Key parameters at a glance

A radius of 2.89 Earth radii
A mass of 8.70 Earth masses
Surface gravity around 1.04 g
An orbital period of 14.833 days
Semi-major axis 0.1134 AU
Equilibrium temperature 694 K (421 °C)
Distance from Earth 3,782.92 light-years
Earth Similarity Index 0.345
Travel time at Voyager 1 speed 66,711,797 years

Kepler-1682 b Planet Profile

Physical Specs

Radius

2.89 R⊕

Radius (Jupiter)

0.258 R♃

Mass

8.70 M⊕

Mass (Jupiter)

0.027 M♃

Density

1.98 g/cm³

Surface Gravity

1.04 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.345

HZ Position Inner

Controversial No

Discovery

Year 2020

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#647of 1978

top 32.7%

This planet

2.89R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-689 b 2.89 R⊕ Kepler-53 b 2.89 R⊕ Kepler-781 b 2.89 R⊕

Metric	Earth	Kepler-1682 b	Jupiter
Radius (R⊕)	1.00	2.89	11.21
Mass (M⊕)	1.00	8.70	317.83
Density (g/cm³)	5.51	1.98	1.33
Surface Gravity (g)	1.00	1.04	2.53
Insolation (S⊕)	1.00	54.74	0.037

Star Catalogue Identifiers

TIC

TIC 138477499

Gaia DR2

Gaia DR2 2052482617853346944

Gaia DR3

Gaia DR3 2052482617853346944

System

Kepler-1682

Percentile among Sub-Neptune cohort

Radius 2.889 R⊕ · percentile 67 / cohort 1978

Mass 8.700 M⊕ · percentile 61 / cohort 1978

Orbital period 14.83 d · percentile 50 / cohort 1946

Distance 1,159.85 pc · percentile 85 / cohort 1975

ESI 0.345 · percentile 39 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

14.833 days

Semi-major axis

0.1134 AU

Eccentricity

0.000

Inclination

89.16 °

Year Length

A year here lasts approximately 14.83 Earth days (4.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1134 AU.

Transit Fingerprint

Depth

0.096 %

Duration

4.436 h

Impact parameter b

0.120

Rp / R★

0.025764

Transit midpoint (BJD)

2,454,968.4434

Photometric dip

Transit produces a flux drop of 965 ppm lasting ≈ 4.44 h.

Extended Orbital Architecture

Planet / star radius ratio

0.025764

Semi-major axis / stellar radius

13.260

Impact parameter (b)

0.120

Transit mid-time (BJD)

2,454,968.4434

Angular separation (arcsec)

0.09780

Eq. Temperature

694K

(421 °C)

Insolation (S⊕)

54.74

Earth = 1.00

Earth Similarity (ESI)

0.345

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

Armstrong et al. 2021

Instrument

Kepler CCD Array

Publication

2021-07

Observation locale

Space

Discovery cohort

Planets confirmed in 2020 at Kepler (12 shown).

Kepler-1649 c · Rocky Terrestrial Kepler-1701 b · Sub-Neptune Kepler-1690 b · Sub-Neptune Kepler-1700 b · Sub-Neptune Kepler-1684 b · Sub-Neptune Kepler-1678 b · Sub-Neptune Kepler-598 c · Sub-Neptune Kepler-1661 b · Sub-Neptune Kepler-1663 b · Sub-Neptune Kepler-1681 b · Sub-Neptune Kepler-1672 b · Sub-Neptune Kepler-1702 b · Super-Earth

Host System: Kepler-1682

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,619 K — cooler than the Sun (5,778 K)

Estimated Age

5.70 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.842 R☉

Stellar Mass

0.990 M☉

Metallicity [Fe/H]

-0.05

Extended Stellar Properties

Surface gravity (log g)

4.583 dex

Stellar density

2.336 g/cm³

Metallicity ratio

[M/H]

Distance

1,159.85 parsec

Light-years 3,782.92 ly

V-band magnitude

15.91 mag

Voyager-speed travel 66,711,797 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.835 mas

Total Proper Motion

6.456 mas/yr

PM Right Ascension

-0.13 mas/yr

PM Declination

-6.45 mas/yr

Galactic Cartesian (pc)

x = 0.313 · y = -0.704 · z = 0.637

Equatorial (J2000)

RA 293.98358° · Dec 39.57285°

Galactic ℓ, b

72.939° · 9.098°

Ecliptic λ, β

308.578° · 59.841°

HTM-20 index

1174333026