Key parameters at a glance

A radius of 1.74 Earth radii
A mass of 3.68 Earth masses
Surface gravity around 1.22 g
An orbital period of 4.854 days
Semi-major axis 0.0569 AU
Equilibrium temperature 1,052 K (779 °C)
Distance from Earth 3,343.20 light-years
Earth Similarity Index 0.270
Travel time at Voyager 1 speed 58,957,273 years

Kepler-918 b Planet Profile

Physical Specs

Radius

1.74 R⊕

Radius (Jupiter)

0.155 R♃

Mass

3.68 M⊕

Mass (Jupiter)

0.012 M♃

Density

3.84 g/cm³

Surface Gravity

1.22 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.270

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

#344of 1176

top 29.2%

This planet

1.74R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-260 c 1.74 R⊕ TOI-1266 d 1.74 R⊕ Kepler-33 b 1.74 R⊕

Metric	Earth	Kepler-918 b	Jupiter
Radius (R⊕)	1.00	1.74	11.21
Mass (M⊕)	1.00	3.68	317.83
Density (g/cm³)	5.51	3.84	1.33
Surface Gravity (g)	1.00	1.22	2.53
Insolation (S⊕)	1.00	258.70	0.037

Star Catalogue Identifiers

TIC

TIC 28450124

Gaia DR2

Gaia DR2 2086541158751075968

Gaia DR3

Gaia DR3 2086541158751075968

System

Kepler-918

Percentile among Super-Earth cohort

Radius 1.740 R⊕ · percentile 70 / cohort 1176

Mass 3.680 M⊕ · percentile 64 / cohort 1176

Orbital period 4.85 d · percentile 39 / cohort 1164

Distance 1,025.03 pc · percentile 81 / cohort 1171

ESI 0.270 · percentile 29 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

4.854 days

Semi-major axis

0.0569 AU

Eccentricity

0.000

Inclination

77.94 °

Year Length

A year here lasts approximately 4.85 Earth days (1.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0569 AU.

Transit Fingerprint

Depth

0.020 %

Duration

2.799 h

Impact parameter b

0.226

Rp / R★

0.013575

Transit midpoint (BJD)

2,454,968.0944

Photometric dip

Transit produces a flux drop of 196 ppm lasting ≈ 2.80 h.

Extended Orbital Architecture

Planet / star radius ratio

0.013575

Semi-major axis / stellar radius

13.110

Impact parameter (b)

0.226

Transit mid-time (BJD)

2,454,968.0944

Angular separation (arcsec)

0.05550

Eq. Temperature

1,052K

(779 °C)

Insolation (S⊕)

258.70

Earth = 1.00

Earth Similarity (ESI)

0.270

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-918

Spectral Class

F-type yellow-white

Effective Temperature

6,028 K — hotter than the Sun (5,778 K)

Estimated Age

3.24 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.140 R☉

Stellar Mass

1.110 M☉

Metallicity [Fe/H]

0.06

Extended Stellar Properties

Surface gravity (log g)

4.370 dex

Stellar density

1.808 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,025.03 parsec

Light-years 3,343.20 ly

V-band magnitude

15.06 mag

Voyager-speed travel 58,957,273 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.948 mas

Total Proper Motion

5.554 mas/yr

PM Right Ascension

1.04 mas/yr

PM Declination

-5.46 mas/yr

Galactic Cartesian (pc)

x = 0.315 · y = -0.587 · z = 0.746

Equatorial (J2000)

RA 298.20073° · Dec 48.26779°

Galactic ℓ, b

82.162° · 10.577°

Ecliptic λ, β

322.495° · 66.640°

HTM-20 index

2026476117