Key parameters at a glance

A radius of 14.96 Earth radii
An orbital period of 5.014 days
Semi-major axis 0.0626 AU
Equilibrium temperature 1,308 K (1035 °C)
Distance from Earth 4,075.03 light-years
Earth Similarity Index 0.032
Travel time at Voyager 1 speed 71,863,074 years

Kepler-471 b Planet Profile

Physical Specs

Radius

14.96 R⊕

Radius (Jupiter)

1.335 R♃

Mass

— M⊕

Mass (Jupiter)

— M♃

Density

— g/cm³

Surface Gravity

— g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.032

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

#234of 1771

top 13.2%

This planet

14.96R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

TrES-3 b 14.98 R⊕ HAT-P-35 b 14.93 R⊕ HAT-P-58 b 14.93 R⊕

Metric	Earth	Kepler-471 b	Jupiter
Radius (R⊕)	1.00	14.96	11.21
Mass (M⊕)	1.00	—	317.83
Density (g/cm³)	5.51	—	1.33
Surface Gravity (g)	1.00	—	2.53
Insolation (S⊕)	1.00	1,146.88	0.037

Star Catalogue Identifiers

TIC

TIC 268604331

Gaia DR2

Gaia DR2 2075972481191725696

Gaia DR3

Gaia DR3 2075972481191725696

System

Kepler-471

Percentile among Gas Giant cohort

Radius 14.960 R⊕ · percentile 87 / cohort 1771

Orbital period 5.01 d · percentile 37 / cohort 1533

Distance 1,249.41 pc · percentile 88 / cohort 1759

ESI 0.032 · percentile 1 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

5.014 days

Semi-major axis

0.0626 AU

Eccentricity

0.000

Inclination

89.58 °

Year Length

A year here lasts approximately 5.01 Earth days (1.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0626 AU.

Transit Fingerprint

Depth

0.679 %

Duration

4.612 h

Impact parameter b

0.012

Rp / R★

0.075863

Transit midpoint (BJD)

2,454,966.1743

Photometric dip

Transit produces a flux drop of 6,789 ppm lasting ≈ 4.61 h.

Extended Orbital Architecture

Planet / star radius ratio

0.075863

Semi-major axis / stellar radius

8.958

Impact parameter (b)

0.012

Transit mid-time (BJD)

2,454,966.1743

Angular separation (arcsec)

0.05010

Eq. Temperature

1,308K

(1035 °C)

Insolation (S⊕)

1,146.88

Earth = 1.00

Earth Similarity (ESI)

0.032

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-471

Spectral Class

F-type yellow-white

Effective Temperature

6,733 K — hotter than the Sun (5,778 K)

Estimated Age

1.58 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.800 R☉

Stellar Mass

1.490 M☉

Metallicity [Fe/H]

0.07

Extended Stellar Properties

Surface gravity (log g)

4.100 dex

Stellar density

0.541 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,249.41 parsec

Light-years 4,075.03 ly

V-band magnitude

13.77 mag

Voyager-speed travel 71,863,074 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.772 mas

Total Proper Motion

4.155 mas/yr

PM Right Ascension

-3.56 mas/yr

PM Declination

-2.14 mas/yr

Galactic Cartesian (pc)

x = 0.353 · y = -0.634 · z = 0.688

Equatorial (J2000)

RA 299.09752° · Dec 43.49759°

Galactic ℓ, b

78.285° · 7.662°

Ecliptic λ, β

318.895° · 62.087°

HTM-20 index

1826365612