Key parameters at a glance

A radius of 1.39 Earth radii
A mass of 2.51 Earth masses
Surface gravity around 1.30 g
An orbital period of 3.938 days
Semi-major axis 0.0547 AU
Equilibrium temperature 1,947 K (1674 °C)
Distance from Earth 2,088.73 light-years
Earth Similarity Index 0.142
Travel time at Voyager 1 speed 36,834,793 years

Kepler-1394 b Planet Profile

Physical Specs

Radius

1.39 R⊕

Radius (Jupiter)

0.124 R♃

Mass

2.51 M⊕

Mass (Jupiter)

0.008 M♃

Density

5.14 g/cm³

Surface Gravity

1.30 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.142

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

#940of 1176

top 79.8%

This planet

1.39R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-224 b 1.39 R⊕ Kepler-208 c 1.39 R⊕ TOI-1749 b 1.39 R⊕

Metric	Earth	Kepler-1394 b	Jupiter
Radius (R⊕)	1.00	1.39	11.21
Mass (M⊕)	1.00	2.51	317.83
Density (g/cm³)	5.51	5.14	1.33
Surface Gravity (g)	1.00	1.30	2.53
Insolation (S⊕)	1.00	2,023.01	0.037

Star Catalogue Identifiers

TIC

TIC 164527695

Gaia DR2

Gaia DR2 2106981831520836736

Gaia DR3

Gaia DR3 2106981831520836736

System

Kepler-1394

Percentile among Super-Earth cohort

Radius 1.390 R⊕ · percentile 19 / cohort 1176

Mass 2.510 M⊕ · percentile 19 / cohort 1176

Orbital period 3.94 d · percentile 31 / cohort 1164

Distance 640.41 pc · percentile 58 / cohort 1171

ESI 0.142 · percentile 3 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

3.938 days

Semi-major axis

0.0547 AU

Eccentricity

0.000

Inclination

87.96 °

Year Length

A year here lasts approximately 3.94 Earth days (1.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0547 AU.

Transit Fingerprint

Depth

0.002 %

Duration

4.916 h

Impact parameter b

0.098

Rp / R★

0.004525

Transit midpoint (BJD)

2,454,968.2785

Photometric dip

Transit produces a flux drop of 24 ppm lasting ≈ 4.92 h.

Extended Orbital Architecture

Planet / star radius ratio

0.004525

Semi-major axis / stellar radius

6.355

Impact parameter (b)

0.098

Transit mid-time (BJD)

2,454,968.2785

Angular separation (arcsec)

0.08550

Eq. Temperature

1,947K

(1674 °C)

Insolation (S⊕)

2,023.01

Earth = 1.00

Earth Similarity (ESI)

0.142

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-1394

Spectral Class

F-type yellow-white

Effective Temperature

6,481 K — hotter than the Sun (5,778 K)

Estimated Age

1.91 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

2.550 R☉

Stellar Mass

1.640 M☉

Metallicity [Fe/H]

0.06

Extended Stellar Properties

Surface gravity (log g)

3.840 dex

Stellar density

0.180 g/cm³

Systemic radial velocity

16.02 km/s

Metallicity ratio

[Fe/H]

Distance

640.41 parsec

Light-years 2,088.73 ly

V-band magnitude

11.71 mag

Voyager-speed travel 36,834,793 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.533 mas

Total Proper Motion

14.030 mas/yr

PM Right Ascension

4.05 mas/yr

PM Declination

-13.43 mas/yr

Galactic Cartesian (pc)

x = 0.164 · y = -0.687 · z = 0.708

Equatorial (J2000)

RA 283.45321° · Dec 45.08407°

Galactic ℓ, b

74.836° · 18.445°

Ecliptic λ, β

295.243° · 67.348°

HTM-20 index

379483943