Key parameters at a glance

A radius of 1.04 Earth radii
A mass of 1.12 Earth masses
Surface gravity around 1.04 g
An orbital period of 0.765 days
Semi-major axis 0.0155 AU
Equilibrium temperature 1,733 K (1460 °C)
Distance from Earth 2,266.43 light-years
Earth Similarity Index 0.172
Travel time at Voyager 1 speed 39,968,410 years
Almost certainly tidally locked to its host star given the close orbit

Kepler-1409 b Planet Profile

Physical Specs

Radius

1.04 R⊕

Radius (Jupiter)

0.093 R♃

Mass

1.12 M⊕

Mass (Jupiter)

0.004 M♃

Density

5.47 g/cm³

Surface Gravity

1.04 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.172

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

#288of 570

top 50.4%

This planet

1.04R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

GJ 1061 b 1.04 R⊕ EPIC 201841433 b 1.04 R⊕ Kepler-1578 b 1.04 R⊕

Metric	Earth	Kepler-1409 b	Jupiter
Radius (R⊕)	1.00	1.04	11.21
Mass (M⊕)	1.00	1.12	317.83
Density (g/cm³)	5.51	5.47	1.33
Surface Gravity (g)	1.00	1.04	2.53
Insolation (S⊕)	1.00	1,552.13	0.037

Star Catalogue Identifiers

TIC

TIC 267745858

Gaia DR2

Gaia DR2 2133215461704521088

Gaia DR3

Gaia DR3 2133215461704521088

System

Kepler-1409

Percentile among Rocky Terrestrial cohort

Radius 1.040 R⊕ · percentile 48 / cohort 570

Mass 1.120 M⊕ · percentile 43 / cohort 570

Orbital period 0.76 d · percentile 8 / cohort 567

Distance 694.89 pc · percentile 80 / cohort 566

ESI 0.172 · percentile 9 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

0.765 days

Semi-major axis

0.0155 AU

Eccentricity

0.000

Inclination

87.31 °

Year Length

A year here lasts roughly 18.4 hours long on a nearly circular orbit at a mean orbital distance of 0.0155 AU.

Transit Fingerprint

Depth

0.016 %

Duration

1.178 h

Impact parameter b

0.360

Rp / R★

0.011696

Transit midpoint (BJD)

2,454,965.1308

Photometric dip

Transit produces a flux drop of 163 ppm lasting ≈ 1.18 h.

Extended Orbital Architecture

Planet / star radius ratio

0.011696

Semi-major axis / stellar radius

4.990

Impact parameter (b)

0.360

Transit mid-time (BJD)

2,454,965.1308

Angular separation (arcsec)

0.02230

Eq. Temperature

1,733K

(1460 °C)

Insolation (S⊕)

1,552.13

Earth = 1.00

Earth Similarity (ESI)

0.172

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched. Close-orbiting tidally-locked around a cool host.

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-1409

Spectral Class

K-type orange

Effective Temperature

5,160 K — cooler than the Sun (5,778 K)

Estimated Age

4.79 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.790 R☉

Stellar Mass

0.830 M☉

Metallicity [Fe/H]

-0.03

Extended Stellar Properties

Surface gravity (log g)

4.570 dex

Stellar density

1.840 g/cm³

Metallicity ratio

[Fe/H]

Distance

694.89 parsec

Light-years 2,266.43 ly

V-band magnitude

15.39 mag

Voyager-speed travel 39,968,410 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.410 mas

Total Proper Motion

3.404 mas/yr

PM Right Ascension

-3.07 mas/yr

PM Declination

1.47 mas/yr

Galactic Cartesian (pc)

x = 0.215 · y = -0.588 · z = 0.779

Equatorial (J2000)

RA 290.08474° · Dec 51.20861°

Galactic ℓ, b

82.506° · 16.576°

Ecliptic λ, β

313.110° · 71.652°

HTM-20 index

31767705