Key parameters at a glance

A radius of 1.09 Earth radii
A mass of 1.32 Earth masses
Surface gravity around 1.11 g
An orbital period of 2.404 days
Semi-major axis 0.0360 AU
Equilibrium temperature 1,489 K (1216 °C)
Distance from Earth 2,033.94 light-years
Earth Similarity Index 0.204
Travel time at Voyager 1 speed 35,868,498 years

1 sibling around Kepler-115

Kepler-115 b 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-115 b this	Rocky Terrestrial	1.09	1.32	2.404	1,489	2014
Kepler-115 c	Sub-Neptune	2.60	7.27	8.991	960	2014

Kepler-115 b Planet Profile

Physical Specs

Radius

1.09 R⊕

Radius (Jupiter)

0.097 R♃

Mass

1.32 M⊕

Mass (Jupiter)

0.004 M♃

Density

5.60 g/cm³

Surface Gravity

1.11 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.204

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

#240of 570

top 41.9%

This planet

1.09R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

TOI-5720 b 1.09 R⊕ Kepler-1561 b 1.09 R⊕ Kepler-212 b 1.09 R⊕

Metric	Earth	Kepler-115 b	Jupiter
Radius (R⊕)	1.00	1.09	11.21
Mass (M⊕)	1.00	1.32	317.83
Density (g/cm³)	5.51	5.60	1.33
Surface Gravity (g)	1.00	1.11	2.53
Insolation (S⊕)	1.00	1,215.76	0.037

Star Catalogue Identifiers

TIC

TIC 273383120

Gaia DR2

Gaia DR2 2079368391569401600

Gaia DR3

Gaia DR3 2079368391569401600

System

Kepler-115

Percentile among Rocky Terrestrial cohort

Radius 1.090 R⊕ · percentile 56 / cohort 570

Mass 1.320 M⊕ · percentile 51 / cohort 570

Orbital period 2.40 d · percentile 28 / cohort 567

Distance 623.61 pc · percentile 75 / cohort 566

ESI 0.204 · percentile 15 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

2.404 days

Semi-major axis

0.0360 AU

Eccentricity

0.000

Inclination

80.55 °

Year Length

A year here lasts approximately 2.40 Earth days (0.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0360 AU.

Transit Fingerprint

Depth

0.007 %

Duration

1.306 h

Impact parameter b

0.430

Rp / R★

0.008435

Transit midpoint (BJD)

2,454,967.7285

Photometric dip

Transit produces a flux drop of 75 ppm lasting ≈ 1.31 h.

Extended Orbital Architecture

Planet / star radius ratio

0.008435

Semi-major axis / stellar radius

4.890

Impact parameter (b)

0.430

Transit mid-time (BJD)

2,454,967.7285

Angular separation (arcsec)

0.05770

Eq. Temperature

1,489K

(1216 °C)

Insolation (S⊕)

1,215.76

Earth = 1.00

Earth Similarity (ESI)

0.204

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

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-115

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,979 K — hotter than the Sun (5,778 K)

Estimated Age

4.17 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.205 R☉

Stellar Mass

1.042 M☉

Metallicity [Fe/H]

-0.05

Extended Stellar Properties

Surface gravity (log g)

4.306 dex

Stellar density

0.760 g/cm³

Metallicity ratio

[M/H]

Distance

623.61 parsec

Light-years 2,033.94 ly

V-band magnitude

13.55 mag

Voyager-speed travel 35,868,498 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.575 mas

Total Proper Motion

16.492 mas/yr

PM Right Ascension

10.73 mas/yr

PM Declination

12.52 mas/yr

Galactic Cartesian (pc)

x = 0.327 · y = -0.623 · z = 0.710

Equatorial (J2000)

RA 297.71193° · Dec 45.26199°

Galactic ℓ, b

79.333° · 9.400°

Ecliptic λ, β

318.538° · 64.104°

HTM-20 index

1095064193