Key parameters at a glance

A radius of 1.29 Earth radii
A mass of 2.21 Earth masses
Surface gravity around 1.33 g
An orbital period of 5.509 days
Semi-major axis 0.0607 AU
Equilibrium temperature 934 K (661 °C)
Distance from Earth 1,340.75 light-years
Earth Similarity Index 0.334
Travel time at Voyager 1 speed 23,644,165 years

Kepler-1012 b Planet Profile

Physical Specs

Radius

1.29 R⊕

Radius (Jupiter)

0.115 R♃

Mass

2.21 M⊕

Mass (Jupiter)

0.007 M♃

Density

5.66 g/cm³

Surface Gravity

1.33 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.334

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

#1100of 1176

top 93.5%

This planet

1.29R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-211 c 1.29 R⊕ Kepler-312 b 1.29 R⊕ Kepler-173 b 1.29 R⊕

Metric	Earth	Kepler-1012 b	Jupiter
Radius (R⊕)	1.00	1.29	11.21
Mass (M⊕)	1.00	2.21	317.83
Density (g/cm³)	5.51	5.66	1.33
Surface Gravity (g)	1.00	1.33	2.53
Insolation (S⊕)	1.00	191.81	0.037

Star Catalogue Identifiers

TIC

TIC 158986490

Gaia DR2

Gaia DR2 2127749342727327616

Gaia DR3

Gaia DR3 2127749342727327616

System

Kepler-1012

Percentile among Super-Earth cohort

Radius 1.290 R⊕ · percentile 6 / cohort 1176

Mass 2.210 M⊕ · percentile 6 / cohort 1176

Orbital period 5.51 d · percentile 43 / cohort 1164

Distance 411.08 pc · percentile 40 / cohort 1171

ESI 0.334 · percentile 46 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

5.509 days

Semi-major axis

0.0607 AU

Eccentricity

0.000

Inclination

82.78 °

Year Length

A year here lasts approximately 5.51 Earth days (1.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0607 AU.

Transit Fingerprint

Depth

0.021 %

Duration

2.947 h

Impact parameter b

0.390

Rp / R★

0.013125

Transit midpoint (BJD)

2,454,965.2985

Photometric dip

Transit produces a flux drop of 212 ppm lasting ≈ 2.95 h.

Extended Orbital Architecture

Planet / star radius ratio

0.013125

Semi-major axis / stellar radius

14.250

Impact parameter (b)

0.390

Transit mid-time (BJD)

2,454,965.2985

Angular separation (arcsec)

0.14800

Eq. Temperature

934K

(661 °C)

Insolation (S⊕)

191.81

Earth = 1.00

Earth Similarity (ESI)

0.334

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-1012

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,556 K — cooler than the Sun (5,778 K)

Estimated Age

3.72 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.910 R☉

Stellar Mass

0.950 M☉

Metallicity [Fe/H]

0.05

Extended Stellar Properties

Surface gravity (log g)

4.500 dex

Stellar density

1.370 g/cm³

Metallicity ratio

[Fe/H]

Distance

411.08 parsec

Light-years 1,340.75 ly

V-band magnitude

13.49 mag

Voyager-speed travel 23,644,165 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

2.404 mas

Total Proper Motion

4.709 mas/yr

PM Right Ascension

-2.11 mas/yr

PM Declination

4.21 mas/yr

Galactic Cartesian (pc)

x = 0.228 · y = -0.650 · z = 0.725

Equatorial (J2000)

RA 289.29623° · Dec 46.45799°

Galactic ℓ, b

77.755° · 15.177°

Ecliptic λ, β

306.447° · 67.471°

HTM-20 index

1788858400