Key parameters at a glance

A radius of 5.95 Earth radii
A mass of 29.60 Earth masses
Surface gravity around 0.84 g
An orbital period of 7.748 days
Semi-major axis 0.0810 AU
Equilibrium temperature 964 K (691 °C)
Distance from Earth 5,431.51 light-years
Earth Similarity Index 0.179
Travel time at Voyager 1 speed 95,784,647 years

Kepler-690 b Planet Profile

Physical Specs

Radius

5.95 R⊕

Radius (Jupiter)

0.531 R♃

Mass

29.60 M⊕

Mass (Jupiter)

0.093 M♃

Density

0.77 g/cm³

Surface Gravity

0.84 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.179

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

#288of 574

top 50.0%

This planet

5.95R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

HD 152843 c 5.94 R⊕ Kepler-281 d 5.94 R⊕ TOI-4010 c 5.93 R⊕

Metric	Earth	Kepler-690 b	Jupiter
Radius (R⊕)	1.00	5.95	11.21
Mass (M⊕)	1.00	29.60	317.83
Density (g/cm³)	5.51	0.77	1.33
Surface Gravity (g)	1.00	0.84	2.53
Insolation (S⊕)	1.00	225.70	0.037

Star Catalogue Identifiers

TIC

TIC 377918545

Gaia DR2

Gaia DR2 2076459496119200000

Gaia DR3

Gaia DR3 2076459496119200000

System

Kepler-690

Percentile among Neptune-like cohort

Radius 5.950 R⊕ · percentile 50 / cohort 574

Mass 29.600 M⊕ · percentile 49 / cohort 574

Orbital period 7.75 d · percentile 30 / cohort 524

Distance 1,665.31 pc · percentile 87 / cohort 572

ESI 0.179 · percentile 23 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

7.748 days

Semi-major axis

0.0810 AU

Eccentricity

0.000

Inclination

88.02 °

Year Length

A year here lasts approximately 7.75 Earth days (2.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0810 AU.

Transit Fingerprint

Depth

0.247 %

Duration

3.563 h

Impact parameter b

0.386

Rp / R★

0.047155

Transit midpoint (BJD)

2,455,007.9974

Photometric dip

Transit produces a flux drop of 2,472 ppm lasting ≈ 3.56 h.

Extended Orbital Architecture

Planet / star radius ratio

0.047155

Semi-major axis / stellar radius

15.000

Impact parameter (b)

0.386

Transit mid-time (BJD)

2,455,007.9974

Angular separation (arcsec)

0.04860

Eq. Temperature

964K

(691 °C)

Insolation (S⊕)

225.70

Earth = 1.00

Earth Similarity (ESI)

0.179

0 = alien, 1 = Earth-identical

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

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-690

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,913 K — hotter than the Sun (5,778 K)

Estimated Age

3.55 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.160 R☉

Stellar Mass

1.110 M☉

Metallicity [Fe/H]

0.19

Extended Stellar Properties

Surface gravity (log g)

4.350 dex

Stellar density

1.336 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,665.31 parsec

Light-years 5,431.51 ly

V-band magnitude

15.70 mag

Voyager-speed travel 95,784,647 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.574 mas

Total Proper Motion

3.876 mas/yr

PM Right Ascension

2.92 mas/yr

PM Declination

2.55 mas/yr

Galactic Cartesian (pc)

x = 0.319 · y = -0.699 · z = 0.640

Equatorial (J2000)

RA 294.48992° · Dec 39.77148°

Galactic ℓ, b

73.301° · 8.847°

Ecliptic λ, β

309.441° · 59.902°

HTM-20 index

1148424132