Key parameters at a glance

A radius of 2.00 Earth radii
A mass of 4.66 Earth masses
Surface gravity around 1.17 g
An orbital period of 9.669 days
Semi-major axis 0.0854 AU
Equilibrium temperature 730 K (457 °C)
Distance from Earth 1,731.12 light-years
Earth Similarity Index 0.377
Travel time at Voyager 1 speed 30,528,333 years

Kepler-579 b Planet Profile

Physical Specs

Radius

2.00 R⊕

Radius (Jupiter)

0.178 R♃

Mass

4.66 M⊕

Mass (Jupiter)

0.015 M♃

Density

3.20 g/cm³

Surface Gravity

1.17 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.377

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

#1955of 1978

top 98.8%

This planet

2.00R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-32 c 2.00 R⊕ Kepler-238 f 2.00 R⊕ Kepler-242 c 2.00 R⊕

Metric	Earth	Kepler-579 b	Jupiter
Radius (R⊕)	1.00	2.00	11.21
Mass (M⊕)	1.00	4.66	317.83
Density (g/cm³)	5.51	3.20	1.33
Surface Gravity (g)	1.00	1.17	2.53
Insolation (S⊕)	1.00	60.61	0.037

Star Catalogue Identifiers

TIC

TIC 138959504

Gaia DR2

Gaia DR2 2076477053946253952

Gaia DR3

Gaia DR3 2076477053946253952

System

Kepler-579

Percentile among Sub-Neptune cohort

Radius 2.000 R⊕ · percentile 0 / cohort 1978

Mass 4.660 M⊕ · percentile 2 / cohort 1978

Orbital period 9.67 d · percentile 32 / cohort 1946

Distance 530.77 pc · percentile 49 / cohort 1975

ESI 0.377 · percentile 47 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

9.669 days

Semi-major axis

0.0854 AU

Eccentricity

0.000

Inclination

87.59 °

Year Length

A year here lasts approximately 9.67 Earth days (2.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0854 AU.

Transit Fingerprint

Depth

0.041 %

Duration

2.371 h

Impact parameter b

0.208

Rp / R★

0.018662

Transit midpoint (BJD)

2,455,007.5348

Photometric dip

Transit produces a flux drop of 412 ppm lasting ≈ 2.37 h.

Extended Orbital Architecture

Planet / star radius ratio

0.018662

Semi-major axis / stellar radius

31.070

Impact parameter (b)

0.208

Transit mid-time (BJD)

2,455,007.5348

Angular separation (arcsec)

0.16100

Eq. Temperature

730K

(457 °C)

Insolation (S⊕)

60.61

Earth = 1.00

Earth Similarity (ESI)

0.377

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-579

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,636 K — cooler than the Sun (5,778 K)

Estimated Age

4.07 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.960 R☉

Stellar Mass

0.990 M☉

Metallicity [Fe/H]

0.13

Extended Stellar Properties

Surface gravity (log g)

4.470 dex

Stellar density

6.072 g/cm³

Metallicity ratio

[Fe/H]

Distance

530.77 parsec

Light-years 1,731.12 ly

V-band magnitude

14.55 mag

Voyager-speed travel 30,528,333 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

1.855 mas

Total Proper Motion

16.090 mas/yr

PM Right Ascension

9.38 mas/yr

PM Declination

-13.08 mas/yr

Galactic Cartesian (pc)

x = 0.324 · y = -0.695 · z = 0.642

Equatorial (J2000)

RA 295.00208° · Dec 39.95286°

Galactic ℓ, b

73.651° · 8.587°

Ecliptic λ, β

310.301° · 59.942°

HTM-20 index

-1274317286