Key parameters at a glance

A radius of 1.68 Earth radii
A mass of 3.46 Earth masses
Surface gravity around 1.23 g
An orbital period of 11.201 days
Semi-major axis 0.0975 AU
Equilibrium temperature 808 K (535 °C)
Distance from Earth 4,649.13 light-years
Earth Similarity Index 0.361
Travel time at Voyager 1 speed 81,987,323 years

Kepler-1401 b Planet Profile

Physical Specs

Radius

1.68 R⊕

Radius (Jupiter)

0.150 R♃

Mass

3.46 M⊕

Mass (Jupiter)

0.011 M♃

Density

4.01 g/cm³

Surface Gravity

1.23 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.361

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

#435of 1176

top 36.9%

This planet

1.68R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-795 b 1.68 R⊕ Kepler-1449 b 1.68 R⊕ Kepler-188 b 1.68 R⊕

Metric	Earth	Kepler-1401 b	Jupiter
Radius (R⊕)	1.00	1.68	11.21
Mass (M⊕)	1.00	3.46	317.83
Density (g/cm³)	5.51	4.01	1.33
Surface Gravity (g)	1.00	1.23	2.53
Insolation (S⊕)	1.00	100.91	0.037

Star Catalogue Identifiers

TIC

TIC 121272493

Gaia DR2

Gaia DR2 2100643632324807296

Gaia DR3

Gaia DR3 2100643632324807296

System

Kepler-1401

Percentile among Super-Earth cohort

Radius 1.680 R⊕ · percentile 62 / cohort 1176

Mass 3.460 M⊕ · percentile 56 / cohort 1176

Orbital period 11.20 d · percentile 67 / cohort 1164

Distance 1,425.43 pc · percentile 94 / cohort 1171

ESI 0.361 · percentile 53 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

11.201 days

Semi-major axis

0.0975 AU

Eccentricity

0.000

Inclination

81.71 °

Year Length

A year here lasts approximately 11.20 Earth days (3.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0975 AU.

Transit Fingerprint

Depth

0.022 %

Duration

3.786 h

Impact parameter b

0.098

Rp / R★

0.013965

Transit midpoint (BJD)

2,454,970.5046

Photometric dip

Transit produces a flux drop of 220 ppm lasting ≈ 3.79 h.

Extended Orbital Architecture

Planet / star radius ratio

0.013965

Semi-major axis / stellar radius

22.816

Impact parameter (b)

0.098

Transit mid-time (BJD)

2,454,970.5046

Angular separation (arcsec)

0.06840

Eq. Temperature

808K

(535 °C)

Insolation (S⊕)

100.91

Earth = 1.00

Earth Similarity (ESI)

0.361

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-1401

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,964 K — hotter than the Sun (5,778 K)

Estimated Age

3.55 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.100 R☉

Stellar Mass

1.070 M☉

Metallicity [Fe/H]

0.04

Extended Stellar Properties

Surface gravity (log g)

4.390 dex

Stellar density

1.791 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,425.43 parsec

Light-years 4,649.13 ly

V-band magnitude

15.22 mag

Voyager-speed travel 81,987,323 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Total Proper Motion

4.930 mas/yr

PM Right Ascension

0.93 mas/yr

PM Declination

-4.84 mas/yr

Galactic Cartesian (pc)

x = 0.227 · y = -0.723 · z = 0.653

Equatorial (J2000)

RA 287.46603° · Dec 40.75842°

Galactic ℓ, b

71.812° · 14.097°

Ecliptic λ, β

299.411° · 62.426°

HTM-20 index

-1791489440