Key parameters at a glance

A radius of 3.08 Earth radii
A mass of 9.69 Earth masses
Surface gravity around 1.02 g
An orbital period of 14.006 days
Semi-major axis 0.1126 AU
Equilibrium temperature 807 K (534 °C)
Distance from Earth 2,653.39 light-years
Earth Similarity Index 0.289
Travel time at Voyager 1 speed 46,792,587 years

Kepler-476 b Planet Profile

Physical Specs

Radius

3.08 R⊕

Radius (Jupiter)

0.275 R♃

Mass

9.69 M⊕

Mass (Jupiter)

0.031 M♃

Density

1.82 g/cm³

Surface Gravity

1.02 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.289

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

#448of 1978

top 22.6%

This planet

3.08R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-941 b 3.08 R⊕ Kepler-681 b 3.08 R⊕ Kepler-232 b 3.08 R⊕

Metric	Earth	Kepler-476 b	Jupiter
Radius (R⊕)	1.00	3.08	11.21
Mass (M⊕)	1.00	9.69	317.83
Density (g/cm³)	5.51	1.82	1.33
Surface Gravity (g)	1.00	1.02	2.53
Insolation (S⊕)	1.00	100.09	0.037

Star Catalogue Identifiers

TIC

TIC 271430806

Gaia DR2

Gaia DR2 2078122984191734016

System

Kepler-476

Percentile among Sub-Neptune cohort

Radius 3.080 R⊕ · percentile 77 / cohort 1978

Mass 9.690 M⊕ · percentile 71 / cohort 1978

Orbital period 14.01 d · percentile 48 / cohort 1946

Distance 813.54 pc · percentile 66 / cohort 1975

ESI 0.289 · percentile 25 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

14.006 days

Semi-major axis

0.1126 AU

Eccentricity

0.000

Inclination

88.33 °

Year Length

A year here lasts approximately 14.01 Earth days (3.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1126 AU.

Transit Fingerprint

Depth

0.072 %

Duration

4.681 h

Impact parameter b

0.501

Rp / R★

0.025544

Transit midpoint (BJD)

2,454,975.2093

Photometric dip

Transit produces a flux drop of 716 ppm lasting ≈ 4.68 h.

Extended Orbital Architecture

Planet / star radius ratio

0.025544

Semi-major axis / stellar radius

19.480

Impact parameter (b)

0.501

Transit mid-time (BJD)

2,454,975.2093

Angular separation (arcsec)

0.13800

Eq. Temperature

807K

(534 °C)

Insolation (S⊕)

100.09

Earth = 1.00

Earth Similarity (ESI)

0.289

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-476

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,837 K — hotter than the Sun (5,778 K)

Estimated Age

5.37 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.090 R☉

Stellar Mass

1.030 M☉

Metallicity [Fe/H]

0.04

Extended Stellar Properties

Surface gravity (log g)

4.380 dex

Stellar density

0.826 g/cm³

Metallicity ratio

[Fe/H]

Distance

813.54 parsec

Light-years 2,653.39 ly

V-band magnitude

14.02 mag

Voyager-speed travel 46,792,587 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Total Proper Motion

11.124 mas/yr

PM Right Ascension

-4.99 mas/yr

PM Declination

9.94 mas/yr

Galactic Cartesian (pc)

x = 0.306 · y = -0.651 · z = 0.694

Equatorial (J2000)

RA 295.16376° · Dec 43.96307°

Galactic ℓ, b

77.294° · 10.371°

Ecliptic λ, β

313.579° · 63.644°

HTM-20 index

-1324132421