Key parameters at a glance

A radius of 13.30 Earth radii
A mass of 762.79 Earth masses
Surface gravity around 4.31 g
An orbital period of 1,000.000 days
Semi-major axis 2.4200 AU
Equilibrium temperature 253 K (-20 °C)
Distance from Earth 1,002.34 light-years
Earth Similarity Index 0.440
Travel time at Voyager 1 speed 17,676,196 years

1 sibling around Kepler-539

Kepler-539 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-539 b	Neptune-like	8.37	308.30	125.632	388	2016
Kepler-539 c this	Gas Giant	13.30	762.79	1,000.000	253	2016

Kepler-539 c Planet Profile

Physical Specs

Radius

13.30 R⊕

Radius (Jupiter)

1.180 R♃

Mass

762.79 M⊕

Mass (Jupiter)

2.400 M♃

Density

1.78 g/cm³

Surface Gravity

4.31 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.440

HZ Position Unknown

Controversial No

Discovery

Year 2016

Method Transit Timing Variations

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#793of 1771

top 44.7%

This planet

13.30R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 12661 b 13.30 R⊕ HD 129445 b 13.30 R⊕ GJ 876 b 13.30 R⊕

Metric	Earth	Kepler-539 c	Jupiter
Radius (R⊕)	1.00	13.30	11.21
Mass (M⊕)	1.00	762.79	317.83
Density (g/cm³)	5.51	1.78	1.33
Surface Gravity (g)	1.00	4.31	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	762.792 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 171510762

Gaia DR2

Gaia DR2 2075377679763353984

Gaia DR3

Gaia DR3 2075377679763353984

System

Kepler-539

Percentile among Gas Giant cohort

Radius 13.300 R⊕ · percentile 53 / cohort 1771

Mass 762.792 M⊕ · percentile 60 / cohort 1747

Orbital period 1,000.00 d · percentile 77 / cohort 1533

Distance 307.32 pc · percentile 61 / cohort 1759

ESI 0.440 · percentile 98 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

1,000.000 days

Semi-major axis

2.4200 AU

Eccentricity

0.500

Inclination

— °

Year Length

A year here lasts about 2.74 Earth years on a highly eccentric trajectory at a mean orbital distance of 2.4200 AU.

Eq. Temperature

253K

(-20 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.440

0 = alien, 1 = Earth-identical

Insufficient insolation data — surface water would be frozen.

Discovery Paper

Primary reference

Mancini 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-539

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,820 K — hotter than the Sun (5,778 K)

Estimated Age

0.91 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.952 R☉

Stellar Mass

1.048 M☉

Metallicity [Fe/H]

-0.01

Extended Stellar Properties

Surface gravity (log g)

4.502 dex

Stellar density

1.713 g/cm³

Systemic radial velocity

9.96 km/s

Rotational v·sin i

4.40 km/s

Rotation period

11.77 days

Metallicity ratio

[Fe/H]

Distance

307.32 parsec

Light-years 1,002.34 ly

V-band magnitude

12.44 mag

Voyager-speed travel 17,676,196 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

3.226 mas

Total Proper Motion

9.816 mas/yr

PM Right Ascension

2.97 mas/yr

PM Declination

9.36 mas/yr

Galactic Cartesian (pc)

x = 0.362 · y = -0.651 · z = 0.667

Equatorial (J2000)

RA 299.12246° · Dec 41.86680°

Galactic ℓ, b

76.878° · 6.818°

Ecliptic λ, β

317.557° · 60.587°

HTM-20 index

-332080675