Key parameters at a glance

A radius of 1.75 Earth radii
A mass of 3.71 Earth masses
Surface gravity around 1.21 g
An orbital period of 16.832 days
Semi-major axis 0.1256 AU
Equilibrium temperature 690 K (417 °C)
Distance from Earth 2,472.82 light-years
Earth Similarity Index 0.417
Travel time at Voyager 1 speed 43,608,124 years

Kepler-1243 b Planet Profile

Physical Specs

Radius

1.75 R⊕

Radius (Jupiter)

0.156 R♃

Mass

3.71 M⊕

Mass (Jupiter)

0.012 M♃

Density

3.80 g/cm³

Surface Gravity

1.21 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.417

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

#326of 1176

top 27.6%

This planet

1.75R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-403 c 1.75 R⊕ Kepler-301 d 1.75 R⊕ Kepler-122 f 1.75 R⊕

Metric	Earth	Kepler-1243 b	Jupiter
Radius (R⊕)	1.00	1.75	11.21
Mass (M⊕)	1.00	3.71	317.83
Density (g/cm³)	5.51	3.80	1.33
Surface Gravity (g)	1.00	1.21	2.53
Insolation (S⊕)	1.00	36.16	0.037

Star Catalogue Identifiers

TIC

TIC 270782121

Gaia DR2

Gaia DR2 2078147796220283776

Gaia DR3

Gaia DR3 2078147796220283776

System

Kepler-1243

Percentile among Super-Earth cohort

Radius 1.750 R⊕ · percentile 71 / cohort 1176

Mass 3.710 M⊕ · percentile 64 / cohort 1176

Orbital period 16.83 d · percentile 81 / cohort 1164

Distance 758.17 pc · percentile 64 / cohort 1171

ESI 0.417 · percentile 63 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

16.832 days

Semi-major axis

0.1256 AU

Eccentricity

0.000

Inclination

88.90 °

Year Length

A year here lasts approximately 16.83 Earth days (4.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1256 AU.

Transit Fingerprint

Depth

0.033 %

Duration

3.923 h

Impact parameter b

0.522

Rp / R★

0.016674

Transit midpoint (BJD)

2,454,973.5288

Photometric dip

Transit produces a flux drop of 326 ppm lasting ≈ 3.92 h.

Extended Orbital Architecture

Planet / star radius ratio

0.016674

Semi-major axis / stellar radius

27.640

Impact parameter (b)

0.522

Transit mid-time (BJD)

2,454,973.5288

Angular separation (arcsec)

0.16600

Eq. Temperature

690K

(417 °C)

Insolation (S⊕)

36.16

Earth = 1.00

Earth Similarity (ESI)

0.417

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-1243

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,667 K — cooler than the Sun (5,778 K)

Estimated Age

4.37 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.940 R☉

Stellar Mass

0.960 M☉

Metallicity [Fe/H]

0.01

Extended Stellar Properties

Surface gravity (log g)

4.480 dex

Stellar density

1.562 g/cm³

Metallicity ratio

[Fe/H]

Distance

758.17 parsec

Light-years 2,472.82 ly

V-band magnitude

14.90 mag

Voyager-speed travel 43,608,124 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.291 mas

Total Proper Motion

10.039 mas/yr

PM Right Ascension

-10.04 mas/yr

PM Declination

-0.04 mas/yr

Galactic Cartesian (pc)

x = 0.298 · y = -0.669 · z = 0.680

Equatorial (J2000)

RA 294.00940° · Dec 42.88078°

Galactic ℓ, b

75.924° · 10.613°

Ecliptic λ, β

310.957° · 62.947°

HTM-20 index

-946263736