Key parameters at a glance

A radius of 12.30 Earth radii
A mass of 4,000.00 Earth masses
Surface gravity around 26.44 g
An orbital period of 3,000.000 days
Semi-major axis 3.2709 AU
Distance from Earth 1,103.61 light-years
Earth Similarity Index 0.351
Travel time at Voyager 1 speed 19,462,118 years

1 sibling around Kepler-407

Kepler-407 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-407 b	Rocky Terrestrial	1.19	1.93	0.669	1,983	2014
Kepler-407 c this	Gas Giant	12.30	4,000.00	3,000.000	—	2014

Kepler-407 c Planet Profile

Physical Specs

Radius

12.30 R⊕

Radius (Jupiter)

1.100 R♃

Mass

4,000.00 M⊕

Mass (Jupiter)

12.600 M♃

Density

11.80 g/cm³

Surface Gravity

26.44 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.351

HZ Position Unknown

Controversial No

Discovery

Year 2014

Method Radial Velocity

Facility W. M. Keck Observatory

Telescope 10 m Keck I Telescope

Size rank in cohort

Rank by radius

#1349of 1771

top 76.1%

This planet

12.30R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HAT-P-13 c 12.30 R⊕ HD 22781 b 12.30 R⊕ CHXR 73 b 12.30 R⊕

Metric	Earth	Kepler-407 c	Jupiter
Radius (R⊕)	1.00	12.30	11.21
Mass (M⊕)	1.00	4,000.00	317.83
Density (g/cm³)	5.51	11.80	1.33
Surface Gravity (g)	1.00	26.44	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	4,000.000 M⊕	Direct mass measurement (not derived).
Minimum mass (M sin i)	3,524.410 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

TIC

TIC 405688133

Gaia DR2

Gaia DR2 2132086400701217792

Gaia DR3

Gaia DR3 2132086400701217792

System

Kepler-407

Percentile among Gas Giant cohort

Radius 12.300 R⊕ · percentile 22 / cohort 1771

Mass 4,000.000 M⊕ · percentile 91 / cohort 1747

Orbital period 3,000.00 d · percentile 89 / cohort 1533

Distance 338.37 pc · percentile 64 / cohort 1759

ESI 0.351 · percentile 71 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

3,000.000 days

Semi-major axis

3.2709 AU

Eccentricity

0.221

Inclination

— °

Year Length

A year here lasts about 8.21 Earth years on a mildly elliptical path at a mean orbital distance of 3.2709 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.351

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Marcy et al. 2014

Instrument

HIRES Spectrometer

Publication

2014-02

Observation locale

Ground

Discovery cohort

Planets confirmed in 2014 at W. M. Keck Observatory (11 shown).

HAT-P-44 c · Gas Giant Kepler-94 c · Gas Giant HD 4203 c · Gas Giant Kepler-48 e · Gas Giant HD 10442 b · Gas Giant HD 5319 c · Gas Giant GJ 849 c · Gas Giant HD 75784 b · Gas Giant Kepler-25 d · Gas Giant Kepler-93 c · Unclassified Kepler-97 c · Unclassified

Host System: Kepler-407

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,476 K — cooler than the Sun (5,778 K)

Estimated Age

7.47 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.010 R☉

Stellar Mass

1.000 M☉

Metallicity [Fe/H]

0.33

Extended Stellar Properties

Surface gravity (log g)

4.426 dex

Stellar density

1.380 g/cm³

Systemic radial velocity

-24.13 km/s

Rotational v·sin i

2.00 km/s

Metallicity ratio

[Fe/H]

Distance

338.37 parsec

Light-years 1,103.61 ly

V-band magnitude

12.60 mag

Voyager-speed travel 19,462,118 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

2.927 mas

Total Proper Motion

3.580 mas/yr

PM Right Ascension

-3.54 mas/yr

PM Declination

-0.52 mas/yr

Galactic Cartesian (pc)

x = 0.179 · y = -0.623 · z = 0.762

Equatorial (J2000)

RA 286.03630° · Dec 49.61450°

Galactic ℓ, b

79.954° · 18.383°

Ecliptic λ, β

303.700° · 71.182°

HTM-20 index

-377334373