Key parameters at a glance

A radius of 3.06 Earth radii
A mass of 9.59 Earth masses
Surface gravity around 1.02 g
An orbital period of 5.661 days
Semi-major axis 0.0609 AU
Equilibrium temperature 1,115 K (842 °C)
Distance from Earth 2,744.59 light-years
Earth Similarity Index 0.205
Travel time at Voyager 1 speed 48,400,837 years

Kepler-474 b Planet Profile

Physical Specs

Radius

3.06 R⊕

Radius (Jupiter)

0.273 R♃

Mass

9.59 M⊕

Mass (Jupiter)

0.030 M♃

Density

1.84 g/cm³

Surface Gravity

1.02 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.205

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

#466of 1978

top 23.5%

This planet

3.06R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-351 b 3.06 R⊕ Kepler-151 b 3.06 R⊕ Kepler-760 b 3.06 R⊕

Metric	Earth	Kepler-474 b	Jupiter
Radius (R⊕)	1.00	3.06	11.21
Mass (M⊕)	1.00	9.59	317.83
Density (g/cm³)	5.51	1.84	1.33
Surface Gravity (g)	1.00	1.02	2.53
Insolation (S⊕)	1.00	671.06	0.037

Star Catalogue Identifiers

TIC

TIC 63210391

Gaia DR2

Gaia DR2 2125972321478224896

Gaia DR3

Gaia DR3 2125972321478224896

System

Kepler-474

Percentile among Sub-Neptune cohort

Radius 3.060 R⊕ · percentile 76 / cohort 1978

Mass 9.590 M⊕ · percentile 70 / cohort 1978

Orbital period 5.66 d · percentile 15 / cohort 1946

Distance 841.50 pc · percentile 68 / cohort 1975

ESI 0.205 · percentile 7 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

5.661 days

Semi-major axis

0.0609 AU

Eccentricity

0.000

Inclination

86.77 °

Year Length

A year here lasts approximately 5.66 Earth days (1.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0609 AU.

Transit Fingerprint

Depth

0.074 %

Duration

4.672 h

Impact parameter b

0.663

Rp / R★

0.025910

Transit midpoint (BJD)

2,454,970.4155

Photometric dip

Transit produces a flux drop of 738 ppm lasting ≈ 4.67 h.

Extended Orbital Architecture

Planet / star radius ratio

0.025910

Semi-major axis / stellar radius

7.250

Impact parameter (b)

0.663

Transit mid-time (BJD)

2,454,970.4155

Angular separation (arcsec)

0.07240

Eq. Temperature

1,115K

(842 °C)

Insolation (S⊕)

671.06

Earth = 1.00

Earth Similarity (ESI)

0.205

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-474

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,785 K — hotter than the Sun (5,778 K)

Estimated Age

6.76 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.080 R☉

Stellar Mass

0.990 M☉

Metallicity [Fe/H]

-0.01

Extended Stellar Properties

Surface gravity (log g)

4.360 dex

Stellar density

0.240 g/cm³

Metallicity ratio

[Fe/H]

Distance

841.50 parsec

Light-years 2,744.59 ly

V-band magnitude

13.63 mag

Voyager-speed travel 48,400,837 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.160 mas

Total Proper Motion

3.745 mas/yr

PM Right Ascension

-0.35 mas/yr

PM Declination

3.73 mas/yr

Galactic Cartesian (pc)

x = 0.274 · y = -0.667 · z = 0.693

Equatorial (J2000)

RA 292.32152° · Dec 43.88117°

Galactic ℓ, b

76.273° · 12.158°

Ecliptic λ, β

309.165° · 64.315°

HTM-20 index

-557125409