Key parameters at a glance

A radius of 2.80 Earth radii
A mass of 8.25 Earth masses
Surface gravity around 1.05 g
An orbital period of 6.366 days
Semi-major axis 0.0659 AU
Equilibrium temperature 914 K (641 °C)
Distance from Earth 3,336.77 light-years
Earth Similarity Index 0.264
Travel time at Voyager 1 speed 58,843,963 years

Kepler-694 b Planet Profile

Physical Specs

Radius

2.80 R⊕

Radius (Jupiter)

0.250 R♃

Mass

8.25 M⊕

Mass (Jupiter)

0.026 M♃

Density

2.07 g/cm³

Surface Gravity

1.05 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.264

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

#742of 1978

top 37.5%

This planet

2.80R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-912 b 2.80 R⊕ Kepler-276 d 2.80 R⊕ Kepler-350 d 2.80 R⊕

Metric	Earth	Kepler-694 b	Jupiter
Radius (R⊕)	1.00	2.80	11.21
Mass (M⊕)	1.00	8.25	317.83
Density (g/cm³)	5.51	2.07	1.33
Surface Gravity (g)	1.00	1.05	2.53
Insolation (S⊕)	1.00	206.44	0.037

Star Catalogue Identifiers

TIC

TIC 122713147

Gaia DR2

Gaia DR2 2101495685117920128

Gaia DR3

Gaia DR3 2101495685117920128

System

Kepler-694

Percentile among Sub-Neptune cohort

Radius 2.800 R⊕ · percentile 62 / cohort 1978

Mass 8.250 M⊕ · percentile 57 / cohort 1978

Orbital period 6.37 d · percentile 19 / cohort 1946

Distance 1,023.06 pc · percentile 79 / cohort 1975

ESI 0.264 · percentile 20 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

6.366 days

Semi-major axis

0.0659 AU

Eccentricity

0.000

Inclination

87.92 °

Year Length

A year here lasts approximately 6.37 Earth days (1.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0659 AU.

Transit Fingerprint

Depth

0.078 %

Duration

2.970 h

Impact parameter b

0.524

Rp / R★

0.027312

Transit midpoint (BJD)

2,455,004.1354

Photometric dip

Transit produces a flux drop of 781 ppm lasting ≈ 2.97 h.

Extended Orbital Architecture

Planet / star radius ratio

0.027312

Semi-major axis / stellar radius

14.460

Impact parameter (b)

0.524

Transit mid-time (BJD)

2,455,004.1354

Angular separation (arcsec)

0.06440

Eq. Temperature

914K

(641 °C)

Insolation (S⊕)

206.44

Earth = 1.00

Earth Similarity (ESI)

0.264

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-694

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,700 K — cooler than the Sun (5,778 K)

Estimated Age

4.07 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.950 R☉

Stellar Mass

0.970 M☉

Metallicity [Fe/H]

0.00

Extended Stellar Properties

Surface gravity (log g)

4.470 dex

Stellar density

1.411 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,023.06 parsec

Light-years 3,336.77 ly

V-band magnitude

15.28 mag

Voyager-speed travel 58,843,963 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.949 mas

Total Proper Motion

10.657 mas/yr

PM Right Ascension

4.70 mas/yr

PM Declination

-9.56 mas/yr

Galactic Cartesian (pc)

x = 0.275 · y = -0.710 · z = 0.648

Equatorial (J2000)

RA 291.14953° · Dec 40.42046°

Galactic ℓ, b

72.707° · 11.418°

Ecliptic λ, β

304.912° · 61.321°

HTM-20 index

1397696249