Key parameters at a glance

A radius of 2.93 Earth radii
A mass of 8.91 Earth masses
Surface gravity around 1.04 g
An orbital period of 3.601 days
Semi-major axis 0.0428 AU
Equilibrium temperature 996 K (723 °C)
Distance from Earth 3,279.27 light-years
Earth Similarity Index 0.236
Travel time at Voyager 1 speed 57,829,928 years

Kepler-736 b Planet Profile

Physical Specs

Radius

2.93 R⊕

Radius (Jupiter)

0.261 R♃

Mass

8.91 M⊕

Mass (Jupiter)

0.028 M♃

Density

1.95 g/cm³

Surface Gravity

1.04 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.236

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

#585of 1978

top 29.5%

This planet

2.93R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

TOI-125 d 2.93 R⊕ Kepler-221 c 2.93 R⊕ TOI-2015 c 2.93 R⊕

Metric	Earth	Kepler-736 b	Jupiter
Radius (R⊕)	1.00	2.93	11.21
Mass (M⊕)	1.00	8.91	317.83
Density (g/cm³)	5.51	1.95	1.33
Surface Gravity (g)	1.00	1.04	2.53
Insolation (S⊕)	1.00	233.03	0.037

Star Catalogue Identifiers

TIC

TIC 351909600

Gaia DR2

Gaia DR2 2106546978971754368

Gaia DR3

Gaia DR3 2106546978971754368

System

Kepler-736

Percentile among Sub-Neptune cohort

Radius 2.930 R⊕ · percentile 70 / cohort 1978

Mass 8.910 M⊕ · percentile 64 / cohort 1978

Orbital period 3.60 d · percentile 7 / cohort 1946

Distance 1,005.43 pc · percentile 78 / cohort 1975

ESI 0.236 · percentile 13 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

3.601 days

Semi-major axis

0.0428 AU

Eccentricity

0.000

Inclination

89.90 °

Year Length

A year here lasts approximately 3.60 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0428 AU.

Transit Fingerprint

Depth

0.078 %

Duration

2.522 h

Impact parameter b

0.021

Rp / R★

0.032806

Transit midpoint (BJD)

2,455,004.9910

Photometric dip

Transit produces a flux drop of 778 ppm lasting ≈ 2.52 h.

Extended Orbital Architecture

Planet / star radius ratio

0.032806

Semi-major axis / stellar radius

12.403

Impact parameter (b)

0.021

Transit mid-time (BJD)

2,455,004.9910

Angular separation (arcsec)

0.04260

Eq. Temperature

996K

(723 °C)

Insolation (S⊕)

233.03

Earth = 1.00

Earth Similarity (ESI)

0.236

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-736

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,217 K — cooler than the Sun (5,778 K)

Estimated Age

4.27 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.810 R☉

Stellar Mass

0.860 M☉

Metallicity [Fe/H]

0.03

Extended Stellar Properties

Surface gravity (log g)

4.560 dex

Stellar density

2.783 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,005.43 parsec

Light-years 3,279.27 ly

V-band magnitude

15.81 mag

Voyager-speed travel 57,829,928 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.966 mas

Total Proper Motion

3.792 mas/yr

PM Right Ascension

-3.70 mas/yr

PM Declination

-0.85 mas/yr

Galactic Cartesian (pc)

x = 0.184 · y = -0.668 · z = 0.722

Equatorial (J2000)

RA 285.39131° · Dec 46.18093°

Galactic ℓ, b

76.419° · 17.565°

Ecliptic λ, β

299.447° · 68.053°

HTM-20 index

-1394062020