Key parameters at a glance

A radius of 3.26 Earth radii
A mass of 10.70 Earth masses
Surface gravity around 1.01 g
An orbital period of 21.805 days
Semi-major axis 0.1406 AU
Equilibrium temperature 543 K (270 °C)
Distance from Earth 2,485.57 light-years
Earth Similarity Index 0.415
Travel time at Voyager 1 speed 43,833,076 years

Kepler-726 b Planet Profile

Physical Specs

Radius

3.26 R⊕

Radius (Jupiter)

0.291 R♃

Mass

10.70 M⊕

Mass (Jupiter)

0.034 M♃

Density

1.70 g/cm³

Surface Gravity

1.01 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.415

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

#305of 1978

top 15.4%

This planet

3.26R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-987 b 3.26 R⊕ Kepler-368 b 3.26 R⊕ Kepler-287 c 3.26 R⊕

Metric	Earth	Kepler-726 b	Jupiter
Radius (R⊕)	1.00	3.26	11.21
Mass (M⊕)	1.00	10.70	317.83
Density (g/cm³)	5.51	1.70	1.33
Surface Gravity (g)	1.00	1.01	2.53
Insolation (S⊕)	1.00	25.30	0.037

Star Catalogue Identifiers

TIC

TIC 63000832

Gaia DR2

Gaia DR2 2126577881808038016

Gaia DR3

Gaia DR3 2126577881808038016

System

Kepler-726

Percentile among Sub-Neptune cohort

Radius 3.260 R⊕ · percentile 84 / cohort 1978

Mass 10.700 M⊕ · percentile 78 / cohort 1978

Orbital period 21.80 d · percentile 65 / cohort 1946

Distance 762.08 pc · percentile 63 / cohort 1975

ESI 0.415 · percentile 55 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

21.805 days

Semi-major axis

0.1406 AU

Eccentricity

0.000

Inclination

88.76 °

Year Length

A year here lasts approximately 21.80 Earth days (6.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1406 AU.

Transit Fingerprint

Depth

0.114 %

Duration

3.393 h

Impact parameter b

0.751

Rp / R★

0.034613

Transit midpoint (BJD)

2,455,023.4978

Photometric dip

Transit produces a flux drop of 1,145 ppm lasting ≈ 3.39 h.

Extended Orbital Architecture

Planet / star radius ratio

0.034613

Semi-major axis / stellar radius

36.500

Impact parameter (b)

0.751

Transit mid-time (BJD)

2,455,023.4978

Angular separation (arcsec)

0.18400

Eq. Temperature

543K

(270 °C)

Insolation (S⊕)

25.30

Earth = 1.00

Earth Similarity (ESI)

0.415

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-726

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,452 K — cooler than the Sun (5,778 K)

Estimated Age

4.47 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.850 R☉

Stellar Mass

0.880 M☉

Metallicity [Fe/H]

-0.09

Extended Stellar Properties

Surface gravity (log g)

4.530 dex

Stellar density

1.667 g/cm³

Metallicity ratio

[Fe/H]

Distance

762.08 parsec

Light-years 2,485.57 ly

V-band magnitude

15.36 mag

Voyager-speed travel 43,833,076 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.284 mas

Total Proper Motion

9.250 mas/yr

PM Right Ascension

-5.90 mas/yr

PM Declination

7.12 mas/yr

Galactic Cartesian (pc)

x = 0.262 · y = -0.658 · z = 0.706

Equatorial (J2000)

RA 291.71728° · Dec 44.88735°

Galactic ℓ, b

77.008° · 12.985°

Ecliptic λ, β

309.045° · 65.409°

HTM-20 index

1350687576