Key parameters at a glance

A radius of 1.11 Earth radii
A mass of 1.41 Earth masses
Surface gravity around 1.14 g
An orbital period of 3.482 days
Semi-major axis 0.0435 AU
Equilibrium temperature 1,156 K (883 °C)
Distance from Earth 1,467.70 light-years
Earth Similarity Index 0.271
Travel time at Voyager 1 speed 25,882,923 years

Kepler-746 b Planet Profile

Physical Specs

Radius

1.11 R⊕

Radius (Jupiter)

0.099 R♃

Mass

1.41 M⊕

Mass (Jupiter)

0.004 M♃

Density

5.67 g/cm³

Surface Gravity

1.14 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.271

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

#209of 570

top 36.5%

This planet

1.11R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-124 d 1.11 R⊕ Kepler-327 b 1.11 R⊕ Kepler-333 c 1.11 R⊕

Metric	Earth	Kepler-746 b	Jupiter
Radius (R⊕)	1.00	1.11	11.21
Mass (M⊕)	1.00	1.41	317.83
Density (g/cm³)	5.51	5.67	1.33
Surface Gravity (g)	1.00	1.14	2.53
Insolation (S⊕)	1.00	421.61	0.037

Star Catalogue Identifiers

TIC

TIC 122515955

Gaia DR2

Gaia DR2 2051034247508620672

Gaia DR3

Gaia DR3 2051034251798891904

System

Kepler-746

Percentile among Rocky Terrestrial cohort

Radius 1.110 R⊕ · percentile 61 / cohort 570

Mass 1.410 M⊕ · percentile 56 / cohort 570

Orbital period 3.48 d · percentile 38 / cohort 567

Distance 450.00 pc · percentile 58 / cohort 566

ESI 0.271 · percentile 30 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

3.482 days

Semi-major axis

0.0435 AU

Eccentricity

0.000

Inclination

89.71 °

Year Length

A year here lasts approximately 3.48 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0435 AU.

Transit Fingerprint

Depth

0.014 %

Duration

1.839 h

Impact parameter b

0.076

Rp / R★

0.010836

Transit midpoint (BJD)

2,454,965.9900

Photometric dip

Transit produces a flux drop of 135 ppm lasting ≈ 1.84 h.

Extended Orbital Architecture

Planet / star radius ratio

0.010836

Semi-major axis / stellar radius

14.843

Impact parameter (b)

0.076

Transit mid-time (BJD)

2,454,965.9900

Angular separation (arcsec)

0.09670

Eq. Temperature

1,156K

(883 °C)

Insolation (S⊕)

421.61

Earth = 1.00

Earth Similarity (ESI)

0.271

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-746

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,418 K — cooler than the Sun (5,778 K)

Estimated Age

8.71 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.930 R☉

Stellar Mass

0.910 M☉

Metallicity [Fe/H]

0.09

Extended Stellar Properties

Surface gravity (log g)

4.460 dex

Stellar density

5.104 g/cm³

Metallicity ratio

[Fe/H]

Distance

450.00 parsec

Light-years 1,467.70 ly

V-band magnitude

13.79 mag

Voyager-speed travel 25,882,923 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

1.286 mas

Total Proper Motion

8.439 mas/yr

PM Right Ascension

-1.97 mas/yr

PM Declination

8.21 mas/yr

Galactic Cartesian (pc)

x = 0.281 · y = -0.744 · z = 0.607

Equatorial (J2000)

RA 290.68221° · Dec 37.35516°

Galactic ℓ, b

69.742° · 10.392°

Ecliptic λ, β

302.480° · 58.484°

HTM-20 index

1852292278