Key parameters at a glance

A radius of 2.07 Earth radii
A mass of 4.93 Earth masses
Surface gravity around 1.15 g
An orbital period of 9.754 days
Semi-major axis 0.0892 AU
Equilibrium temperature 813 K (540 °C)
Distance from Earth 2,965.67 light-years
Earth Similarity Index 0.334
Travel time at Voyager 1 speed 52,299,610 years

Kepler-1679 b Planet Profile

Physical Specs

Radius

2.07 R⊕

Radius (Jupiter)

0.185 R♃

Mass

4.93 M⊕

Mass (Jupiter)

0.016 M♃

Density

3.06 g/cm³

Surface Gravity

1.15 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.334

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

#1870of 1978

top 94.5%

This planet

2.07R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-988 b 2.07 R⊕ TOI-262 b 2.07 R⊕ Kepler-654 b 2.07 R⊕

Metric	Earth	Kepler-1679 b	Jupiter
Radius (R⊕)	1.00	2.07	11.21
Mass (M⊕)	1.00	4.93	317.83
Density (g/cm³)	5.51	3.06	1.33
Surface Gravity (g)	1.00	1.15	2.53
Insolation (S⊕)	1.00	103.30	0.037

Star Catalogue Identifiers

TIC

TIC 27006340

Gaia DR2

Gaia DR2 2135221108353855744

Gaia DR3

Gaia DR3 2135221108353855744

System

Kepler-1679

Percentile among Sub-Neptune cohort

Radius 2.069 R⊕ · percentile 5 / cohort 1978

Mass 4.930 M⊕ · percentile 7 / cohort 1978

Orbital period 9.75 d · percentile 33 / cohort 1946

Distance 909.28 pc · percentile 73 / cohort 1975

ESI 0.334 · percentile 36 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

9.754 days

Semi-major axis

0.0892 AU

Eccentricity

0.000

Inclination

89.45 °

Year Length

A year here lasts approximately 9.75 Earth days (2.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0892 AU.

Transit Fingerprint

Depth

0.043 %

Duration

2.331 h

Impact parameter b

0.295

Rp / R★

0.019066

Transit midpoint (BJD)

2,454,967.0626

Photometric dip

Transit produces a flux drop of 431 ppm lasting ≈ 2.33 h.

Extended Orbital Architecture

Planet / star radius ratio

0.019066

Semi-major axis / stellar radius

30.960

Impact parameter (b)

0.295

Transit mid-time (BJD)

2,454,967.0626

Angular separation (arcsec)

0.09810

Eq. Temperature

813K

(540 °C)

Insolation (S⊕)

103.30

Earth = 1.00

Earth Similarity (ESI)

0.334

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-1679

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,501 K — cooler than the Sun (5,778 K)

Estimated Age

0.40 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.873 R☉

Stellar Mass

0.960 M☉

Metallicity [Fe/H]

-0.04

Extended Stellar Properties

Surface gravity (log g)

4.538 dex

Stellar density

2.033 g/cm³

Metallicity ratio

[Fe/H]

Distance

909.28 parsec

Light-years 2,965.67 ly

V-band magnitude

15.33 mag

Voyager-speed travel 52,299,610 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.072 mas

Total Proper Motion

3.971 mas/yr

PM Right Ascension

-0.62 mas/yr

PM Declination

3.92 mas/yr

Galactic Cartesian (pc)

x = 0.258 · y = -0.582 · z = 0.771

Equatorial (J2000)

RA 293.90058° · Dec 50.42705°

Galactic ℓ, b

82.798° · 14.057°

Ecliptic λ, β

318.570° · 69.865°

HTM-20 index

528426485