Key parameters at a glance

A radius of 0.91 Earth radii
A mass of 0.69 Earth masses
Surface gravity around 0.84 g
An orbital period of 2.417 days
Semi-major axis 0.0356 AU
Equilibrium temperature 1,343 K (1070 °C)
Distance from Earth 1,249.14 light-years
Earth Similarity Index 0.227
Travel time at Voyager 1 speed 22,028,611 years

Kepler-1525 b Planet Profile

Physical Specs

Radius

0.91 R⊕

Radius (Jupiter)

0.081 R♃

Mass

0.69 M⊕

Mass (Jupiter)

0.002 M♃

Density

5.05 g/cm³

Surface Gravity

0.84 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.227

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

#406of 570

top 71.1%

This planet

0.91R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

HD 224018 b 0.91 R⊕ Kepler-197 e 0.91 R⊕ Kepler-1992 b 0.91 R⊕

Metric	Earth	Kepler-1525 b	Jupiter
Radius (R⊕)	1.00	0.91	11.21
Mass (M⊕)	1.00	0.69	317.83
Density (g/cm³)	5.51	5.05	1.33
Surface Gravity (g)	1.00	0.84	2.53
Insolation (S⊕)	1.00	715.11	0.037

Star Catalogue Identifiers

TIC

TIC 290033595

Gaia DR2

Gaia DR2 2130033097097486336

Gaia DR3

Gaia DR3 2130033097097486336

System

Kepler-1525

Percentile among Rocky Terrestrial cohort

Radius 0.910 R⊕ · percentile 28 / cohort 570

Mass 0.693 M⊕ · percentile 24 / cohort 570

Orbital period 2.42 d · percentile 28 / cohort 567

Distance 382.99 pc · percentile 50 / cohort 566

ESI 0.227 · percentile 18 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

2.417 days

Semi-major axis

0.0356 AU

Eccentricity

0.000

Inclination

89.79 °

Year Length

A year here lasts approximately 2.42 Earth days (0.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0356 AU.

Transit Fingerprint

Depth

0.008 %

Duration

1.966 h

Impact parameter b

0.043

Rp / R★

0.008362

Transit midpoint (BJD)

2,454,964.5374

Photometric dip

Transit produces a flux drop of 85 ppm lasting ≈ 1.97 h.

Extended Orbital Architecture

Planet / star radius ratio

0.008362

Semi-major axis / stellar radius

9.480

Impact parameter (b)

0.043

Transit mid-time (BJD)

2,454,964.5374

Angular separation (arcsec)

0.09290

Eq. Temperature

1,343K

(1070 °C)

Insolation (S⊕)

715.11

Earth = 1.00

Earth Similarity (ESI)

0.227

0 = alien, 1 = Earth-identical

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

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-1525

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,748 K — cooler than the Sun (5,778 K)

Estimated Age

2.82 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.040 R☉

Stellar Mass

1.070 M☉

Metallicity [Fe/H]

0.27

Extended Stellar Properties

Surface gravity (log g)

4.440 dex

Stellar density

0.990 g/cm³

Systemic radial velocity

-18.79 km/s

Metallicity ratio

[Fe/H]

Distance

382.99 parsec

Light-years 1,249.14 ly

V-band magnitude

12.80 mag

Voyager-speed travel 22,028,611 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

2.582 mas

Total Proper Motion

36.784 mas/yr

PM Right Ascension

-8.13 mas/yr

PM Declination

-35.88 mas/yr

Galactic Cartesian (pc)

x = 0.226 · y = -0.603 · z = 0.765

Equatorial (J2000)

RA 290.55945° · Dec 49.94286°

Galactic ℓ, b

81.419° · 15.799°

Ecliptic λ, β

312.295° · 70.378°

HTM-20 index

983072519