Key parameters at a glance

A radius of 6.40 Earth radii
A mass of 33.60 Earth masses
Surface gravity around 0.82 g
An orbital period of 440.781 days
Semi-major axis 1.1967 AU
Equilibrium temperature 308 K (35 °C)
Distance from Earth 4,155.26 light-years
Earth Similarity Index 0.488
Travel time at Voyager 1 speed 73,278,007 years

1 sibling around KIC 5437945

KIC 5437945 b 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-460 c	Neptune-like	5.52	26.10	220.130	389	2016
KIC 5437945 b this	Neptune-like	6.40	33.60	440.781	308	2015

KIC 5437945 b Planet Profile

Physical Specs

Radius

6.40 R⊕

Radius (Jupiter)

0.571 R♃

Mass

33.60 M⊕

Mass (Jupiter)

0.106 M♃

Density

0.70 g/cm³

Surface Gravity

0.82 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.488

HZ Position Inner

Controversial No

Discovery

Year 2015

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#249of 574

top 43.2%

This planet

6.40R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

Kepler-891 b 6.41 R⊕ CoRoT-8 b 6.39 R⊕ TOI-6038 A b 6.41 R⊕

Metric	Earth	KIC 5437945 b	Jupiter
Radius (R⊕)	1.00	6.40	11.21
Mass (M⊕)	1.00	33.60	317.83
Density (g/cm³)	5.51	0.70	1.33
Surface Gravity (g)	1.00	0.82	2.53
Insolation (S⊕)	1.00	2.90	0.037

Star Catalogue Identifiers

TIC

TIC 121603086

Gaia DR2

Gaia DR2 2102070660978313472

Gaia DR3

Gaia DR3 2102070660978313472

System

KIC 5437945

Percentile among Neptune-like cohort

Radius 6.400 R⊕ · percentile 57 / cohort 574

Mass 33.600 M⊕ · percentile 55 / cohort 574

Orbital period 440.78 d · percentile 95 / cohort 524

Distance 1,274.01 pc · percentile 80 / cohort 572

ESI 0.488 · percentile 88 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

440.781 days

Semi-major axis

1.1967 AU

Eccentricity

0.000

Inclination

89.90 °

Year Length

A year here lasts about 1.21 Earth years on a nearly circular orbit at a mean orbital distance of 1.1967 AU.

Transit Fingerprint

Depth

0.221 %

Duration

21.268 h

Impact parameter b

0.212

Rp / R★

0.047000

Transit midpoint (BJD)

2,454,972.3550

Photometric dip

Transit produces a flux drop of 2,209 ppm lasting ≈ 21.27 h.

Extended Orbital Architecture

Planet / star radius ratio

0.047000

Semi-major axis / stellar radius

158.900

Impact parameter (b)

0.212

Transit mid-time (BJD)

2,454,972.3550

Angular separation (arcsec)

0.93900

Eq. Temperature

308K

(35 °C)

Insolation (S⊕)

2.90

Earth = 1.00

Earth Similarity (ESI)

0.488

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure.

Discovery Paper

Primary reference

Wang et al. 2015

Instrument

Kepler CCD Array

Publication

2015-12

Observation locale

Space

Discovery cohort

Planets confirmed in 2015 at Kepler (12 shown).

Kepler-438 b · Rocky Terrestrial Kepler-445 d · Super-Earth Kepler-442 b · Super-Earth Kepler-439 b · Sub-Neptune Kepler-437 b · Sub-Neptune Kepler-440 b · Super-Earth KIC 8540376 c · Sub-Neptune Kepler-445 b · Super-Earth Kepler-446 d · Super-Earth Kepler-436 b · Sub-Neptune Kepler-445 c · Sub-Neptune Kepler-443 b · Sub-Neptune

Host System: KIC 5437945

Spectral Class

F-type yellow-white

Effective Temperature

6,340 K — hotter than the Sun (5,778 K)

Estimated Age

5.01 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.240 R☉

Stellar Mass

1.070 M☉

Metallicity [Fe/H]

-0.38

Extended Stellar Properties

Surface gravity (log g)

4.160 dex

Stellar density

0.211 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,274.01 parsec

Light-years 4,155.26 ly

V-band magnitude

13.83 mag

Voyager-speed travel 73,278,007 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.756 mas

Total Proper Motion

15.017 mas/yr

PM Right Ascension

8.32 mas/yr

PM Declination

-12.50 mas/yr

Galactic Cartesian (pc)

x = 0.240 · y = -0.720 · z = 0.651

Equatorial (J2000)

RA 288.47490° · Dec 40.65128°

Galactic ℓ, b

72.033° · 13.355°

Ecliptic λ, β

300.936° · 62.120°

HTM-20 index

-1336935098