Key parameters at a glance

A radius of 3.39 Earth radii
A mass of 11.40 Earth masses
Surface gravity around 0.99 g
An orbital period of 6.100 days
Semi-major axis 0.0660 AU
Equilibrium temperature 990 K (717 °C)
Distance from Earth 7,493.83 light-years
Earth Similarity Index 0.224
Travel time at Voyager 1 speed 132,153,605 years

Kepler-766 b Planet Profile

Physical Specs

Radius

3.39 R⊕

Radius (Jupiter)

0.302 R♃

Mass

11.40 M⊕

Mass (Jupiter)

0.036 M♃

Density

1.61 g/cm³

Surface Gravity

0.99 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.224

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

#226of 1978

top 11.4%

This planet

3.39R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

K2-138 e 3.39 R⊕ Kepler-335 b 3.39 R⊕ Kepler-591 b 3.39 R⊕

Metric	Earth	Kepler-766 b	Jupiter
Radius (R⊕)	1.00	3.39	11.21
Mass (M⊕)	1.00	11.40	317.83
Density (g/cm³)	5.51	1.61	1.33
Surface Gravity (g)	1.00	0.99	2.53
Insolation (S⊕)	1.00	227.15	0.037

Star Catalogue Identifiers

TIC

TIC 138036952

Gaia DR2

Gaia DR2 2052234368740841600

Gaia DR3

Gaia DR3 2052234368740841600

System

Kepler-766

Percentile among Sub-Neptune cohort

Radius 3.390 R⊕ · percentile 88 / cohort 1978

Mass 11.400 M⊕ · percentile 82 / cohort 1978

Orbital period 6.10 d · percentile 18 / cohort 1946

Distance 2,297.62 pc · percentile 98 / cohort 1975

ESI 0.224 · percentile 10 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

6.100 days

Semi-major axis

0.0660 AU

Eccentricity

0.000

Inclination

89.92 °

Year Length

A year here lasts approximately 6.10 Earth days (1.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0660 AU.

Transit Fingerprint

Depth

0.077 %

Duration

4.749 h

Impact parameter b

0.817

Rp / R★

0.027345

Transit midpoint (BJD)

2,454,968.5867

Photometric dip

Transit produces a flux drop of 767 ppm lasting ≈ 4.75 h.

Extended Orbital Architecture

Planet / star radius ratio

0.027345

Semi-major axis / stellar radius

5.810

Impact parameter (b)

0.817

Transit mid-time (BJD)

2,454,968.5867

Angular separation (arcsec)

0.02870

Eq. Temperature

990K

(717 °C)

Insolation (S⊕)

227.15

Earth = 1.00

Earth Similarity (ESI)

0.224

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-766

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,992 K — hotter than the Sun (5,778 K)

Estimated Age

3.63 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.150 R☉

Stellar Mass

1.100 M☉

Metallicity [Fe/H]

0.09

Extended Stellar Properties

Surface gravity (log g)

4.360 dex

Stellar density

0.521 g/cm³

Metallicity ratio

[Fe/H]

Distance

2,297.62 parsec

Light-years 7,493.83 ly

V-band magnitude

15.83 mag

Voyager-speed travel 132,153,605 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

0.409 mas

Total Proper Motion

1.784 mas/yr

PM Right Ascension

-1.71 mas/yr

PM Declination

0.51 mas/yr

Galactic Cartesian (pc)

x = 0.310 · y = -0.725 · z = 0.615

Equatorial (J2000)

RA 293.18451° · Dec 37.96984°

Galactic ℓ, b

71.208° · 8.905°

Ecliptic λ, β

306.450° · 58.510°

HTM-20 index

1118132442