Key parameters at a glance

A radius of 0.92 Earth radii
A mass of 0.72 Earth masses
Surface gravity around 0.85 g
An orbital period of 7.097 days
Semi-major axis 0.0533 AU
Equilibrium temperature 425 K (152 °C)
Distance from Earth 923.53 light-years
Earth Similarity Index 0.722
Travel time at Voyager 1 speed 16,286,398 years
Almost certainly tidally locked to its host star given the close orbit

Kepler-779 b Planet Profile

Physical Specs

Radius

0.92 R⊕

Radius (Jupiter)

0.082 R♃

Mass

0.72 M⊕

Mass (Jupiter)

0.002 M♃

Density

5.09 g/cm³

Surface Gravity

0.85 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.722

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

#396of 570

top 69.3%

This planet

0.92R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

TRAPPIST-1 e 0.92 R⊕ Kepler-1365 b 0.92 R⊕ Kepler-1338 b 0.92 R⊕

Metric	Earth	Kepler-779 b	Jupiter
Radius (R⊕)	1.00	0.92	11.21
Mass (M⊕)	1.00	0.72	317.83
Density (g/cm³)	5.51	5.09	1.33
Surface Gravity (g)	1.00	0.85	2.53
Insolation (S⊕)	1.00	15.03	0.037

Star Catalogue Identifiers

TIC

TIC 352012126

Gaia DR2

Gaia DR2 2105915343901864832

Gaia DR3

Gaia DR3 2105915343901864832

System

Kepler-779

Percentile among Rocky Terrestrial cohort

Radius 0.920 R⊕ · percentile 29 / cohort 570

Mass 0.721 M⊕ · percentile 26 / cohort 570

Orbital period 7.10 d · percentile 68 / cohort 567

Distance 283.16 pc · percentile 39 / cohort 566

ESI 0.722 · percentile 83 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

7.097 days

Semi-major axis

0.0533 AU

Eccentricity

0.000

Inclination

89.89 °

Year Length

A year here lasts approximately 7.10 Earth days (1.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0533 AU.

Transit Fingerprint

Depth

0.037 %

Duration

2.244 h

Impact parameter b

0.050

Rp / R★

0.018899

Transit midpoint (BJD)

2,454,969.3434

Photometric dip

Transit produces a flux drop of 370 ppm lasting ≈ 2.24 h.

Extended Orbital Architecture

Planet / star radius ratio

0.018899

Semi-major axis / stellar radius

26.170

Impact parameter (b)

0.050

Transit mid-time (BJD)

2,454,969.3434

Angular separation (arcsec)

0.18800

Eq. Temperature

425K

(152 °C)

Insolation (S⊕)

15.03

Earth = 1.00

Earth Similarity (ESI)

0.722

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.

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-779

Spectral Class

K-type orange

Effective Temperature

3,804 K — cooler than the Sun (5,778 K)

Estimated Age

3.89 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.440 R☉

Stellar Mass

0.460 M☉

Metallicity [Fe/H]

-0.43

Extended Stellar Properties

Surface gravity (log g)

4.810 dex

Stellar density

4.629 g/cm³

Metallicity ratio

[Fe/H]

Distance

283.16 parsec

Light-years 923.53 ly

V-band magnitude

16.30 mag

Voyager-speed travel 16,286,398 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

3.503 mas

Total Proper Motion

24.896 mas/yr

PM Right Ascension

-4.54 mas/yr

PM Declination

-24.48 mas/yr

Galactic Cartesian (pc)

x = 0.193 · y = -0.689 · z = 0.699

Equatorial (J2000)

RA 285.62852° · Dec 44.31079°

Galactic ℓ, b

74.662° · 16.724°

Ecliptic λ, β

298.541° · 66.208°

HTM-20 index

120940285