Key parameters at a glance

A radius of 2.59 Earth radii
A mass of 7.22 Earth masses
Surface gravity around 1.08 g
An orbital period of 2.054 days
Semi-major axis 0.0313 AU
Equilibrium temperature 1,523 K (1250 °C)
Distance from Earth 3,801.87 light-years
Earth Similarity Index 0.153
Travel time at Voyager 1 speed 67,045,974 years

Kepler-843 b Planet Profile

Physical Specs

Radius

2.59 R⊕

Radius (Jupiter)

0.231 R♃

Mass

7.22 M⊕

Mass (Jupiter)

0.023 M♃

Density

2.28 g/cm³

Surface Gravity

1.08 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.153

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

#1043of 1978

top 52.7%

This planet

2.59R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-194 c 2.59 R⊕ Kepler-265 e 2.59 R⊕ HD 109833 c 2.59 R⊕

Metric	Earth	Kepler-843 b	Jupiter
Radius (R⊕)	1.00	2.59	11.21
Mass (M⊕)	1.00	7.22	317.83
Density (g/cm³)	5.51	2.28	1.33
Surface Gravity (g)	1.00	1.08	2.53
Insolation (S⊕)	1.00	890.33	0.037

Star Catalogue Identifiers

TIC

TIC 27774043

Gaia DR2

Gaia DR2 2086809645744257792

Gaia DR3

Gaia DR3 2086809645744257792

System

Kepler-843

Percentile among Sub-Neptune cohort

Radius 2.590 R⊕ · percentile 47 / cohort 1978

Mass 7.220 M⊕ · percentile 43 / cohort 1978

Orbital period 2.05 d · percentile 2 / cohort 1946

Distance 1,165.66 pc · percentile 85 / cohort 1975

ESI 0.153 · percentile 2 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

2.054 days

Semi-major axis

0.0313 AU

Eccentricity

0.000

Inclination

87.74 °

Year Length

A year here lasts approximately 2.05 Earth days (0.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0313 AU.

Transit Fingerprint

Depth

0.055 %

Duration

2.181 h

Impact parameter b

0.891

Rp / R★

0.023422

Transit midpoint (BJD)

2,454,966.7350

Photometric dip

Transit produces a flux drop of 547 ppm lasting ≈ 2.18 h.

Extended Orbital Architecture

Planet / star radius ratio

0.023422

Semi-major axis / stellar radius

7.369

Impact parameter (b)

0.891

Transit mid-time (BJD)

2,454,966.7350

Angular separation (arcsec)

0.02690

Eq. Temperature

1,523K

(1250 °C)

Insolation (S⊕)

890.33

Earth = 1.00

Earth Similarity (ESI)

0.153

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-843

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,830 K — hotter than the Sun (5,778 K)

Estimated Age

4.17 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.030 R☉

Stellar Mass

1.020 M☉

Metallicity [Fe/H]

0.05

Extended Stellar Properties

Surface gravity (log g)

4.420 dex

Stellar density

1.795 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,165.66 parsec

Light-years 3,801.87 ly

V-band magnitude

15.35 mag

Voyager-speed travel 67,045,974 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.830 mas

Total Proper Motion

3.805 mas/yr

PM Right Ascension

-1.96 mas/yr

PM Declination

-3.26 mas/yr

Galactic Cartesian (pc)

x = 0.291 · y = -0.588 · z = 0.754

Equatorial (J2000)

RA 296.32198° · Dec 48.97144°

Galactic ℓ, b

82.189° · 12.004°

Ecliptic λ, β

320.519° · 67.846°

HTM-20 index

1794912385