Key parameters at a glance

A radius of 2.16 Earth radii
A mass of 5.31 Earth masses
Surface gravity around 1.14 g
An orbital period of 36.433 days
Semi-major axis 0.2108 AU
Equilibrium temperature 561 K (288 °C)
Distance from Earth 3,851.58 light-years
Earth Similarity Index 0.473
Travel time at Voyager 1 speed 67,922,543 years

Kepler-1474 b Planet Profile

Physical Specs

Radius

2.16 R⊕

Radius (Jupiter)

0.193 R♃

Mass

5.31 M⊕

Mass (Jupiter)

0.017 M♃

Density

2.90 g/cm³

Surface Gravity

1.14 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.473

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

#1731of 1978

top 87.5%

This planet

2.16R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-291 b 2.16 R⊕ Kepler-142 d 2.16 R⊕ Kepler-308 c 2.16 R⊕

Metric	Earth	Kepler-1474 b	Jupiter
Radius (R⊕)	1.00	2.16	11.21
Mass (M⊕)	1.00	5.31	317.83
Density (g/cm³)	5.51	2.90	1.33
Surface Gravity (g)	1.00	1.14	2.53
Insolation (S⊕)	1.00	21.39	0.037

Star Catalogue Identifiers

TIC

TIC 271255614

Gaia DR2

Gaia DR2 2080057269961317120

Gaia DR3

Gaia DR3 2080057269961317120

System

Kepler-1474

Percentile among Sub-Neptune cohort

Radius 2.160 R⊕ · percentile 12 / cohort 1978

Mass 5.310 M⊕ · percentile 13 / cohort 1978

Orbital period 36.43 d · percentile 78 / cohort 1946

Distance 1,180.90 pc · percentile 86 / cohort 1975

ESI 0.473 · percentile 67 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

36.433 days

Semi-major axis

0.2108 AU

Eccentricity

0.000

Inclination

89.77 °

Year Length

A year here lasts approximately 36.43 Earth days (10.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2108 AU.

Transit Fingerprint

Depth

0.041 %

Duration

4.213 h

Impact parameter b

0.250

Rp / R★

0.019446

Transit midpoint (BJD)

2,454,965.9110

Photometric dip

Transit produces a flux drop of 407 ppm lasting ≈ 4.21 h.

Extended Orbital Architecture

Planet / star radius ratio

0.019446

Semi-major axis / stellar radius

67.350

Impact parameter (b)

0.250

Transit mid-time (BJD)

2,454,965.9110

Angular separation (arcsec)

0.17900

Eq. Temperature

561K

(288 °C)

Insolation (S⊕)

21.39

Earth = 1.00

Earth Similarity (ESI)

0.473

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-1474

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,870 K — hotter than the Sun (5,778 K)

Estimated Age

3.80 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.040 R☉

Stellar Mass

1.040 M☉

Metallicity [Fe/H]

0.04

Extended Stellar Properties

Surface gravity (log g)

4.420 dex

Stellar density

3.499 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,180.90 parsec

Light-years 3,851.58 ly

V-band magnitude

15.35 mag

Voyager-speed travel 67,922,543 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.819 mas

Total Proper Motion

3.301 mas/yr

PM Right Ascension

-2.32 mas/yr

PM Declination

-2.35 mas/yr

Galactic Cartesian (pc)

x = 0.291 · y = -0.633 · z = 0.718

Equatorial (J2000)

RA 294.69403° · Dec 45.86681°

Galactic ℓ, b

78.856° · 11.547°

Ecliptic λ, β

314.601° · 65.526°

HTM-20 index

-1264908850