Key parameters at a glance

A radius of 2.48 Earth radii
A mass of 6.71 Earth masses
Surface gravity around 1.09 g
An orbital period of 12.110 days
Semi-major axis 0.1075 AU
Equilibrium temperature 1,005 K (732 °C)
Distance from Earth 4,899.91 light-years
Earth Similarity Index 0.250
Travel time at Voyager 1 speed 86,409,852 years

3 siblings around Kepler-758

Kepler-758 b shares its host star with 3 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
Kepler-758 c	Super-Earth	1.69	3.50	4.758	1,372	2016
Kepler-758 e	Super-Earth	1.53	2.96	8.193	1,144	2016
Kepler-758 b this	Sub-Neptune	2.48	6.71	12.110	1,005	2016
Kepler-758 d	Sub-Neptune	2.12	5.14	20.497	843	2016

Kepler-758 b Planet Profile

Physical Specs

Radius

2.48 R⊕

Radius (Jupiter)

0.221 R♃

Mass

6.71 M⊕

Mass (Jupiter)

0.021 M♃

Density

2.42 g/cm³

Surface Gravity

1.09 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.250

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

#1212of 1978

top 61.2%

This planet

2.48R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

K2-15 b 2.48 R⊕ Kepler-256 d 2.48 R⊕ Kepler-266 b 2.48 R⊕

Metric	Earth	Kepler-758 b	Jupiter
Radius (R⊕)	1.00	2.48	11.21
Mass (M⊕)	1.00	6.71	317.83
Density (g/cm³)	5.51	2.42	1.33
Surface Gravity (g)	1.00	1.09	2.53
Insolation (S⊕)	1.00	349.19	0.037

Star Catalogue Identifiers

TIC

TIC 137968594

Gaia DR2

Gaia DR2 2053552270863859712

Gaia DR3

Gaia DR3 2053552270863859712

System

Kepler-758

Percentile among Sub-Neptune cohort

Radius 2.480 R⊕ · percentile 38 / cohort 1978

Mass 6.710 M⊕ · percentile 36 / cohort 1978

Orbital period 12.11 d · percentile 42 / cohort 1946

Distance 1,502.32 pc · percentile 93 / cohort 1975

ESI 0.250 · percentile 16 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

12.110 days

Semi-major axis

0.1075 AU

Eccentricity

0.000

Inclination

81.62 °

Year Length

A year here lasts approximately 12.11 Earth days (3.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1075 AU.

Transit Fingerprint

Depth

0.028 %

Duration

5.800 h

Impact parameter b

0.410

Rp / R★

0.015831

Transit midpoint (BJD)

2,454,973.2129

Photometric dip

Transit produces a flux drop of 285 ppm lasting ≈ 5.80 h.

Extended Orbital Architecture

Planet / star radius ratio

0.015831

Semi-major axis / stellar radius

15.300

Impact parameter (b)

0.410

Transit mid-time (BJD)

2,454,973.2129

Angular separation (arcsec)

0.07160

Eq. Temperature

1,005K

(732 °C)

Insolation (S⊕)

349.19

Earth = 1.00

Earth Similarity (ESI)

0.250

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-758

Spectral Class

F-type yellow-white

Effective Temperature

6,228 K — hotter than the Sun (5,778 K)

Estimated Age

3.80 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.420 R☉

Stellar Mass

1.160 M☉

Metallicity [Fe/H]

-0.10

Extended Stellar Properties

Surface gravity (log g)

4.190 dex

Stellar density

0.330 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,502.32 parsec

Light-years 4,899.91 ly

V-band magnitude

14.38 mag

Voyager-speed travel 86,409,852 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.637 mas

Total Proper Motion

6.786 mas/yr

PM Right Ascension

-1.13 mas/yr

PM Declination

-6.69 mas/yr

Galactic Cartesian (pc)

x = 0.295 · y = -0.693 · z = 0.658

Equatorial (J2000)

RA 293.08461° · Dec 41.13540°

Galactic ℓ, b

74.025° · 10.427°

Ecliptic λ, β

308.290° · 61.541°

HTM-20 index

1755141653