Key parameters at a glance

A radius of 12.70 Earth radii
A mass of 2,215.18 Earth masses
Surface gravity around 13.73 g
An orbital period of 223.300 days
Semi-major axis 0.7300 AU
Distance from Earth 2,278.68 light-years
Earth Similarity Index 0.433
Travel time at Voyager 1 speed 40,184,446 years

1 sibling around Kepler-424

Kepler-424 c 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-424 b	Neptune-like	9.98	327.35	3.312	1,116	2014
Kepler-424 c this	Gas Giant	12.70	2,215.18	223.300	—	2014

Kepler-424 c Planet Profile

Physical Specs

Radius

12.70 R⊕

Radius (Jupiter)

1.130 R♃

Mass

2,215.18 M⊕

Mass (Jupiter)

6.970 M♃

Density

5.94 g/cm³

Surface Gravity

13.73 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.433

HZ Position Unknown

Controversial No

Discovery

Year 2014

Method Radial Velocity

Facility McDonald Observatory

Telescope 9.2 m Hobby-Eberly Telescope

Size rank in cohort

Rank by radius

#1130of 1771

top 63.7%

This planet

12.70R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

DP Leo b 12.70 R⊕ HD 233604 b 12.70 R⊕ HD 168863 b 12.70 R⊕

Metric	Earth	Kepler-424 c	Jupiter
Radius (R⊕)	1.00	12.70	11.21
Mass (M⊕)	1.00	2,215.18	317.83
Density (g/cm³)	5.51	5.94	1.33
Surface Gravity (g)	1.00	13.73	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	2,215.180 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

TIC

TIC 264508014

Gaia DR2

Gaia DR2 2086877265710250496

Gaia DR3

Gaia DR3 2086877265710250496

System

Kepler-424

Percentile among Gas Giant cohort

Radius 12.700 R⊕ · percentile 34 / cohort 1771

Mass 2,215.180 M⊕ · percentile 82 / cohort 1747

Orbital period 223.30 d · percentile 58 / cohort 1533

Distance 698.65 pc · percentile 81 / cohort 1759

ESI 0.433 · percentile 95 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

223.300 days

Semi-major axis

0.7300 AU

Eccentricity

—

Inclination

— °

Year Length

A year here lasts approximately 223.30 Earth days (61.1% of a terrestrial year) at a mean orbital distance of 0.7300 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.433

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Endl et al. 2014

Instrument

High Resolution Spectrograph

Publication

2014-11

Observation locale

Ground

Host System: Kepler-424

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,460 K — cooler than the Sun (5,778 K)

Estimated Age

4.90 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.940 R☉

Stellar Mass

1.010 M☉

Metallicity [Fe/H]

0.44

Extended Stellar Properties

Surface gravity (log g)

4.500 dex

Stellar density

1.730 g/cm³

Rotational v·sin i

0.50 km/s

Metallicity ratio

[Fe/H]

Distance

698.65 parsec

Light-years 2,278.68 ly

V-band magnitude

14.43 mag

Voyager-speed travel 40,184,446 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.403 mas

Total Proper Motion

6.295 mas/yr

PM Right Ascension

6.19 mas/yr

PM Declination

1.16 mas/yr

Galactic Cartesian (pc)

x = 0.317 · y = -0.581 · z = 0.750

Equatorial (J2000)

RA 298.62498° · Dec 48.57745°

Galactic ℓ, b

82.577° · 10.483°

Ecliptic λ, β

323.495° · 66.777°

HTM-20 index

1537341302