Key parameters at a glance

A radius of 1.18 Earth radii
A mass of 1.76 Earth masses
Surface gravity around 1.26 g
An orbital period of 6.480 days
Semi-major axis 0.0662 AU
Equilibrium temperature 934 K (661 °C)
Distance from Earth 2,359.51 light-years
Earth Similarity Index 0.337
Travel time at Voyager 1 speed 41,610,020 years

Kepler-1390 b Planet Profile

Physical Specs

Radius

1.18 R⊕

Radius (Jupiter)

0.105 R♃

Mass

1.76 M⊕

Mass (Jupiter)

0.006 M♃

Density

5.89 g/cm³

Surface Gravity

1.26 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.337

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

#117of 570

top 20.4%

This planet

1.18R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-1430 b 1.18 R⊕ Kepler-1512 b 1.18 R⊕ Kepler-332 d 1.18 R⊕

Metric	Earth	Kepler-1390 b	Jupiter
Radius (R⊕)	1.00	1.18	11.21
Mass (M⊕)	1.00	1.76	317.83
Density (g/cm³)	5.51	5.89	1.33
Surface Gravity (g)	1.00	1.26	2.53
Insolation (S⊕)	1.00	171.13	0.037

Star Catalogue Identifiers

TIC

TIC 264508835

Gaia DR2

Gaia DR2 2086485186737501696

Gaia DR3

Gaia DR3 2086485186737501696

System

Kepler-1390

Percentile among Rocky Terrestrial cohort

Radius 1.180 R⊕ · percentile 77 / cohort 570

Mass 1.760 M⊕ · percentile 71 / cohort 570

Orbital period 6.48 d · percentile 64 / cohort 567

Distance 723.43 pc · percentile 81 / cohort 566

ESI 0.337 · percentile 48 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

6.480 days

Semi-major axis

0.0662 AU

Eccentricity

0.000

Inclination

86.12 °

Year Length

A year here lasts approximately 6.48 Earth days (1.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0662 AU.

Transit Fingerprint

Depth

0.014 %

Duration

3.211 h

Impact parameter b

0.226

Rp / R★

0.010672

Transit midpoint (BJD)

2,454,965.8597

Photometric dip

Transit produces a flux drop of 142 ppm lasting ≈ 3.21 h.

Extended Orbital Architecture

Planet / star radius ratio

0.010672

Semi-major axis / stellar radius

15.200

Impact parameter (b)

0.226

Transit mid-time (BJD)

2,454,965.8597

Angular separation (arcsec)

0.09150

Eq. Temperature

934K

(661 °C)

Insolation (S⊕)

171.13

Earth = 1.00

Earth Similarity (ESI)

0.337

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-1390

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,753 K — cooler than the Sun (5,778 K)

Estimated Age

4.47 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.980 R☉

Stellar Mass

0.980 M☉

Metallicity [Fe/H]

-0.01

Extended Stellar Properties

Surface gravity (log g)

4.450 dex

Stellar density

1.583 g/cm³

Metallicity ratio

[Fe/H]

Distance

723.43 parsec

Light-years 2,359.51 ly

V-band magnitude

14.56 mag

Voyager-speed travel 41,610,020 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.354 mas

Total Proper Motion

21.652 mas/yr

PM Right Ascension

10.59 mas/yr

PM Declination

18.89 mas/yr

Galactic Cartesian (pc)

x = 0.319 · y = -0.584 · z = 0.746

Equatorial (J2000)

RA 298.66244° · Dec 48.24887°

Galactic ℓ, b

82.298° · 10.299°

Ecliptic λ, β

323.152° · 66.477°

HTM-20 index

1480323919