Key parameters at a glance

A radius of 3.03 Earth radii
A mass of 9.44 Earth masses
Surface gravity around 1.03 g
An orbital period of 16.344 days
Semi-major axis 0.1264 AU
Equilibrium temperature 730 K (457 °C)
Distance from Earth 2,963.13 light-years
Earth Similarity Index 0.322
Travel time at Voyager 1 speed 52,254,804 years

Kepler-1779 b Planet Profile

Physical Specs

Radius

3.03 R⊕

Radius (Jupiter)

0.271 R♃

Mass

9.44 M⊕

Mass (Jupiter)

0.030 M♃

Density

1.86 g/cm³

Surface Gravity

1.03 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.322

HZ Position Inner

Controversial No

Discovery

Year 2021

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#490of 1978

top 24.7%

This planet

3.03R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1664 b 3.03 R⊕ Kepler-498 b 3.03 R⊕ Kepler-162 c 3.03 R⊕

Metric	Earth	Kepler-1779 b	Jupiter
Radius (R⊕)	1.00	3.03	11.21
Mass (M⊕)	1.00	9.44	317.83
Density (g/cm³)	5.51	1.86	1.33
Surface Gravity (g)	1.00	1.03	2.53
Insolation (S⊕)	1.00	67.34	0.037

Star Catalogue Identifiers

TIC

TIC 239309962

Gaia DR2

Gaia DR2 2082208254002842240

Gaia DR3

Gaia DR3 2082208254002842240

System

Kepler-1779

Percentile among Sub-Neptune cohort

Radius 3.033 R⊕ · percentile 75 / cohort 1978

Mass 9.440 M⊕ · percentile 69 / cohort 1978

Orbital period 16.34 d · percentile 55 / cohort 1946

Distance 908.50 pc · percentile 73 / cohort 1975

ESI 0.322 · percentile 33 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

16.344 days

Semi-major axis

0.1264 AU

Eccentricity

0.000

Inclination

87.56 °

Year Length

A year here lasts approximately 16.34 Earth days (4.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1264 AU.

Transit Fingerprint

Depth

0.089 %

Duration

5.307 h

Impact parameter b

0.030

Rp / R★

0.025700

Transit midpoint (BJD)

2,454,978.0398

Photometric dip

Transit produces a flux drop of 893 ppm lasting ≈ 5.31 h.

Extended Orbital Architecture

Planet / star radius ratio

0.025700

Semi-major axis / stellar radius

24.000

Impact parameter (b)

0.030

Transit mid-time (BJD)

2,454,978.0398

Angular separation (arcsec)

0.13900

Eq. Temperature

730K

(457 °C)

Insolation (S⊕)

67.34

Earth = 1.00

Earth Similarity (ESI)

0.322

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. 2022

Instrument

Kepler CCD Array

Publication

2022-02

Observation locale

Space

Discovery cohort

Planets confirmed in 2021 at Kepler (12 shown).

Kepler-1816 b · Super-Earth Kepler-1705 c · Sub-Neptune Kepler-1948 b · Rocky Terrestrial Kepler-196 d · Sub-Neptune Kepler-1853 b · Super-Earth Kepler-1840 b · Sub-Neptune Kepler-1881 b · Sub-Neptune Kepler-1858 b · Sub-Neptune Kepler-1874 b · Sub-Neptune Kepler-1802 c · Sub-Neptune Kepler-1749 b · Super-Earth Kepler-1849 b · Sub-Neptune

Host System: Kepler-1779

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,730 K — cooler than the Sun (5,778 K)

Estimated Age

0.60 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.056 R☉

Stellar Mass

1.008 M☉

Metallicity [Fe/H]

0.16

Extended Stellar Properties

Surface gravity (log g)

4.394 dex

Stellar density

0.339 g/cm³

Metallicity ratio

[Fe/H]

Distance

908.50 parsec

Light-years 2,963.13 ly

V-band magnitude

15.13 mag

Voyager-speed travel 52,254,804 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.073 mas

Total Proper Motion

6.685 mas/yr

PM Right Ascension

-1.46 mas/yr

PM Declination

-6.52 mas/yr

Galactic Cartesian (pc)

x = 0.354 · y = -0.603 · z = 0.715

Equatorial (J2000)

RA 300.41746° · Dec 45.60549°

Galactic ℓ, b

80.598° · 7.931°

Ecliptic λ, β

322.751° · 63.580°

HTM-20 index

-1132260358