Key parameters at a glance

A radius of 4.76 Earth radii
A mass of 20.30 Earth masses
Surface gravity around 0.90 g
An orbital period of 120.018 days
Semi-major axis 0.5326 AU
Equilibrium temperature 473 K (200 °C)
Distance from Earth 3,638.66 light-years
Earth Similarity Index 0.397
Travel time at Voyager 1 speed 64,167,793 years

Kepler-1000 b Planet Profile

Physical Specs

Radius

4.76 R⊕

Radius (Jupiter)

0.425 R♃

Mass

20.30 M⊕

Mass (Jupiter)

0.064 M♃

Density

1.03 g/cm³

Surface Gravity

0.90 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.397

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

#419of 574

top 72.8%

This planet

4.76R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

HD 153557 b 4.77 R⊕ Kepler-502 b 4.77 R⊕ Kepler-637 b 4.75 R⊕

Metric	Earth	Kepler-1000 b	Jupiter
Radius (R⊕)	1.00	4.76	11.21
Mass (M⊕)	1.00	20.30	317.83
Density (g/cm³)	5.51	1.03	1.33
Surface Gravity (g)	1.00	0.90	2.53
Insolation (S⊕)	1.00	18.00	0.037

Star Catalogue Identifiers

TIC

TIC 158322296

Gaia DR2

Gaia DR2 2130652843697474816

Gaia DR3

Gaia DR3 2130652843697474816

System

Kepler-1000

Percentile among Neptune-like cohort

Radius 4.760 R⊕ · percentile 27 / cohort 574

Mass 20.300 M⊕ · percentile 30 / cohort 574

Orbital period 120.02 d · percentile 83 / cohort 524

Distance 1,115.62 pc · percentile 77 / cohort 572

ESI 0.397 · percentile 73 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

120.018 days

Semi-major axis

0.5326 AU

Eccentricity

0.000

Inclination

89.50 °

Year Length

A year here lasts approximately 120.02 Earth days (32.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.5326 AU.

Transit Fingerprint

Depth

0.088 %

Duration

11.604 h

Impact parameter b

0.489

Rp / R★

0.028820

Transit midpoint (BJD)

2,454,967.1893

Photometric dip

Transit produces a flux drop of 883 ppm lasting ≈ 11.60 h.

Extended Orbital Architecture

Planet / star radius ratio

0.028820

Semi-major axis / stellar radius

71.800

Impact parameter (b)

0.489

Transit mid-time (BJD)

2,454,967.1893

Angular separation (arcsec)

0.47700

Eq. Temperature

473K

(200 °C)

Insolation (S⊕)

18.00

Earth = 1.00

Earth Similarity (ESI)

0.397

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-1000

Spectral Class

F-type yellow-white

Effective Temperature

6,453 K — hotter than the Sun (5,778 K)

Estimated Age

1.26 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.510 R☉

Stellar Mass

1.400 M☉

Metallicity [Fe/H]

0.35

Extended Stellar Properties

Surface gravity (log g)

4.230 dex

Stellar density

0.250 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,115.62 parsec

Light-years 3,638.66 ly

V-band magnitude

13.23 mag

Voyager-speed travel 64,167,793 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.867 mas

Total Proper Motion

6.467 mas/yr

PM Right Ascension

-4.27 mas/yr

PM Declination

-4.86 mas/yr

Galactic Cartesian (pc)

x = 0.195 · y = -0.652 · z = 0.733

Equatorial (J2000)

RA 286.68547° · Dec 47.09819°

Galactic ℓ, b

77.653° · 17.073°

Ecliptic λ, β

302.488° · 68.663°

HTM-20 index

-1745355506