Key parameters at a glance

A radius of 1.19 Earth radii
A mass of 1.81 Earth masses
Surface gravity around 1.28 g
An orbital period of 5.350 days
Semi-major axis 0.0603 AU
Equilibrium temperature 1,156 K (883 °C)
Distance from Earth 2,634.73 light-years
Earth Similarity Index 0.266
Travel time at Voyager 1 speed 46,463,413 years

Kepler-1213 b Planet Profile

Physical Specs

Radius

1.19 R⊕

Radius (Jupiter)

0.106 R♃

Mass

1.81 M⊕

Mass (Jupiter)

0.006 M♃

Density

5.90 g/cm³

Surface Gravity

1.28 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.266

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

#101of 570

top 17.5%

This planet

1.19R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

KOI-351 c 1.19 R⊕ Kepler-953 c 1.19 R⊕ Kepler-310 b 1.19 R⊕

Metric	Earth	Kepler-1213 b	Jupiter
Radius (R⊕)	1.00	1.19	11.21
Mass (M⊕)	1.00	1.81	317.83
Density (g/cm³)	5.51	5.90	1.33
Surface Gravity (g)	1.00	1.28	2.53
Insolation (S⊕)	1.00	595.42	0.037

Star Catalogue Identifiers

TIC

TIC 416266465

Gaia DR2

Gaia DR2 2133138942567823744

Gaia DR3

Gaia DR3 2133138942567823744

System

Kepler-1213

Percentile among Rocky Terrestrial cohort

Radius 1.190 R⊕ · percentile 80 / cohort 570

Mass 1.810 M⊕ · percentile 74 / cohort 570

Orbital period 5.35 d · percentile 57 / cohort 567

Distance 807.81 pc · percentile 86 / cohort 566

ESI 0.266 · percentile 29 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

5.350 days

Semi-major axis

0.0603 AU

Eccentricity

0.000

Inclination

80.06 °

Year Length

A year here lasts approximately 5.35 Earth days (1.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0603 AU.

Transit Fingerprint

Depth

0.009 %

Duration

4.209 h

Impact parameter b

0.858

Rp / R★

0.008577

Transit midpoint (BJD)

2,454,966.8804

Photometric dip

Transit produces a flux drop of 89 ppm lasting ≈ 4.21 h.

Extended Orbital Architecture

Planet / star radius ratio

0.008577

Semi-major axis / stellar radius

5.370

Impact parameter (b)

0.858

Transit mid-time (BJD)

2,454,966.8804

Angular separation (arcsec)

0.07460

Eq. Temperature

1,156K

(883 °C)

Insolation (S⊕)

595.42

Earth = 1.00

Earth Similarity (ESI)

0.266

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-1213

Spectral Class

F-type yellow-white

Effective Temperature

6,050 K — hotter than the Sun (5,778 K)

Estimated Age

3.47 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.210 R☉

Stellar Mass

1.140 M☉

Metallicity [Fe/H]

0.13

Extended Stellar Properties

Surface gravity (log g)

4.330 dex

Stellar density

0.350 g/cm³

Metallicity ratio

[Fe/H]

Distance

807.81 parsec

Light-years 2,634.73 ly

V-band magnitude

13.42 mag

Voyager-speed travel 46,463,413 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.209 mas

Total Proper Motion

5.459 mas/yr

PM Right Ascension

2.34 mas/yr

PM Declination

4.93 mas/yr

Galactic Cartesian (pc)

x = 0.210 · y = -0.594 · z = 0.777

Equatorial (J2000)

RA 289.48584° · Dec 50.94420°

Galactic ℓ, b

82.100° · 16.821°

Ecliptic λ, β

311.673° · 71.573°

HTM-20 index

152794174