Key parameters at a glance

A radius of 2.69 Earth radii
A mass of 7.70 Earth masses
Surface gravity around 1.06 g
An orbital period of 34.436 days
Semi-major axis 0.2140 AU
Equilibrium temperature 652 K (379 °C)
Distance from Earth 1,524.37 light-years
Earth Similarity Index 0.377
Travel time at Voyager 1 speed 26,882,292 years

Kepler-512 b Planet Profile

Physical Specs

Radius

2.69 R⊕

Radius (Jupiter)

0.240 R♃

Mass

7.70 M⊕

Mass (Jupiter)

0.024 M♃

Density

2.17 g/cm³

Surface Gravity

1.06 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.377

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

#881of 1978

top 44.5%

This planet

2.69R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1369 b 2.69 R⊕ Kepler-417 c 2.69 R⊕ HD 28109 b 2.69 R⊕

Metric	Earth	Kepler-512 b	Jupiter
Radius (R⊕)	1.00	2.69	11.21
Mass (M⊕)	1.00	7.70	317.83
Density (g/cm³)	5.51	2.17	1.33
Surface Gravity (g)	1.00	1.06	2.53
Insolation (S⊕)	1.00	32.33	0.037

Star Catalogue Identifiers

TIC

TIC 28448711

Gaia DR2

Gaia DR2 2086940448965828992

Gaia DR3

Gaia DR3 2086940448965828992

System

Kepler-512

Percentile among Sub-Neptune cohort

Radius 2.690 R⊕ · percentile 55 / cohort 1978

Mass 7.700 M⊕ · percentile 51 / cohort 1978

Orbital period 34.44 d · percentile 77 / cohort 1946

Distance 467.38 pc · percentile 45 / cohort 1975

ESI 0.377 · percentile 47 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

34.436 days

Semi-major axis

0.2140 AU

Eccentricity

0.000

Inclination

89.98 °

Year Length

A year here lasts approximately 34.44 Earth days (9.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2140 AU.

Transit Fingerprint

Depth

0.042 %

Duration

5.827 h

Impact parameter b

0.811

Rp / R★

0.018814

Transit midpoint (BJD)

2,455,026.0391

Photometric dip

Transit produces a flux drop of 420 ppm lasting ≈ 5.83 h.

Extended Orbital Architecture

Planet / star radius ratio

0.018814

Semi-major axis / stellar radius

46.043

Impact parameter (b)

0.811

Transit mid-time (BJD)

2,455,026.0391

Angular separation (arcsec)

0.45800

Eq. Temperature

652K

(379 °C)

Insolation (S⊕)

32.33

Earth = 1.00

Earth Similarity (ESI)

0.377

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-512

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,997 K — hotter than the Sun (5,778 K)

Estimated Age

3.72 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.300 R☉

Stellar Mass

1.170 M☉

Metallicity [Fe/H]

0.22

Extended Stellar Properties

Surface gravity (log g)

4.280 dex

Stellar density

0.770 g/cm³

Systemic radial velocity

-28.55 km/s

Metallicity ratio

[Fe/H]

Distance

467.38 parsec

Light-years 1,524.37 ly

V-band magnitude

12.73 mag

Voyager-speed travel 26,882,292 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

2.111 mas

Total Proper Motion

5.565 mas/yr

PM Right Ascension

-4.49 mas/yr

PM Declination

3.29 mas/yr

Galactic Cartesian (pc)

x = 0.311 · y = -0.579 · z = 0.754

Equatorial (J2000)

RA 298.26892° · Dec 48.91674°

Galactic ℓ, b

82.761° · 10.853°

Ecliptic λ, β

323.390° · 67.188°

HTM-20 index

1520043442