Key parameters at a glance

A radius of 2.00 Earth radii
A mass of 4.66 Earth masses
Surface gravity around 1.17 g
An orbital period of 12.835 days
Semi-major axis 0.1075 AU
Equilibrium temperature 891 K (618 °C)
Distance from Earth 2,606.01 light-years
Earth Similarity Index 0.307
Travel time at Voyager 1 speed 45,957,028 years

2 siblings around Kepler-529

Kepler-529 c shares its host star with 2 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
Kepler-529 b	Super-Earth	1.86	4.12	1.980	1,662	2016
Kepler-529 c this	Sub-Neptune	2.00	4.66	12.835	891	2016
Kepler-529 d	Sub-Neptune	2.80	8.22	35.866	633	2021

Kepler-529 c Planet Profile

Physical Specs

Radius

2.00 R⊕

Radius (Jupiter)

0.178 R♃

Mass

4.66 M⊕

Mass (Jupiter)

0.015 M♃

Density

3.20 g/cm³

Surface Gravity

1.17 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.307

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

#1955of 1978

top 98.8%

This planet

2.00R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-32 c 2.00 R⊕ Kepler-238 f 2.00 R⊕ Kepler-242 c 2.00 R⊕

Metric	Earth	Kepler-529 c	Jupiter
Radius (R⊕)	1.00	2.00	11.21
Mass (M⊕)	1.00	4.66	317.83
Density (g/cm³)	5.51	3.20	1.33
Surface Gravity (g)	1.00	1.17	2.53
Insolation (S⊕)	1.00	149.42	0.037

Star Catalogue Identifiers

TIC

TIC 158108219

Gaia DR2

Gaia DR2 2131505514964760832

Gaia DR3

Gaia DR3 2131505514964760832

System

Kepler-529

Percentile among Sub-Neptune cohort

Radius 2.000 R⊕ · percentile 0 / cohort 1978

Mass 4.660 M⊕ · percentile 2 / cohort 1978

Orbital period 12.83 d · percentile 44 / cohort 1946

Distance 799.01 pc · percentile 65 / cohort 1975

ESI 0.307 · percentile 30 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

12.835 days

Semi-major axis

0.1075 AU

Eccentricity

0.000

Inclination

83.97 °

Year Length

A year here lasts approximately 12.83 Earth days (3.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1075 AU.

Transit Fingerprint

Depth

0.028 %

Duration

3.267 h

Impact parameter b

0.902

Rp / R★

0.016209

Transit midpoint (BJD)

2,454,971.3248

Photometric dip

Transit produces a flux drop of 281 ppm lasting ≈ 3.27 h.

Extended Orbital Architecture

Planet / star radius ratio

0.016209

Semi-major axis / stellar radius

14.200

Impact parameter (b)

0.902

Transit mid-time (BJD)

2,454,971.3248

Angular separation (arcsec)

0.13500

Eq. Temperature

891K

(618 °C)

Insolation (S⊕)

149.42

Earth = 1.00

Earth Similarity (ESI)

0.307

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-529

Spectral Class

F-type yellow-white

Effective Temperature

6,087 K — hotter than the Sun (5,778 K)

Estimated Age

3.98 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.140 R☉

Stellar Mass

1.070 M☉

Metallicity [Fe/H]

-0.10

Extended Stellar Properties

Surface gravity (log g)

4.350 dex

Stellar density

1.109 g/cm³

Metallicity ratio

[Fe/H]

Distance

799.01 parsec

Light-years 2,606.01 ly

V-band magnitude

13.78 mag

Voyager-speed travel 45,957,028 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.552 mas

Total Proper Motion

6.371 mas/yr

PM Right Ascension

3.73 mas/yr

PM Declination

5.17 mas/yr

Galactic Cartesian (pc)

x = 0.184 · y = -0.645 · z = 0.742

Equatorial (J2000)

RA 285.88841° · Dec 47.88036°

Galactic ℓ, b

78.211° · 17.860°

Ecliptic λ, β

301.740° · 69.575°

HTM-20 index

-104798319