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 4.370 days
Semi-major axis 0.0519 AU
Equilibrium temperature 1,191 K (918 °C)
Distance from Earth 4,104.22 light-years
Earth Similarity Index 0.252
Travel time at Voyager 1 speed 72,377,856 years

Kepler-1216 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 0.252

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-1216 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	415.55	0.037

Star Catalogue Identifiers

TIC

TIC 158486842

Gaia DR2

Gaia DR2 2130309796070517888

Gaia DR3

Gaia DR3 2130309796070517888

System

Kepler-1216

Percentile among Super-Earth cohort

Radius 1.390 R⊕ · percentile 19 / cohort 1176

Mass 2.510 M⊕ · percentile 19 / cohort 1176

Orbital period 4.37 d · percentile 35 / cohort 1164

Distance 1,258.36 pc · percentile 90 / cohort 1171

ESI 0.252 · percentile 23 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

4.370 days

Semi-major axis

0.0519 AU

Eccentricity

0.000

Inclination

89.55 °

Year Length

A year here lasts approximately 4.37 Earth days (1.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0519 AU.

Transit Fingerprint

Depth

0.018 %

Duration

2.819 h

Impact parameter b

0.093

Rp / R★

0.013211

Transit midpoint (BJD)

2,454,964.9240

Photometric dip

Transit produces a flux drop of 178 ppm lasting ≈ 2.82 h.

Extended Orbital Architecture

Planet / star radius ratio

0.013211

Semi-major axis / stellar radius

11.840

Impact parameter (b)

0.093

Transit mid-time (BJD)

2,454,964.9240

Angular separation (arcsec)

0.04120

Eq. Temperature

1,191K

(918 °C)

Insolation (S⊕)

415.55

Earth = 1.00

Earth Similarity (ESI)

0.252

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-1216

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,743 K — cooler than the Sun (5,778 K)

Estimated Age

4.07 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.980 R☉

Stellar Mass

0.990 M☉

Metallicity [Fe/H]

0.03

Extended Stellar Properties

Surface gravity (log g)

4.460 dex

Stellar density

1.644 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,258.36 parsec

Light-years 4,104.22 ly

V-band magnitude

15.26 mag

Voyager-speed travel 72,377,856 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.766 mas

Total Proper Motion

10.891 mas/yr

PM Right Ascension

-10.59 mas/yr

PM Declination

-2.56 mas/yr

Galactic Cartesian (pc)

x = 0.208 · y = -0.664 · z = 0.718

Equatorial (J2000)

RA 287.40527° · Dec 45.91798°

Galactic ℓ, b

76.707° · 16.170°

Ecliptic λ, β

302.763° · 67.387°

HTM-20 index

-1202227699