Key parameters at a glance

A radius of 1.69 Earth radii
A mass of 3.50 Earth masses
Surface gravity around 1.23 g
An orbital period of 33.241 days
Semi-major axis 0.1975 AU
Equilibrium temperature 486 K (213 °C)
Distance from Earth 2,070.78 light-years
Earth Similarity Index 0.585
Travel time at Voyager 1 speed 36,518,274 years

Kepler-1166 b Planet Profile

Physical Specs

Radius

1.69 R⊕

Radius (Jupiter)

0.151 R♃

Mass

3.50 M⊕

Mass (Jupiter)

0.011 M♃

Density

3.98 g/cm³

Surface Gravity

1.23 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.585

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

#415of 1176

top 35.2%

This planet

1.69R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-372 d 1.69 R⊕ Kepler-968 c 1.69 R⊕ Kepler-269 c 1.69 R⊕

Metric	Earth	Kepler-1166 b	Jupiter
Radius (R⊕)	1.00	1.69	11.21
Mass (M⊕)	1.00	3.50	317.83
Density (g/cm³)	5.51	3.98	1.33
Surface Gravity (g)	1.00	1.23	2.53
Insolation (S⊕)	1.00	14.19	0.037

Star Catalogue Identifiers

TIC

TIC 406951266

Gaia DR2

Gaia DR2 2133173542823321344

Gaia DR3

Gaia DR3 2133173542823321344

System

Kepler-1166

Percentile among Super-Earth cohort

Radius 1.690 R⊕ · percentile 64 / cohort 1176

Mass 3.500 M⊕ · percentile 58 / cohort 1176

Orbital period 33.24 d · percentile 93 / cohort 1164

Distance 634.91 pc · percentile 58 / cohort 1171

ESI 0.585 · percentile 80 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

33.241 days

Semi-major axis

0.1975 AU

Eccentricity

0.000

Inclination

89.75 °

Year Length

A year here lasts approximately 33.24 Earth days (9.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1975 AU.

Transit Fingerprint

Depth

0.034 %

Duration

4.982 h

Impact parameter b

0.880

Rp / R★

0.017516

Transit midpoint (BJD)

2,454,976.4625

Photometric dip

Transit produces a flux drop of 342 ppm lasting ≈ 4.98 h.

Extended Orbital Architecture

Planet / star radius ratio

0.017516

Semi-major axis / stellar radius

53.780

Impact parameter (b)

0.880

Transit mid-time (BJD)

2,454,976.4625

Angular separation (arcsec)

0.31100

Eq. Temperature

486K

(213 °C)

Insolation (S⊕)

14.19

Earth = 1.00

Earth Similarity (ESI)

0.585

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-1166

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,446 K — cooler than the Sun (5,778 K)

Estimated Age

4.90 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.860 R☉

Stellar Mass

0.900 M☉

Metallicity [Fe/H]

-0.02

Extended Stellar Properties

Surface gravity (log g)

4.530 dex

Stellar density

2.663 g/cm³

Metallicity ratio

[Fe/H]

Distance

634.91 parsec

Light-years 2,070.78 ly

V-band magnitude

14.65 mag

Voyager-speed travel 36,518,274 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.546 mas

Total Proper Motion

0.166 mas/yr

PM Right Ascension

0.13 mas/yr

PM Declination

-0.10 mas/yr

Galactic Cartesian (pc)

x = 0.219 · y = -0.591 · z = 0.776

Equatorial (J2000)

RA 290.34850° · Dec 50.90284°

Galactic ℓ, b

82.281° · 16.304°

Ecliptic λ, β

313.164° · 71.305°

HTM-20 index

266440073