Key parameters at a glance

A radius of 1.16 Earth radii
A mass of 1.65 Earth masses
Surface gravity around 1.23 g
An orbital period of 6.828 days
Semi-major axis 0.0580 AU
Equilibrium temperature 577 K (304 °C)
Distance from Earth 1,255.50 light-years
Earth Similarity Index 0.548
Travel time at Voyager 1 speed 22,140,713 years
Almost certainly tidally locked to its host star given the close orbit

1 sibling around Kepler-316

Kepler-316 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
Kepler-316 b	Rocky Terrestrial	1.06	1.20	2.241	837	2014
Kepler-316 c this	Rocky Terrestrial	1.16	1.65	6.828	577	2014

Kepler-316 c Planet Profile

Physical Specs

Radius

1.16 R⊕

Radius (Jupiter)

0.103 R♃

Mass

1.65 M⊕

Mass (Jupiter)

0.005 M♃

Density

5.81 g/cm³

Surface Gravity

1.23 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.548

HZ Position Inner

Controversial No

Discovery

Year 2014

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#147of 570

top 25.6%

This planet

1.16R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

OGLE-2013-BLG-0341L B b 1.16 R⊕ Kepler-135 c 1.16 R⊕ Kepler-363 b 1.16 R⊕

Metric	Earth	Kepler-316 c	Jupiter
Radius (R⊕)	1.00	1.16	11.21
Mass (M⊕)	1.00	1.65	317.83
Density (g/cm³)	5.51	5.81	1.33
Surface Gravity (g)	1.00	1.23	2.53
Insolation (S⊕)	1.00	37.38	0.037

Star Catalogue Identifiers

TIC

TIC 159522175

Gaia DR2

Gaia DR2 2126214287057239680

Gaia DR3

Gaia DR3 2126214287057239680

System

Kepler-316

Percentile among Rocky Terrestrial cohort

Radius 1.160 R⊕ · percentile 73 / cohort 570

Mass 1.650 M⊕ · percentile 66 / cohort 570

Orbital period 6.83 d · percentile 66 / cohort 567

Distance 384.94 pc · percentile 50 / cohort 566

ESI 0.548 · percentile 74 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

6.828 days

Semi-major axis

0.0580 AU

Eccentricity

0.000

Inclination

89.09 °

Year Length

A year here lasts approximately 6.83 Earth days (1.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0580 AU.

Transit Fingerprint

Depth

0.055 %

Duration

2.419 h

Impact parameter b

0.180

Rp / R★

0.021440

Transit midpoint (BJD)

2,454,971.6140

Photometric dip

Transit produces a flux drop of 546 ppm lasting ≈ 2.42 h.

Extended Orbital Architecture

Planet / star radius ratio

0.021440

Semi-major axis / stellar radius

21.950

Impact parameter (b)

0.180

Transit mid-time (BJD)

2,454,971.6140

Angular separation (arcsec)

0.15100

Eq. Temperature

577K

(304 °C)

Insolation (S⊕)

37.38

Earth = 1.00

Earth Similarity (ESI)

0.548

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

Rowe et al. 2014

Instrument

Kepler CCD Array

Publication

2014-03

Observation locale

Space

Discovery cohort

Planets confirmed in 2014 at Kepler (12 shown).

Kepler-186 e · Super-Earth Kepler-395 c · Super-Earth Kepler-220 e · Super-Earth Kepler-249 d · Super-Earth Kepler-296 f · Super-Earth Kepler-367 c · Rocky Terrestrial Kepler-296 e · Super-Earth Kepler-155 c · Sub-Neptune Kepler-138 d · Super-Earth Kepler-333 c · Rocky Terrestrial Kepler-331 d · Super-Earth Kepler-267 d · Sub-Neptune

Host System: Kepler-316

Spectral Class

K-type orange

Effective Temperature

4,204 K — cooler than the Sun (5,778 K)

Estimated Age

3.31 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.520 R☉

Stellar Mass

0.587 M☉

Metallicity [Fe/H]

-0.23

Extended Stellar Properties

Surface gravity (log g)

4.743 dex

Stellar density

4.290 g/cm³

Metallicity ratio

[Fe/H]

Distance

384.94 parsec

Light-years 1,255.50 ly

V-band magnitude

15.81 mag

Voyager-speed travel 22,140,713 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

2.569 mas

Total Proper Motion

48.530 mas/yr

PM Right Ascension

-22.80 mas/yr

PM Declination

-42.84 mas/yr

Galactic Cartesian (pc)

x = 0.255 · y = -0.670 · z = 0.697

Equatorial (J2000)

RA 290.82584° · Dec 44.18390°

Galactic ℓ, b

76.076° · 13.259°

Ecliptic λ, β

307.047° · 64.967°

HTM-20 index

792727162