Key parameters at a glance

A radius of 2.92 Earth radii
A mass of 8.85 Earth masses
Surface gravity around 1.04 g
An orbital period of 82.177 days
Semi-major axis 0.3730 AU
Equilibrium temperature 441 K (168 °C)
Distance from Earth 5,115.37 light-years
Earth Similarity Index 0.520
Travel time at Voyager 1 speed 90,209,465 years

Kepler-1475 b Planet Profile

Physical Specs

Radius

2.92 R⊕

Radius (Jupiter)

0.261 R♃

Mass

8.85 M⊕

Mass (Jupiter)

0.028 M♃

Density

1.95 g/cm³

Surface Gravity

1.04 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.520

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

#600of 1978

top 30.3%

This planet

2.92R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-769 b 2.92 R⊕ Kepler-153 b 2.92 R⊕ Kepler-709 b 2.92 R⊕

Metric	Earth	Kepler-1475 b	Jupiter
Radius (R⊕)	1.00	2.92	11.21
Mass (M⊕)	1.00	8.85	317.83
Density (g/cm³)	5.51	1.95	1.33
Surface Gravity (g)	1.00	1.04	2.53
Insolation (S⊕)	1.00	13.76	0.037

Star Catalogue Identifiers

TIC

TIC 271970692

Gaia DR2

Gaia DR2 2079750265699679872

Gaia DR3

Gaia DR3 2079750265699679872

System

Kepler-1475

Percentile among Sub-Neptune cohort

Radius 2.920 R⊕ · percentile 69 / cohort 1978

Mass 8.850 M⊕ · percentile 63 / cohort 1978

Orbital period 82.18 d · percentile 92 / cohort 1946

Distance 1,568.38 pc · percentile 94 / cohort 1975

ESI 0.520 · percentile 73 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

82.177 days

Semi-major axis

0.3730 AU

Eccentricity

0.000

Inclination

89.99 °

Year Length

A year here lasts approximately 82.18 Earth days (22.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.3730 AU.

Transit Fingerprint

Depth

0.055 %

Duration

9.165 h

Impact parameter b

0.237

Rp / R★

0.021162

Transit midpoint (BJD)

2,455,030.1932

Photometric dip

Transit produces a flux drop of 546 ppm lasting ≈ 9.17 h.

Extended Orbital Architecture

Planet / star radius ratio

0.021162

Semi-major axis / stellar radius

74.010

Impact parameter (b)

0.237

Transit mid-time (BJD)

2,455,030.1932

Angular separation (arcsec)

0.23800

Eq. Temperature

441K

(168 °C)

Insolation (S⊕)

13.76

Earth = 1.00

Earth Similarity (ESI)

0.520

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-1475

Spectral Class

F-type yellow-white

Effective Temperature

6,214 K — hotter than the Sun (5,778 K)

Estimated Age

2.82 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.280 R☉

Stellar Mass

1.180 M☉

Metallicity [Fe/H]

0.03

Extended Stellar Properties

Surface gravity (log g)

4.290 dex

Stellar density

0.883 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,568.38 parsec

Light-years 5,115.37 ly

V-band magnitude

15.36 mag

Voyager-speed travel 90,209,465 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.610 mas

Total Proper Motion

5.190 mas/yr

PM Right Ascension

-0.61 mas/yr

PM Declination

-5.15 mas/yr

Galactic Cartesian (pc)

x = 0.311 · y = -0.639 · z = 0.704

Equatorial (J2000)

RA 295.94828° · Dec 44.75310°

Galactic ℓ, b

78.271° · 10.248°

Ecliptic λ, β

315.454° · 64.153°

HTM-20 index

-1975977655