Key parameters at a glance

A radius of 2.84 Earth radii
A mass of 8.45 Earth masses
Surface gravity around 1.05 g
An orbital period of 3.722 days
Semi-major axis 0.0452 AU
Equilibrium temperature 1,046 K (773 °C)
Distance from Earth 4,714.68 light-years
Earth Similarity Index 0.227
Travel time at Voyager 1 speed 83,143,427 years

Kepler-612 b Planet Profile

Physical Specs

Radius

2.84 R⊕

Radius (Jupiter)

0.253 R♃

Mass

8.45 M⊕

Mass (Jupiter)

0.027 M♃

Density

2.03 g/cm³

Surface Gravity

1.05 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.227

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

#694of 1978

top 35.0%

This planet

2.84R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-133 c 2.84 R⊕ Kepler-527 b 2.84 R⊕ Kepler-599 b 2.84 R⊕

Metric	Earth	Kepler-612 b	Jupiter
Radius (R⊕)	1.00	2.84	11.21
Mass (M⊕)	1.00	8.45	317.83
Density (g/cm³)	5.51	2.03	1.33
Surface Gravity (g)	1.00	1.05	2.53
Insolation (S⊕)	1.00	997.09	0.037

Star Catalogue Identifiers

TIC

TIC 159723305

Gaia DR2

Gaia DR2 2126684019040772480

Gaia DR3

Gaia DR3 2126684019040772480

System

Kepler-612

Percentile among Sub-Neptune cohort

Radius 2.840 R⊕ · percentile 65 / cohort 1978

Mass 8.450 M⊕ · percentile 59 / cohort 1978

Orbital period 3.72 d · percentile 8 / cohort 1946

Distance 1,445.53 pc · percentile 92 / cohort 1975

ESI 0.227 · percentile 11 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

3.722 days

Semi-major axis

0.0452 AU

Eccentricity

0.000

Inclination

86.76 °

Year Length

A year here lasts approximately 3.72 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0452 AU.

Transit Fingerprint

Depth

0.076 %

Duration

1.991 h

Impact parameter b

0.639

Rp / R★

0.027307

Transit midpoint (BJD)

2,455,004.5603

Photometric dip

Transit produces a flux drop of 757 ppm lasting ≈ 1.99 h.

Extended Orbital Architecture

Planet / star radius ratio

0.027307

Semi-major axis / stellar radius

11.420

Impact parameter (b)

0.639

Transit mid-time (BJD)

2,455,004.5603

Angular separation (arcsec)

0.03130

Eq. Temperature

1,046K

(773 °C)

Insolation (S⊕)

997.09

Earth = 1.00

Earth Similarity (ESI)

0.227

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-612

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,693 K — cooler than the Sun (5,778 K)

Estimated Age

4.47 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.960 R☉

Stellar Mass

0.980 M☉

Metallicity [Fe/H]

0.04

Extended Stellar Properties

Surface gravity (log g)

4.460 dex

Stellar density

2.083 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,445.53 parsec

Light-years 4,714.68 ly

V-band magnitude

15.19 mag

Voyager-speed travel 83,143,427 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.663 mas

Total Proper Motion

11.407 mas/yr

PM Right Ascension

-2.03 mas/yr

PM Declination

-11.23 mas/yr

Galactic Cartesian (pc)

x = 0.254 · y = -0.650 · z = 0.716

Equatorial (J2000)

RA 291.35463° · Dec 45.74786°

Galactic ℓ, b

77.695° · 13.584°

Ecliptic λ, β

309.214° · 66.304°

HTM-20 index

1443065466