Key parameters at a glance

A radius of 0.77 Earth radii
A mass of 0.38 Earth masses
Surface gravity around 0.64 g
An orbital period of 3.823 days
Semi-major axis 0.0511 AU
Equilibrium temperature 1,282 K (1009 °C)
Distance from Earth 1,822.74 light-years
Earth Similarity Index 0.228
Travel time at Voyager 1 speed 32,144,002 years

Kepler-1982 b Planet Profile

Physical Specs

Radius

0.77 R⊕

Radius (Jupiter)

0.069 R♃

Mass

0.38 M⊕

Mass (Jupiter)

0.001 M♃

Density

4.59 g/cm³

Surface Gravity

0.64 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.228

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

#496of 570

top 86.8%

This planet

0.77R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-1629 b 0.77 R⊕ Kepler-431 b 0.76 R⊕ Kepler-1588 b 0.76 R⊕

Metric	Earth	Kepler-1982 b	Jupiter
Radius (R⊕)	1.00	0.77	11.21
Mass (M⊕)	1.00	0.38	317.83
Density (g/cm³)	5.51	4.59	1.33
Surface Gravity (g)	1.00	0.64	2.53
Insolation (S⊕)	1.00	638.38	0.037

Star Catalogue Identifiers

TIC

TIC 121215807

Gaia DR2

Gaia DR2 2100524610190045312

Gaia DR3

Gaia DR3 2100524610190045312

System

Kepler-1982

Percentile among Rocky Terrestrial cohort

Radius 0.770 R⊕ · percentile 13 / cohort 570

Mass 0.381 M⊕ · percentile 11 / cohort 570

Orbital period 3.82 d · percentile 41 / cohort 567

Distance 558.86 pc · percentile 69 / cohort 566

ESI 0.228 · percentile 19 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

3.823 days

Semi-major axis

0.0511 AU

Eccentricity

0.000

Inclination

89.70 °

Year Length

A year here lasts approximately 3.82 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0511 AU.

Transit Fingerprint

Depth

0.005 %

Duration

2.388 h

Impact parameter b

0.064

Rp / R★

0.006294

Transit midpoint (BJD)

2,454,966.0694

Photometric dip

Transit produces a flux drop of 47 ppm lasting ≈ 2.39 h.

Extended Orbital Architecture

Planet / star radius ratio

0.006294

Semi-major axis / stellar radius

12.300

Impact parameter (b)

0.064

Transit mid-time (BJD)

2,454,966.0694

Angular separation (arcsec)

0.09140

Eq. Temperature

1,282K

(1009 °C)

Insolation (S⊕)

638.38

Earth = 1.00

Earth Similarity (ESI)

0.228

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

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-1986 b · Super-Earth

Host System: Kepler-1982

Spectral Class

F-type yellow-white

Effective Temperature

6,202 K — hotter than the Sun (5,778 K)

Estimated Age

2.63 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.122 R☉

Stellar Mass

1.213 M☉

Metallicity [Fe/H]

0.21

Extended Stellar Properties

Surface gravity (log g)

4.422 dex

Stellar density

2.407 g/cm³

Metallicity ratio

[Fe/H]

Distance

558.86 parsec

Light-years 1,822.74 ly

V-band magnitude

12.70 mag

Voyager-speed travel 32,144,002 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

1.761 mas

Total Proper Motion

18.174 mas/yr

PM Right Ascension

-11.46 mas/yr

PM Declination

-14.10 mas/yr

Galactic Cartesian (pc)

x = 0.230 · y = -0.735 · z = 0.638

Equatorial (J2000)

RA 287.40999° · Dec 39.65863°

Galactic ℓ, b

70.758° · 13.689°

Ecliptic λ, β

298.732° · 61.372°

HTM-20 index

-573555759