Key parameters at a glance

A radius of 4.13 Earth radii
A mass of 16.00 Earth masses
Surface gravity around 0.94 g
An orbital period of 3.710 days
Semi-major axis 0.0471 AU
Equilibrium temperature 1,151 K (878 °C)
Distance from Earth 4,166.09 light-years
Earth Similarity Index 0.174
Travel time at Voyager 1 speed 73,468,965 years

Kepler-697 b Planet Profile

Physical Specs

Radius

4.13 R⊕

Radius (Jupiter)

0.368 R♃

Mass

16.00 M⊕

Mass (Jupiter)

0.050 M♃

Density

1.25 g/cm³

Surface Gravity

0.94 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.174

HZ Position Inner

Controversial No

Discovery

Year 2016

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#537of 574

top 93.4%

This planet

4.13R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

Kepler-966 b 4.13 R⊕ HD 28109 c 4.13 R⊕ Kepler-279 e 4.13 R⊕

Metric	Earth	Kepler-697 b	Jupiter
Radius (R⊕)	1.00	4.13	11.21
Mass (M⊕)	1.00	16.00	317.83
Density (g/cm³)	5.51	1.25	1.33
Surface Gravity (g)	1.00	0.94	2.53
Insolation (S⊕)	1.00	472.24	0.037

Star Catalogue Identifiers

TIC

TIC 120042965

Gaia DR2

Gaia DR2 2103728312194385792

Gaia DR3

Gaia DR3 2103728312194385792

System

Kepler-697

Percentile among Neptune-like cohort

Radius 4.130 R⊕ · percentile 6 / cohort 574

Mass 16.000 M⊕ · percentile 12 / cohort 574

Orbital period 3.71 d · percentile 10 / cohort 524

Distance 1,277.33 pc · percentile 80 / cohort 572

ESI 0.174 · percentile 21 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

3.710 days

Semi-major axis

0.0471 AU

Eccentricity

0.000

Inclination

89.86 °

Year Length

A year here lasts approximately 3.71 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0471 AU.

Transit Fingerprint

Depth

0.202 %

Duration

3.100 h

Impact parameter b

0.124

Rp / R★

0.042603

Transit midpoint (BJD)

2,455,004.9879

Photometric dip

Transit produces a flux drop of 2,020 ppm lasting ≈ 3.10 h.

Extended Orbital Architecture

Planet / star radius ratio

0.042603

Semi-major axis / stellar radius

9.626

Impact parameter (b)

0.124

Transit mid-time (BJD)

2,455,004.9879

Angular separation (arcsec)

0.03690

Eq. Temperature

1,151K

(878 °C)

Insolation (S⊕)

472.24

Earth = 1.00

Earth Similarity (ESI)

0.174

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

Discovery Paper

Primary reference

Morton 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-697

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,513 K — cooler than the Sun (5,778 K)

Estimated Age

4.37 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.880 R☉

Stellar Mass

0.920 M☉

Metallicity [Fe/H]

-0.01

Extended Stellar Properties

Surface gravity (log g)

4.520 dex

Stellar density

1.173 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,277.33 parsec

Light-years 4,166.09 ly

V-band magnitude

15.89 mag

Voyager-speed travel 73,468,965 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.754 mas

Total Proper Motion

10.593 mas/yr

PM Right Ascension

2.87 mas/yr

PM Declination

-10.20 mas/yr

Galactic Cartesian (pc)

x = 0.180 · y = -0.729 · z = 0.661

Equatorial (J2000)

RA 283.86439° · Dec 41.34639°

Galactic ℓ, b

71.285° · 16.829°

Ecliptic λ, β

293.897° · 63.640°

HTM-20 index

1449104907