Key parameters at a glance

A radius of 2.11 Earth radii
A mass of 5.10 Earth masses
Surface gravity around 1.15 g
An orbital period of 6.883 days
Semi-major axis 0.0678 AU
Equilibrium temperature 857 K (584 °C)
Distance from Earth 3,502.13 light-years
Earth Similarity Index 0.314
Travel time at Voyager 1 speed 61,760,106 years

Kepler-829 b Planet Profile

Physical Specs

Radius

2.11 R⊕

Radius (Jupiter)

0.188 R♃

Mass

5.10 M⊕

Mass (Jupiter)

0.016 M♃

Density

2.98 g/cm³

Surface Gravity

1.15 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.314

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

#1806of 1978

top 91.3%

This planet

2.11R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

61 Vir b 2.11 R⊕ TOI-1238 c 2.11 R⊕ Kepler-1484 b 2.11 R⊕

Metric	Earth	Kepler-829 b	Jupiter
Radius (R⊕)	1.00	2.11	11.21
Mass (M⊕)	1.00	5.10	317.83
Density (g/cm³)	5.51	2.98	1.33
Surface Gravity (g)	1.00	1.15	2.53
Insolation (S⊕)	1.00	247.47	0.037

Star Catalogue Identifiers

TIC

TIC 123451768

Gaia DR2

Gaia DR2 2104759585381348608

Gaia DR3

Gaia DR3 2104759585381348608

System

Kepler-829

Percentile among Sub-Neptune cohort

Radius 2.110 R⊕ · percentile 8 / cohort 1978

Mass 5.100 M⊕ · percentile 9 / cohort 1978

Orbital period 6.88 d · percentile 21 / cohort 1946

Distance 1,073.76 pc · percentile 82 / cohort 1975

ESI 0.314 · percentile 31 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

6.883 days

Semi-major axis

0.0678 AU

Eccentricity

0.000

Inclination

89.82 °

Year Length

A year here lasts approximately 6.88 Earth days (1.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0678 AU.

Transit Fingerprint

Depth

0.046 %

Duration

2.244 h

Impact parameter b

0.075

Rp / R★

0.020128

Transit midpoint (BJD)

2,454,968.2646

Photometric dip

Transit produces a flux drop of 458 ppm lasting ≈ 2.24 h.

Extended Orbital Architecture

Planet / star radius ratio

0.020128

Semi-major axis / stellar radius

23.559

Impact parameter (b)

0.075

Transit mid-time (BJD)

2,454,968.2646

Angular separation (arcsec)

0.06310

Eq. Temperature

857K

(584 °C)

Insolation (S⊕)

247.47

Earth = 1.00

Earth Similarity (ESI)

0.314

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-829

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,698 K — cooler than the Sun (5,778 K)

Estimated Age

4.68 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.970 R☉

Stellar Mass

0.980 M☉

Metallicity [Fe/H]

0.03

Extended Stellar Properties

Surface gravity (log g)

4.460 dex

Stellar density

5.221 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,073.76 parsec

Light-years 3,502.13 ly

V-band magnitude

14.97 mag

Voyager-speed travel 61,760,106 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.903 mas

Total Proper Motion

8.309 mas/yr

PM Right Ascension

7.94 mas/yr

PM Declination

-2.46 mas/yr

Galactic Cartesian (pc)

x = 0.158 · y = -0.721 · z = 0.675

Equatorial (J2000)

RA 282.33283° · Dec 42.46381°

Galactic ℓ, b

71.951° · 18.293°

Ecliptic λ, β

291.861° · 64.970°

HTM-20 index

-792260935