Key parameters at a glance

A radius of 4.14 Earth radii
A mass of 16.00 Earth masses
Surface gravity around 0.93 g
An orbital period of 35.597 days
Semi-major axis 0.2243 AU
Equilibrium temperature 646 K (373 °C)
Distance from Earth 1,704.51 light-years
Earth Similarity Index 0.318
Travel time at Voyager 1 speed 30,058,989 years

Kepler-1715 b Planet Profile

Physical Specs

Radius

4.14 R⊕

Radius (Jupiter)

0.369 R♃

Mass

16.00 M⊕

Mass (Jupiter)

0.050 M♃

Density

1.24 g/cm³

Surface Gravity

0.93 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.318

HZ Position Inner

Controversial No

Discovery

Year 2021

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#534of 574

top 92.9%

This planet

4.14R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

GJ 687 c 4.14 R⊕ TOI-1272 b 4.13 R⊕ Kepler-315 c 4.15 R⊕

Metric	Earth	Kepler-1715 b	Jupiter
Radius (R⊕)	1.00	4.14	11.21
Mass (M⊕)	1.00	16.00	317.83
Density (g/cm³)	5.51	1.24	1.33
Surface Gravity (g)	1.00	0.93	2.53
Insolation (S⊕)	1.00	53.00	0.037

Star Catalogue Identifiers

TIC

TIC 138431008

Gaia DR2

Gaia DR2 2077420842932795776

Gaia DR3

Gaia DR3 2077420842932795776

System

Kepler-1715

Percentile among Neptune-like cohort

Radius 4.140 R⊕ · percentile 7 / cohort 574

Mass 16.000 M⊕ · percentile 12 / cohort 574

Orbital period 35.60 d · percentile 63 / cohort 524

Distance 522.61 pc · percentile 58 / cohort 572

ESI 0.318 · percentile 54 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

35.597 days

Semi-major axis

0.2243 AU

Eccentricity

0.000

Inclination

87.51 °

Year Length

A year here lasts approximately 35.60 Earth days (9.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2243 AU.

Transit Fingerprint

Depth

0.065 %

Duration

6.084 h

Impact parameter b

0.410

Rp / R★

0.023930

Transit midpoint (BJD)

2,455,020.5258

Photometric dip

Transit produces a flux drop of 652 ppm lasting ≈ 6.08 h.

Extended Orbital Architecture

Planet / star radius ratio

0.023930

Semi-major axis / stellar radius

20.600

Impact parameter (b)

0.410

Transit mid-time (BJD)

2,455,020.5258

Angular separation (arcsec)

0.42900

Eq. Temperature

646K

(373 °C)

Insolation (S⊕)

53.00

Earth = 1.00

Earth Similarity (ESI)

0.318

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.

Detection Signatures

Transit photometry

A transit dip has been observed from at least one telescope.

Transit timing variations

Gravitational interactions from neighbours have been detected.

Discovery Paper

Primary reference

Valizadegan et al. 2022

Instrument

Kepler CCD Array

Publication

2022-02

Observation locale

Space

Discovery cohort

Planets confirmed in 2021 at Kepler (12 shown).

Kepler-1816 b · Super-Earth Kepler-1705 c · Sub-Neptune Kepler-1948 b · Rocky Terrestrial Kepler-196 d · Sub-Neptune Kepler-1853 b · Super-Earth Kepler-1840 b · Sub-Neptune Kepler-1881 b · Sub-Neptune Kepler-1858 b · Sub-Neptune Kepler-1874 b · Sub-Neptune Kepler-1802 c · Sub-Neptune Kepler-1749 b · Super-Earth Kepler-1849 b · Sub-Neptune

Host System: Kepler-1715

Spectral Class

F-type yellow-white

Effective Temperature

6,212 K — hotter than the Sun (5,778 K)

Estimated Age

3.47 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.209 R☉

Stellar Mass

1.082 M☉

Metallicity [Fe/H]

-0.04

Extended Stellar Properties

Surface gravity (log g)

4.309 dex

Stellar density

0.131 g/cm³

Metallicity ratio

[Fe/H]

Distance

522.61 parsec

Light-years 1,704.51 ly

V-band magnitude

12.88 mag

Voyager-speed travel 30,058,989 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.887 mas

Total Proper Motion

11.196 mas/yr

PM Right Ascension

3.16 mas/yr

PM Declination

10.74 mas/yr

Galactic Cartesian (pc)

x = 0.303 · y = -0.683 · z = 0.664

Equatorial (J2000)

RA 293.92973° · Dec 41.60290°

Galactic ℓ, b

74.743° · 10.077°

Ecliptic λ, β

309.878° · 61.769°

HTM-20 index

1447178228