Key parameters at a glance

A radius of 2.63 Earth radii
A mass of 7.41 Earth masses
Surface gravity around 1.07 g
An orbital period of 18.684 days
Semi-major axis 0.1439 AU
Equilibrium temperature 832 K (559 °C)
Distance from Earth 3,238.25 light-years
Earth Similarity Index 0.298
Travel time at Voyager 1 speed 57,106,472 years

Kepler-525 b Planet Profile

Physical Specs

Radius

2.63 R⊕

Radius (Jupiter)

0.235 R♃

Mass

7.41 M⊕

Mass (Jupiter)

0.023 M♃

Density

2.24 g/cm³

Surface Gravity

1.07 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.298

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

#969of 1978

top 48.9%

This planet

2.63R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1241 b 2.63 R⊕ GJ 3473 c 2.63 R⊕ Kepler-319 c 2.63 R⊕

Metric	Earth	Kepler-525 b	Jupiter
Radius (R⊕)	1.00	2.63	11.21
Mass (M⊕)	1.00	7.41	317.83
Density (g/cm³)	5.51	2.24	1.33
Surface Gravity (g)	1.00	1.07	2.53
Insolation (S⊕)	1.00	176.23	0.037

Star Catalogue Identifiers

TIC

TIC 272279290

Gaia DR2

Gaia DR2 2080580328258222208

Gaia DR3

Gaia DR3 2080580328258222208

System

Kepler-525

Percentile among Sub-Neptune cohort

Radius 2.630 R⊕ · percentile 50 / cohort 1978

Mass 7.410 M⊕ · percentile 46 / cohort 1978

Orbital period 18.68 d · percentile 59 / cohort 1946

Distance 992.85 pc · percentile 78 / cohort 1975

ESI 0.298 · percentile 27 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

18.684 days

Semi-major axis

0.1439 AU

Eccentricity

0.000

Inclination

85.70 °

Year Length

A year here lasts approximately 18.68 Earth days (5.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1439 AU.

Transit Fingerprint

Depth

0.038 %

Duration

6.907 h

Impact parameter b

0.878

Rp / R★

0.020940

Transit midpoint (BJD)

2,455,003.8322

Photometric dip

Transit produces a flux drop of 382 ppm lasting ≈ 6.91 h.

Extended Orbital Architecture

Planet / star radius ratio

0.020940

Semi-major axis / stellar radius

10.300

Impact parameter (b)

0.878

Transit mid-time (BJD)

2,455,003.8322

Angular separation (arcsec)

0.14500

Eq. Temperature

832K

(559 °C)

Insolation (S⊕)

176.23

Earth = 1.00

Earth Similarity (ESI)

0.298

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-525

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,573 K — cooler than the Sun (5,778 K)

Estimated Age

10.47 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.150 R☉

Stellar Mass

0.950 M☉

Metallicity [Fe/H]

0.11

Extended Stellar Properties

Surface gravity (log g)

4.290 dex

Stellar density

0.150 g/cm³

Metallicity ratio

[Fe/H]

Distance

992.85 parsec

Light-years 3,238.25 ly

V-band magnitude

13.61 mag

Voyager-speed travel 57,106,472 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.978 mas

Total Proper Motion

1.716 mas/yr

PM Right Ascension

-1.09 mas/yr

PM Declination

1.33 mas/yr

Galactic Cartesian (pc)

x = 0.299 · y = -0.608 · z = 0.736

Equatorial (J2000)

RA 296.18342° · Dec 47.35878°

Galactic ℓ, b

80.689° · 11.332°

Ecliptic λ, β

318.423° · 66.451°

HTM-20 index

-2070093700