Key parameters at a glance

A radius of 3.05 Earth radii
A mass of 9.53 Earth masses
Surface gravity around 1.02 g
An orbital period of 5.112 days
Semi-major axis 0.0593 AU
Equilibrium temperature 1,351 K (1078 °C)
Distance from Earth 2,946.85 light-years
Earth Similarity Index 0.165
Travel time at Voyager 1 speed 51,967,733 years

1 sibling around Kepler-1518

Kepler-1518 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
Kepler-1518 b this	Sub-Neptune	3.05	9.53	5.112	1,351	2016
Kepler-1518 c	Sub-Neptune	2.90	8.75	9.631	1,094	2023

Kepler-1518 b Planet Profile

Physical Specs

Radius

3.05 R⊕

Radius (Jupiter)

0.272 R♃

Mass

9.53 M⊕

Mass (Jupiter)

0.030 M♃

Density

1.85 g/cm³

Surface Gravity

1.02 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.165

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

#472of 1978

top 23.8%

This planet

3.05R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-791 b 3.05 R⊕ Kepler-1204 b 3.05 R⊕ HD 168009 b 3.05 R⊕

Metric	Earth	Kepler-1518 b	Jupiter
Radius (R⊕)	1.00	3.05	11.21
Mass (M⊕)	1.00	9.53	317.83
Density (g/cm³)	5.51	1.85	1.33
Surface Gravity (g)	1.00	1.02	2.53
Insolation (S⊕)	1.00	1,079.46	0.037

Star Catalogue Identifiers

TIC

TIC 239289191

Gaia DR2

Gaia DR2 2082161219824397568

Gaia DR3

Gaia DR3 2082161219824397568

System

Kepler-1518

Percentile among Sub-Neptune cohort

Radius 3.050 R⊕ · percentile 76 / cohort 1978

Mass 9.530 M⊕ · percentile 69 / cohort 1978

Orbital period 5.11 d · percentile 13 / cohort 1946

Distance 903.51 pc · percentile 72 / cohort 1975

ESI 0.165 · percentile 3 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

5.112 days

Semi-major axis

0.0593 AU

Eccentricity

0.000

Inclination

76.53 °

Year Length

A year here lasts approximately 5.11 Earth days (1.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0593 AU.

Transit Fingerprint

Depth

0.027 %

Duration

2.960 h

Impact parameter b

0.201

Rp / R★

0.015312

Transit midpoint (BJD)

2,454,966.7565

Photometric dip

Transit produces a flux drop of 268 ppm lasting ≈ 2.96 h.

Extended Orbital Architecture

Planet / star radius ratio

0.015312

Semi-major axis / stellar radius

4.130

Impact parameter (b)

0.201

Transit mid-time (BJD)

2,454,966.7565

Angular separation (arcsec)

0.06560

Eq. Temperature

1,351K

(1078 °C)

Insolation (S⊕)

1,079.46

Earth = 1.00

Earth Similarity (ESI)

0.165

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-1518

Spectral Class

F-type yellow-white

Effective Temperature

6,846 K — hotter than the Sun (5,778 K)

Estimated Age

1.48 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.880 R☉

Stellar Mass

1.540 M☉

Metallicity [Fe/H]

0.06

Extended Stellar Properties

Surface gravity (log g)

4.080 dex

Stellar density

0.543 g/cm³

Metallicity ratio

[Fe/H]

Distance

903.51 parsec

Light-years 2,946.85 ly

V-band magnitude

13.37 mag

Voyager-speed travel 51,967,733 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.078 mas

Total Proper Motion

10.736 mas/yr

PM Right Ascension

-6.62 mas/yr

PM Declination

-8.45 mas/yr

Galactic Cartesian (pc)

x = 0.357 · y = -0.610 · z = 0.707

Equatorial (J2000)

RA 300.33234° · Dec 44.98611°

Galactic ℓ, b

80.032° · 7.663°

Ecliptic λ, β

322.014° · 63.053°

HTM-20 index

-1183964363