Key parameters at a glance

A radius of 1.89 Earth radii
A mass of 4.23 Earth masses
Surface gravity around 1.18 g
An orbital period of 19.549 days
Semi-major axis 0.1307 AU
Equilibrium temperature 579 K (306 °C)
Distance from Earth 2,974.82 light-years
Earth Similarity Index 0.481
Travel time at Voyager 1 speed 52,460,947 years

Kepler-1986 b Planet Profile

Physical Specs

Radius

1.89 R⊕

Radius (Jupiter)

0.169 R♃

Mass

4.23 M⊕

Mass (Jupiter)

0.013 M♃

Density

3.44 g/cm³

Surface Gravity

1.18 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.481

HZ Position Inner

Controversial No

Discovery

Year 2023

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#143of 1176

top 12.1%

This planet

1.89R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-371 b 1.89 R⊕ K2-13 b 1.89 R⊕ Kepler-171 d 1.89 R⊕

Metric	Earth	Kepler-1986 b	Jupiter
Radius (R⊕)	1.00	1.89	11.21
Mass (M⊕)	1.00	4.23	317.83
Density (g/cm³)	5.51	3.44	1.33
Surface Gravity (g)	1.00	1.18	2.53
Insolation (S⊕)	1.00	26.62	0.037

Star Catalogue Identifiers

TIC

TIC 240184288

Gaia DR2

Gaia DR2 2125848733801094912

Gaia DR3

Gaia DR3 2125848733801094912

System

Kepler-1986

Percentile among Super-Earth cohort

Radius 1.890 R⊕ · percentile 87 / cohort 1176

Mass 4.230 M⊕ · percentile 80 / cohort 1176

Orbital period 19.55 d · percentile 84 / cohort 1164

Distance 912.09 pc · percentile 76 / cohort 1171

ESI 0.481 · percentile 71 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

19.549 days

Semi-major axis

0.1307 AU

Eccentricity

0.000

Inclination

89.05 °

Year Length

A year here lasts approximately 19.55 Earth days (5.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1307 AU.

Transit Fingerprint

Depth

0.052 %

Duration

1.780 h

Impact parameter b

0.830

Rp / R★

0.023621

Transit midpoint (BJD)

2,454,982.7888

Photometric dip

Transit produces a flux drop of 524 ppm lasting ≈ 1.78 h.

Extended Orbital Architecture

Planet / star radius ratio

0.023621

Semi-major axis / stellar radius

50.200

Impact parameter (b)

0.830

Transit mid-time (BJD)

2,454,982.7888

Angular separation (arcsec)

0.14300

Eq. Temperature

579K

(306 °C)

Insolation (S⊕)

26.62

Earth = 1.00

Earth Similarity (ESI)

0.481

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. 2023

Instrument

Kepler CCD Array

Publication

2023-05

Observation locale

Space

Discovery cohort

Planets confirmed in 2023 at Kepler (12 shown).

Kepler-1126 c · Super-Earth Kepler-2000 c · Super-Earth Kepler-1052 c · Sub-Neptune Kepler-311 d · Sub-Neptune Kepler-1996 c · Sub-Neptune Kepler-1162 c · Super-Earth Kepler-1996 b · Sub-Neptune Kepler-1610 c · Sub-Neptune Kepler-1801 c · Sub-Neptune Kepler-1995 b · Neptune-like Kepler-1992 b · Rocky Terrestrial Kepler-1491 c · Sub-Neptune

Host System: Kepler-1986

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,549 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.732 R☉

Stellar Mass

0.776 M☉

Metallicity [Fe/H]

-0.54

Extended Stellar Properties

Surface gravity (log g)

4.600 dex

Stellar density

6.280 g/cm³

Metallicity ratio

[Fe/H]

Distance

912.09 parsec

Light-years 2,974.82 ly

V-band magnitude

15.66 mag

Voyager-speed travel 52,460,947 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.069 mas

Total Proper Motion

8.925 mas/yr

PM Right Ascension

8.71 mas/yr

PM Declination

-1.93 mas/yr

Galactic Cartesian (pc)

x = 0.286 · y = -0.675 · z = 0.680

Equatorial (J2000)

RA 292.95827° · Dec 42.85489°

Galactic ℓ, b

75.544° · 11.288°

Ecliptic λ, β

309.344° · 63.192°

HTM-20 index

-38950047