Key parameters at a glance

A radius of 1.28 Earth radii
A mass of 2.18 Earth masses
Surface gravity around 1.33 g
An orbital period of 3.009 days
Semi-major axis 0.0410 AU
Equilibrium temperature 1,177 K (904 °C)
Distance from Earth 3,312.73 light-years
Earth Similarity Index 0.259
Travel time at Voyager 1 speed 58,420,059 years

Kepler-1357 b Planet Profile

Physical Specs

Radius

1.28 R⊕

Radius (Jupiter)

0.114 R♃

Mass

2.18 M⊕

Mass (Jupiter)

0.007 M♃

Density

5.71 g/cm³

Surface Gravity

1.33 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.259

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

#1117of 1176

top 94.9%

This planet

1.28R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-776 b 1.28 R⊕ TOI-431 b 1.28 R⊕ TOI-270 b 1.28 R⊕

Metric	Earth	Kepler-1357 b	Jupiter
Radius (R⊕)	1.00	1.28	11.21
Mass (M⊕)	1.00	2.18	317.83
Density (g/cm³)	5.51	5.71	1.33
Surface Gravity (g)	1.00	1.33	2.53
Insolation (S⊕)	1.00	449.98	0.037

Star Catalogue Identifiers

TIC

TIC 26472830

Gaia DR2

Gaia DR2 2130115281293911552

Gaia DR3

Gaia DR3 2130115281293911552

System

Kepler-1357

Percentile among Super-Earth cohort

Radius 1.280 R⊕ · percentile 4 / cohort 1176

Mass 2.180 M⊕ · percentile 5 / cohort 1176

Orbital period 3.01 d · percentile 21 / cohort 1164

Distance 1,015.69 pc · percentile 81 / cohort 1171

ESI 0.259 · percentile 26 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

3.009 days

Semi-major axis

0.0410 AU

Eccentricity

0.000

Inclination

89.95 °

Year Length

A year here lasts approximately 3.01 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0410 AU.

Transit Fingerprint

Depth

0.019 %

Duration

2.269 h

Impact parameter b

0.180

Rp / R★

0.012882

Transit midpoint (BJD)

2,454,964.6241

Photometric dip

Transit produces a flux drop of 191 ppm lasting ≈ 2.27 h.

Extended Orbital Architecture

Planet / star radius ratio

0.012882

Semi-major axis / stellar radius

10.461

Impact parameter (b)

0.180

Transit mid-time (BJD)

2,454,964.6241

Angular separation (arcsec)

0.04040

Eq. Temperature

1,177K

(904 °C)

Insolation (S⊕)

449.98

Earth = 1.00

Earth Similarity (ESI)

0.259

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-1357

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,597 K — cooler than the Sun (5,778 K)

Estimated Age

4.57 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.900 R☉

Stellar Mass

0.930 M☉

Metallicity [Fe/H]

-0.06

Extended Stellar Properties

Surface gravity (log g)

4.500 dex

Stellar density

2.162 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,015.69 parsec

Light-years 3,312.73 ly

V-band magnitude

15.32 mag

Voyager-speed travel 58,420,059 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.956 mas

Total Proper Motion

11.858 mas/yr

PM Right Ascension

-2.90 mas/yr

PM Declination

-11.50 mas/yr

Galactic Cartesian (pc)

x = 0.234 · y = -0.593 · z = 0.770

Equatorial (J2000)

RA 291.54807° · Dec 50.35326°

Galactic ℓ, b

82.075° · 15.386°

Ecliptic λ, β

314.528° · 70.479°

HTM-20 index

934592451