupiter
Radius (R⊕)	1.00	1.26	11.21
Mass (M⊕)	1.00	2.13	317.83
Density (g/cm³)	5.51	5.85	1.33
Surface Gravity (g)	1.00	1.34	2.53
Insolation (S⊕)	1.00	903.91	0.037

Star Catalogue Identifiers

TIC

TIC 271546110

Gaia DR2

Gaia DR2 2080067440443554176

Gaia DR3

Gaia DR3 2080067440445173760

System

Kepler-1618

Percentile among Super-Earth cohort

Radius 1.260 R⊕ · percentile 2 / cohort 1176

Mass 2.130 M⊕ · percentile 3 / cohort 1176

Orbital period 6.11 d · percentile 48 / cohort 1164

Distance 1,229.25 pc · percentile 90 / cohort 1171

ESI 0.238 · percentile 20 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

6.108 days

Semi-major axis

0.0711 AU

Eccentricity

0.000

Inclination

86.57 °

Year Length

A year here lasts approximately 6.11 Earth days (1.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0711 AU.

Transit Fingerprint

Depth

0.006 %

Duration

3.649 h

Impact parameter b

0.450

Rp / R★

0.007075

Transit midpoint (BJD)

2,454,964.8803

Photometric dip

Transit produces a flux drop of 57 ppm lasting ≈ 3.65 h.

Extended Orbital Architecture

Planet / star radius ratio

0.007075

Semi-major axis / stellar radius

10.530

Impact parameter (b)

0.450

Transit mid-time (BJD)

2,454,964.8803

Angular separation (arcsec)

0.05780

Eq. Temperature

1,267K

(994 °C)

Insolation (S⊕)

903.91

Earth = 1.00

Earth Similarity (ESI)

0.238

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

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-1618

Spectral Class

F-type yellow-white

Effective Temperature

6,620 K — hotter than the Sun (5,778 K)

Estimated Age

1.78 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.650 R☉

Stellar Mass

1.410 M☉

Metallicity [Fe/H]

0.04

Extended Stellar Properties

Surface gravity (log g)

4.150 dex

Stellar density

0.280 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,229.25 parsec

Light-years 4,009.27 ly

V-band magnitude

13.67 mag

Voyager-speed travel 70,703,519 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.785 mas

Total Proper Motion

7.545 mas/yr

PM Right Ascension

-1.31 mas/yr

PM Declination

-7.43 mas/yr

Galactic Cartesian (pc)

x = 0.296 · y = -0.629 · z = 0.719

Equatorial (J2000)

RA 295.17536° · Dec 45.93086°

Galactic ℓ, b

79.072° · 11.279°

Ecliptic λ, β

315.401° · 65.450°

HTM-20 index

-2003035841