Key parameters at a glance

A radius of 3.63 Earth radii
A mass of 12.80 Earth masses
Surface gravity around 0.97 g
An orbital period of 16.923 days
Semi-major axis 0.1304 AU
Equilibrium temperature 702 K (429 °C)
Distance from Earth 4,806.27 light-years
Earth Similarity Index 0.310
Travel time at Voyager 1 speed 84,758,521 years

Kepler-1068 b Planet Profile

Physical Specs

Radius

3.63 R⊕

Radius (Jupiter)

0.324 R♃

Mass

12.80 M⊕

Mass (Jupiter)

0.040 M♃

Density

1.47 g/cm³

Surface Gravity

0.97 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.310

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

#127of 1978

top 6.4%

This planet

3.63R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1733 b 3.64 R⊕ Kepler-279 b 3.62 R⊕ HD 51608 b 3.62 R⊕

Metric	Earth	Kepler-1068 b	Jupiter
Radius (R⊕)	1.00	3.63	11.21
Mass (M⊕)	1.00	12.80	317.83
Density (g/cm³)	5.51	1.47	1.33
Surface Gravity (g)	1.00	0.97	2.53
Insolation (S⊕)	1.00	55.93	0.037

Star Catalogue Identifiers

TIC

TIC 271165395

Gaia DR2

Gaia DR2 2128129876831370880

Gaia DR3

Gaia DR3 2128129876831370880

System

Kepler-1068

Percentile among Sub-Neptune cohort

Radius 3.630 R⊕ · percentile 94 / cohort 1978

Mass 12.800 M⊕ · percentile 87 / cohort 1978

Orbital period 16.92 d · percentile 56 / cohort 1946

Distance 1,473.61 pc · percentile 93 / cohort 1975

ESI 0.310 · percentile 31 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

16.923 days

Semi-major axis

0.1304 AU

Eccentricity

0.000

Inclination

88.93 °

Year Length

A year here lasts approximately 16.92 Earth days (4.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1304 AU.

Transit Fingerprint

Depth

0.113 %

Duration

4.062 h

Impact parameter b

0.006

Rp / R★

0.032808

Transit midpoint (BJD)

2,454,978.8121

Photometric dip

Transit produces a flux drop of 1,125 ppm lasting ≈ 4.06 h.

Extended Orbital Architecture

Planet / star radius ratio

0.032808

Semi-major axis / stellar radius

32.879

Impact parameter (b)

0.006

Transit mid-time (BJD)

2,454,978.8121

Angular separation (arcsec)

0.08850

Eq. Temperature

702K

(429 °C)

Insolation (S⊕)

55.93

Earth = 1.00

Earth Similarity (ESI)

0.310

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-1068

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,806 K — hotter than the Sun (5,778 K)

Estimated Age

4.17 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.010 R☉

Stellar Mass

1.010 M☉

Metallicity [Fe/H]

0.03

Extended Stellar Properties

Surface gravity (log g)

4.430 dex

Stellar density

1.090 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,473.61 parsec

Light-years 4,806.27 ly

V-band magnitude

16.10 mag

Voyager-speed travel 84,758,521 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.651 mas

Total Proper Motion

9.182 mas/yr

PM Right Ascension

-0.39 mas/yr

PM Declination

-9.17 mas/yr

Galactic Cartesian (pc)

x = 0.288 · y = -0.627 · z = 0.724

Equatorial (J2000)

RA 294.64817° · Dec 46.39232°

Galactic ℓ, b

79.319° · 11.815°

Ecliptic λ, β

315.048° · 66.020°

HTM-20 index

-1229640910