Key parameters at a glance

A radius of 11.87 Earth radii
A mass of 483.00 Earth masses
Surface gravity around 3.43 g
An orbital period of 1,107.592 days
Semi-major axis 2.7205 AU
Distance from Earth 3,954.48 light-years
Earth Similarity Index 0.389
Travel time at Voyager 1 speed 69,737,223 years

brightness_6

Circumbinary planet

Kepler-1647 b orbits a binary-star pair rather than a single host — a minority architecture in the confirmed catalogue.

Kepler-1647 b Planet Profile

Physical Specs

Radius

11.87 R⊕

Radius (Jupiter)

1.059 R♃

Mass

483.00 M⊕

Mass (Jupiter)

1.520 M♃

Density

1.59 g/cm³

Surface Gravity

3.43 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.389

HZ Position Unknown

Controversial No

Discovery

Year 2016

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1553of 1771

top 87.6%

This planet

11.87R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

TOI-5153 b 11.88 R⊕ K2-99 b 11.88 R⊕ WASP-117 b 11.88 R⊕

Metric	Earth	Kepler-1647 b	Jupiter
Radius (R⊕)	1.00	11.87	11.21
Mass (M⊕)	1.00	483.00	317.83
Density (g/cm³)	5.51	1.59	1.33
Surface Gravity (g)	1.00	3.43	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	483.000 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 170344769

Gaia DR2

Gaia DR2 2073793420945053824

Gaia DR3

Gaia DR3 2073793420945053824

System

Kepler-1647

Percentile among Gas Giant cohort

Radius 11.874 R⊕ · percentile 12 / cohort 1771

Mass 483.000 M⊕ · percentile 48 / cohort 1747

Orbital period 1,107.59 d · percentile 78 / cohort 1533

Distance 1,212.45 pc · percentile 88 / cohort 1759

ESI 0.389 · percentile 82 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

1,107.592 days

Semi-major axis

2.7205 AU

Eccentricity

0.058

Inclination

90.10 °

Year Length

A year here lasts about 3.03 Earth years on a nearly circular orbit at a mean orbital distance of 2.7205 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.389

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Kostov et al. 2016

Instrument

Kepler CCD Array

Publication

2016-08

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-1647

Spectral Class

F-type yellow-white

Effective Temperature

6,210 K — hotter than the Sun (5,778 K)

Estimated Age

4.40 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.790 R☉

Stellar Mass

1.221 M☉

Metallicity [Fe/H]

-0.14

Extended Stellar Properties

Surface gravity (log g)

4.018 dex

Stellar density

0.306 g/cm³

Systemic radial velocity

18.00 km/s

Rotational v·sin i

8.40 km/s

Rotation period

11.23 days

Metallicity ratio

[Fe/H]

Distance

1,212.45 parsec

Light-years 3,954.48 ly

V-band magnitude

13.67 mag

Voyager-speed travel 69,737,223 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.796 mas

Total Proper Motion

8.751 mas/yr

PM Right Ascension

-4.91 mas/yr

PM Declination

-7.24 mas/yr

Galactic Cartesian (pc)

x = 0.358 · y = -0.669 · z = 0.652

Equatorial (J2000)

RA 298.15006° · Dec 40.65618°

Galactic ℓ, b

75.454° · 6.836°

Ecliptic λ, β

315.267° · 59.749°

HTM-20 index

-107408877