Key parameters at a glance

A radius of 1.99 Earth radii
A mass of 4.62 Earth masses
Surface gravity around 1.17 g
An orbital period of 17.146 days
Semi-major axis 0.1291 AU
Equilibrium temperature 811 K (538 °C)
Distance from Earth 3,720.04 light-years
Earth Similarity Index 0.339
Travel time at Voyager 1 speed 65,602,857 years

Kepler-1144 b Planet Profile

Physical Specs

Radius

1.99 R⊕

Radius (Jupiter)

0.178 R♃

Mass

4.62 M⊕

Mass (Jupiter)

0.015 M♃

Density

3.22 g/cm³

Surface Gravity

1.17 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.339

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

#4of 1176

top 0.3%

This planet

1.99R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

K2-62 c 1.99 R⊕ Kepler-136 c 1.99 R⊕ Kepler-243 c 1.99 R⊕

Metric	Earth	Kepler-1144 b	Jupiter
Radius (R⊕)	1.00	1.99	11.21
Mass (M⊕)	1.00	4.62	317.83
Density (g/cm³)	5.51	3.22	1.33
Surface Gravity (g)	1.00	1.17	2.53
Insolation (S⊕)	1.00	62.06	0.037

Star Catalogue Identifiers

TIC

TIC 159226202

Gaia DR2

Gaia DR2 2127863623217139328

Gaia DR3

Gaia DR3 2127863623217139328

System

Kepler-1144

Percentile among Super-Earth cohort

Radius 1.990 R⊕ · percentile 98 / cohort 1176

Mass 4.620 M⊕ · percentile 90 / cohort 1176

Orbital period 17.15 d · percentile 81 / cohort 1164

Distance 1,140.57 pc · percentile 88 / cohort 1171

ESI 0.339 · percentile 48 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

17.146 days

Semi-major axis

0.1291 AU

Eccentricity

0.000

Inclination

86.25 °

Year Length

A year here lasts approximately 17.15 Earth days (4.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1291 AU.

Transit Fingerprint

Depth

0.044 %

Duration

3.841 h

Impact parameter b

0.134

Rp / R★

0.019427

Transit midpoint (BJD)

2,454,973.6610

Photometric dip

Transit produces a flux drop of 440 ppm lasting ≈ 3.84 h.

Extended Orbital Architecture

Planet / star radius ratio

0.019427

Semi-major axis / stellar radius

34.470

Impact parameter (b)

0.134

Transit mid-time (BJD)

2,454,973.6610

Angular separation (arcsec)

0.11300

Eq. Temperature

811K

(538 °C)

Insolation (S⊕)

62.06

Earth = 1.00

Earth Similarity (ESI)

0.339

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-1144

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,753 K — cooler than the Sun (5,778 K)

Estimated Age

3.98 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.960 R☉

Stellar Mass

0.980 M☉

Metallicity [Fe/H]

-0.03

Extended Stellar Properties

Surface gravity (log g)

4.470 dex

Stellar density

2.636 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,140.57 parsec

Light-years 3,720.04 ly

V-band magnitude

14.94 mag

Voyager-speed travel 65,602,857 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.848 mas

Total Proper Motion

18.495 mas/yr

PM Right Ascension

1.85 mas/yr

PM Declination

-18.40 mas/yr

Galactic Cartesian (pc)

x = 0.233 · y = -0.638 · z = 0.734

Equatorial (J2000)

RA 290.04329° · Dec 47.25789°

Galactic ℓ, b

78.727° · 15.031°

Ecliptic λ, β

308.457° · 68.038°

HTM-20 index

-423982470