Key parameters at a glance

A radius of 2.32 Earth radii
A mass of 6.01 Earth masses
Surface gravity around 1.11 g
An orbital period of 7.165 days
Semi-major axis 0.0765 AU
Equilibrium temperature 1,034 K (761 °C)
Distance from Earth 4,596.16 light-years
Earth Similarity Index 0.248
Travel time at Voyager 1 speed 81,053,237 years

Kepler-1812 b Planet Profile

Physical Specs

Radius

2.32 R⊕

Radius (Jupiter)

0.207 R♃

Mass

6.01 M⊕

Mass (Jupiter)

0.019 M♃

Density

2.63 g/cm³

Surface Gravity

1.11 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.248

HZ Position Inner

Controversial No

Discovery

Year 2021

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1466of 1978

top 74.1%

This planet

2.32R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1802 c 2.32 R⊕ TOI-411 c 2.33 R⊕ Kepler-1951 b 2.32 R⊕

Metric	Earth	Kepler-1812 b	Jupiter
Radius (R⊕)	1.00	2.32	11.21
Mass (M⊕)	1.00	6.01	317.83
Density (g/cm³)	5.51	2.63	1.33
Surface Gravity (g)	1.00	1.11	2.53
Insolation (S⊕)	1.00	270.34	0.037

Star Catalogue Identifiers

TIC

TIC 170346516

Gaia DR2

Gaia DR2 2073767994738269952

Gaia DR3

Gaia DR3 2073767994738269952

System

Kepler-1812

Percentile among Sub-Neptune cohort

Radius 2.325 R⊕ · percentile 26 / cohort 1978

Mass 6.010 M⊕ · percentile 25 / cohort 1978

Orbital period 7.17 d · percentile 23 / cohort 1946

Distance 1,409.19 pc · percentile 92 / cohort 1975

ESI 0.248 · percentile 16 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

7.165 days

Semi-major axis

0.0765 AU

Eccentricity

0.000

Inclination

89.75 °

Year Length

A year here lasts approximately 7.17 Earth days (2.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0765 AU.

Transit Fingerprint

Depth

0.043 %

Duration

1.656 h

Impact parameter b

0.955

Rp / R★

0.019138

Transit midpoint (BJD)

2,454,965.9695

Photometric dip

Transit produces a flux drop of 434 ppm lasting ≈ 1.66 h.

Extended Orbital Architecture

Planet / star radius ratio

0.019138

Semi-major axis / stellar radius

32.400

Impact parameter (b)

0.955

Transit mid-time (BJD)

2,454,965.9695

Angular separation (arcsec)

0.05430

Eq. Temperature

1,034K

(761 °C)

Insolation (S⊕)

270.34

Earth = 1.00

Earth Similarity (ESI)

0.248

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

Discovery Paper

Primary reference

Valizadegan et al. 2022

Instrument

Kepler CCD Array

Publication

2022-02

Observation locale

Space

Discovery cohort

Planets confirmed in 2021 at Kepler (12 shown).

Kepler-1816 b · Super-Earth Kepler-1705 c · Sub-Neptune Kepler-1948 b · Rocky Terrestrial Kepler-196 d · Sub-Neptune Kepler-1853 b · Super-Earth Kepler-1840 b · Sub-Neptune Kepler-1881 b · Sub-Neptune Kepler-1858 b · Sub-Neptune Kepler-1874 b · Sub-Neptune Kepler-1802 c · Sub-Neptune Kepler-1749 b · Super-Earth Kepler-1849 b · Sub-Neptune

Host System: Kepler-1812

Spectral Class

F-type yellow-white

Effective Temperature

6,174 K — hotter than the Sun (5,778 K)

Estimated Age

1.00 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.103 R☉

Stellar Mass

1.162 M☉

Metallicity [Fe/H]

0.10

Extended Stellar Properties

Surface gravity (log g)

4.417 dex

Stellar density

12.538 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,409.19 parsec

Light-years 4,596.16 ly

V-band magnitude

15.63 mag

Voyager-speed travel 81,053,237 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.682 mas

Total Proper Motion

1.156 mas/yr

PM Right Ascension

-1.15 mas/yr

PM Declination

-0.15 mas/yr

Galactic Cartesian (pc)

x = 0.359 · y = -0.673 · z = 0.647

Equatorial (J2000)

RA 298.08451° · Dec 40.28325°

Galactic ℓ, b

75.104° · 6.692°

Ecliptic λ, β

314.903° · 59.421°

HTM-20 index

-617571923