Key parameters at a glance

A radius of 1.44 Earth radii
A mass of 2.67 Earth masses
Surface gravity around 1.29 g
An orbital period of 3.731 days
Semi-major axis 0.0473 AU
Equilibrium temperature 1,128 K (855 °C)
Distance from Earth 3,971.70 light-years
Earth Similarity Index 0.265
Travel time at Voyager 1 speed 70,040,916 years

Kepler-1149 b Planet Profile

Physical Specs

Radius

1.44 R⊕

Radius (Jupiter)

0.128 R♃

Mass

2.67 M⊕

Mass (Jupiter)

0.008 M♃

Density

4.91 g/cm³

Surface Gravity

1.29 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.265

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

#850of 1176

top 72.2%

This planet

1.44R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

TOI-237 b 1.44 R⊕ Kepler-1245 b 1.44 R⊕ Kepler-1007 b 1.44 R⊕

Metric	Earth	Kepler-1149 b	Jupiter
Radius (R⊕)	1.00	1.44	11.21
Mass (M⊕)	1.00	2.67	317.83
Density (g/cm³)	5.51	4.91	1.33
Surface Gravity (g)	1.00	1.29	2.53
Insolation (S⊕)	1.00	653.83	0.037

Star Catalogue Identifiers

TIC

TIC 270857274

Gaia DR2

Gaia DR2 2079920140245373184

Gaia DR3

Gaia DR3 2079920140245373184

System

Kepler-1149

Percentile among Super-Earth cohort

Radius 1.440 R⊕ · percentile 27 / cohort 1176

Mass 2.670 M⊕ · percentile 25 / cohort 1176

Orbital period 3.73 d · percentile 29 / cohort 1164

Distance 1,217.73 pc · percentile 90 / cohort 1171

ESI 0.265 · percentile 28 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

3.731 days

Semi-major axis

0.0473 AU

Eccentricity

0.000

Inclination

81.98 °

Year Length

A year here lasts approximately 3.73 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0473 AU.

Transit Fingerprint

Depth

0.019 %

Duration

2.807 h

Impact parameter b

0.909

Rp / R★

0.013317

Transit midpoint (BJD)

2,454,965.8947

Photometric dip

Transit produces a flux drop of 191 ppm lasting ≈ 2.81 h.

Extended Orbital Architecture

Planet / star radius ratio

0.013317

Semi-major axis / stellar radius

4.410

Impact parameter (b)

0.909

Transit mid-time (BJD)

2,454,965.8947

Angular separation (arcsec)

0.03880

Eq. Temperature

1,128K

(855 °C)

Insolation (S⊕)

653.83

Earth = 1.00

Earth Similarity (ESI)

0.265

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-1149

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,833 K — hotter than the Sun (5,778 K)

Estimated Age

3.98 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.010 R☉

Stellar Mass

1.020 M☉

Metallicity [Fe/H]

0.02

Extended Stellar Properties

Surface gravity (log g)

4.430 dex

Stellar density

1.082 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,217.73 parsec

Light-years 3,971.70 ly

V-band magnitude

15.15 mag

Voyager-speed travel 70,040,916 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.793 mas

Total Proper Motion

13.139 mas/yr

PM Right Ascension

-5.59 mas/yr

PM Declination

-11.89 mas/yr

Galactic Cartesian (pc)

x = 0.289 · y = -0.643 · z = 0.709

Equatorial (J2000)

RA 294.18918° · Dec 45.15153°

Galactic ℓ, b

78.042° · 11.536°

Ecliptic λ, β

313.150° · 65.008°

HTM-20 index

-1692191606