Key parameters at a glance

A radius of 0.64 Earth radii
A mass of 0.20 Earth masses
Surface gravity around 0.49 g
An orbital period of 4.272 days
Semi-major axis 0.0507 AU
Equilibrium temperature 981 K (708 °C)
Distance from Earth 813.25 light-years
Earth Similarity Index 0.291
Travel time at Voyager 1 speed 14,341,613 years

2 siblings around Kepler-1130

Kepler-1130 d shares its host star with 2 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
Kepler-1130 c	Rocky Terrestrial	0.79	0.42	3.267	1,072	2021
Kepler-1130 d this	Rocky Terrestrial	0.64	0.20	4.272	981	2021
Kepler-1130 b	Rocky Terrestrial	0.80	0.44	5.453	904	2016

Kepler-1130 d Planet Profile

Physical Specs

Radius

0.64 R⊕

Radius (Jupiter)

0.058 R♃

Mass

0.20 M⊕

Mass (Jupiter)

0.001 M♃

Density

4.14 g/cm³

Surface Gravity

0.49 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.291

HZ Position Inner

Controversial No

Discovery

Year 2021

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#541of 570

top 94.7%

This planet

0.64R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

K2-137 b 0.64 R⊕ Kepler-1371 c 0.64 R⊕ Kepler-138 b 0.64 R⊕

Metric	Earth	Kepler-1130 d	Jupiter
Radius (R⊕)	1.00	0.64	11.21
Mass (M⊕)	1.00	0.20	317.83
Density (g/cm³)	5.51	4.14	1.33
Surface Gravity (g)	1.00	0.49	2.53
Insolation (S⊕)	1.00	221.40	0.037

Star Catalogue Identifiers

TIC

TIC 164882482

Gaia DR2

Gaia DR2 2106406069684947840

Gaia DR3

Gaia DR3 2106406069684947840

System

Kepler-1130

Percentile among Rocky Terrestrial cohort

Radius 0.645 R⊕ · percentile 5 / cohort 570

Mass 0.202 M⊕ · percentile 4 / cohort 570

Orbital period 4.27 d · percentile 47 / cohort 567

Distance 249.34 pc · percentile 34 / cohort 566

ESI 0.291 · percentile 36 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

4.272 days

Semi-major axis

0.0507 AU

Eccentricity

0.000

Inclination

85.95 °

Year Length

A year here lasts approximately 4.27 Earth days (1.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0507 AU.

Transit Fingerprint

Depth

0.005 %

Duration

2.143 h

Impact parameter b

0.767

Rp / R★

0.006784

Transit midpoint (BJD)

2,454,966.2210

Photometric dip

Transit produces a flux drop of 52 ppm lasting ≈ 2.14 h.

Extended Orbital Architecture

Planet / star radius ratio

0.006784

Semi-major axis / stellar radius

9.500

Impact parameter (b)

0.767

Transit mid-time (BJD)

2,454,966.2210

Angular separation (arcsec)

0.20300

Eq. Temperature

981K

(708 °C)

Insolation (S⊕)

221.40

Earth = 1.00

Earth Similarity (ESI)

0.291

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

Valizadegan et al. 2022

Instrument

Kepler CCD Array

Publication

2022-02

Observation locale

Space

Discovery cohort

Planets confirmed in 2021 at Kepler (12 shown).

Kepler-1816 b · Super-Earth Kepler-1705 c · Sub-Neptune Kepler-1948 b · Rocky Terrestrial Kepler-196 d · Sub-Neptune Kepler-1853 b · Super-Earth Kepler-1840 b · Sub-Neptune Kepler-1881 b · Sub-Neptune Kepler-1858 b · Sub-Neptune Kepler-1874 b · Sub-Neptune Kepler-1802 c · Sub-Neptune Kepler-1749 b · Super-Earth Kepler-1849 b · Sub-Neptune

Host System: Kepler-1130

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,450 K — cooler than the Sun (5,778 K)

Estimated Age

1.58 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.842 R☉

Stellar Mass

0.944 M☉

Metallicity [Fe/H]

0.10

Extended Stellar Properties

Surface gravity (log g)

4.563 dex

Stellar density

1.209 g/cm³

Systemic radial velocity

7.46 km/s

Metallicity ratio

[Fe/H]

Distance

249.34 parsec

Light-years 813.25 ly

V-band magnitude

12.51 mag

Voyager-speed travel 14,341,613 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

3.982 mas

Total Proper Motion

4.587 mas/yr

PM Right Ascension

-4.57 mas/yr

PM Declination

-0.34 mas/yr

Galactic Cartesian (pc)

x = 0.184 · y = -0.678 · z = 0.712

Equatorial (J2000)

RA 285.20742° · Dec 45.38433°

Galactic ℓ, b

75.591° · 17.396°

Ecliptic λ, β

298.542° · 67.323°

HTM-20 index

-1530422084