Key parameters at a glance

A radius of 2.36 Earth radii
A mass of 6.17 Earth masses
Surface gravity around 1.11 g
An orbital period of 1.932 days
Semi-major axis 0.0298 AU
Equilibrium temperature 1,290 K (1017 °C)
Distance from Earth 1,122.80 light-years
Earth Similarity Index 0.193
Travel time at Voyager 1 speed 19,800,494 years

Kepler-1066 b Planet Profile

Physical Specs

Radius

2.36 R⊕

Radius (Jupiter)

0.211 R♃

Mass

6.17 M⊕

Mass (Jupiter)

0.019 M♃

Density

2.58 g/cm³

Surface Gravity

1.11 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.193

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

#1395of 1978

top 70.5%

This planet

2.36R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1022 b 2.36 R⊕ Kepler-482 b 2.36 R⊕ Kepler-184 b 2.36 R⊕

Metric	Earth	Kepler-1066 b	Jupiter
Radius (R⊕)	1.00	2.36	11.21
Mass (M⊕)	1.00	6.17	317.83
Density (g/cm³)	5.51	2.58	1.33
Surface Gravity (g)	1.00	1.11	2.53
Insolation (S⊕)	1.00	710.02	0.037

Star Catalogue Identifiers

TIC

TIC 268379849

Gaia DR2

Gaia DR2 2085502463860057984

Gaia DR3

Gaia DR3 2085502463860057984

System

Kepler-1066

Percentile among Sub-Neptune cohort

Radius 2.360 R⊕ · percentile 29 / cohort 1978

Mass 6.170 M⊕ · percentile 28 / cohort 1978

Orbital period 1.93 d · percentile 2 / cohort 1946

Distance 344.25 pc · percentile 38 / cohort 1975

ESI 0.193 · percentile 6 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

1.932 days

Semi-major axis

0.0298 AU

Eccentricity

0.000

Inclination

80.37 °

Year Length

A year here lasts approximately 1.93 Earth days (0.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0298 AU.

Transit Fingerprint

Depth

0.049 %

Duration

1.628 h

Impact parameter b

0.780

Rp / R★

0.022266

Transit midpoint (BJD)

2,454,964.7658

Photometric dip

Transit produces a flux drop of 492 ppm lasting ≈ 1.63 h.

Extended Orbital Architecture

Planet / star radius ratio

0.022266

Semi-major axis / stellar radius

6.000

Impact parameter (b)

0.780

Transit mid-time (BJD)

2,454,964.7658

Angular separation (arcsec)

0.08660

Eq. Temperature

1,290K

(1017 °C)

Insolation (S⊕)

710.02

Earth = 1.00

Earth Similarity (ESI)

0.193

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-1066

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,762 K — cooler than the Sun (5,778 K)

Estimated Age

3.80 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.980 R☉

Stellar Mass

0.980 M☉

Metallicity [Fe/H]

-0.03

Extended Stellar Properties

Surface gravity (log g)

4.450 dex

Stellar density

1.480 g/cm³

Systemic radial velocity

-11.30 km/s

Metallicity ratio

[Fe/H]

Distance

344.25 parsec

Light-years 1,122.80 ly

V-band magnitude

13.12 mag

Voyager-speed travel 19,800,494 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

2.876 mas

Total Proper Motion

9.518 mas/yr

PM Right Ascension

9.52 mas/yr

PM Declination

-0.08 mas/yr

Galactic Cartesian (pc)

x = 0.332 · y = -0.603 · z = 0.725

Equatorial (J2000)

RA 298.86662° · Dec 46.50223°

Galactic ℓ, b

80.828° · 9.314°

Ecliptic λ, β

321.477° · 64.867°

HTM-20 index

238015760