Key parameters at a glance

A radius of 1.77 Earth radii
A mass of 3.78 Earth masses
Surface gravity around 1.21 g
An orbital period of 3.789 days
Semi-major axis 0.0467 AU
Equilibrium temperature 1,158 K (885 °C)
Distance from Earth 2,553.32 light-years
Earth Similarity Index 0.241
Travel time at Voyager 1 speed 45,027,774 years

Kepler-1189 b Planet Profile

Physical Specs

Radius

1.77 R⊕

Radius (Jupiter)

0.158 R♃

Mass

3.78 M⊕

Mass (Jupiter)

0.012 M♃

Density

3.75 g/cm³

Surface Gravity

1.21 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.241

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

#293of 1176

top 24.8%

This planet

1.77R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

GJ 667 C c 1.77 R⊕ Kepler-286 e 1.77 R⊕ Kepler-215 c 1.77 R⊕

Metric	Earth	Kepler-1189 b	Jupiter
Radius (R⊕)	1.00	1.77	11.21
Mass (M⊕)	1.00	3.78	317.83
Density (g/cm³)	5.51	3.75	1.33
Surface Gravity (g)	1.00	1.21	2.53
Insolation (S⊕)	1.00	449.94	0.037

Star Catalogue Identifiers

TIC

TIC 267991349

Gaia DR2

Gaia DR2 2086474260339833088

Gaia DR3

Gaia DR3 2086474260339833088

System

Kepler-1189

Percentile among Super-Earth cohort

Radius 1.770 R⊕ · percentile 73 / cohort 1176

Mass 3.780 M⊕ · percentile 67 / cohort 1176

Orbital period 3.79 d · percentile 30 / cohort 1164

Distance 782.85 pc · percentile 66 / cohort 1171

ESI 0.241 · percentile 21 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

3.789 days

Semi-major axis

0.0467 AU

Eccentricity

0.000

Inclination

88.98 °

Year Length

A year here lasts approximately 3.79 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0467 AU.

Transit Fingerprint

Depth

0.014 %

Duration

3.492 h

Impact parameter b

0.183

Rp / R★

0.014001

Transit midpoint (BJD)

2,454,967.6227

Photometric dip

Transit produces a flux drop of 136 ppm lasting ≈ 3.49 h.

Extended Orbital Architecture

Planet / star radius ratio

0.014001

Semi-major axis / stellar radius

2.830

Impact parameter (b)

0.183

Transit mid-time (BJD)

2,454,967.6227

Angular separation (arcsec)

0.05970

Eq. Temperature

1,158K

(885 °C)

Insolation (S⊕)

449.94

Earth = 1.00

Earth Similarity (ESI)

0.241

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-1189

Spectral Class

F-type yellow-white

Effective Temperature

6,012 K — hotter than the Sun (5,778 K)

Estimated Age

3.39 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.160 R☉

Stellar Mass

1.110 M☉

Metallicity [Fe/H]

0.08

Extended Stellar Properties

Surface gravity (log g)

4.360 dex

Stellar density

1.425 g/cm³

Metallicity ratio

[Fe/H]

Distance

782.85 parsec

Light-years 2,553.32 ly

V-band magnitude

14.46 mag

Voyager-speed travel 45,027,774 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.249 mas

Total Proper Motion

9.480 mas/yr

PM Right Ascension

7.00 mas/yr

PM Declination

6.40 mas/yr

Galactic Cartesian (pc)

x = 0.319 · y = -0.589 · z = 0.743

Equatorial (J2000)

RA 298.42641° · Dec 47.94682°

Galactic ℓ, b

81.952° · 10.288°

Ecliptic λ, β

322.448° · 66.286°

HTM-20 index

1143529484