Key parameters at a glance

A radius of 1.61 Earth radii
A mass of 3.22 Earth masses
Surface gravity around 1.24 g
An orbital period of 101.952 days
Semi-major axis 0.4322 AU
Equilibrium temperature 428 K (155 °C)
Distance from Earth 2,919.32 light-years
Earth Similarity Index 0.663
Travel time at Voyager 1 speed 51,482,227 years

Kepler-1620 b Planet Profile

Physical Specs

Radius

1.61 R⊕

Radius (Jupiter)

0.144 R♃

Mass

3.22 M⊕

Mass (Jupiter)

0.010 M♃

Density

4.24 g/cm³

Surface Gravity

1.24 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.663

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

#550of 1176

top 46.7%

This planet

1.61R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-62 e 1.61 R⊕ Kepler-149 c 1.61 R⊕ Kepler-140 b 1.61 R⊕

Metric	Earth	Kepler-1620 b	Jupiter
Radius (R⊕)	1.00	1.61	11.21
Mass (M⊕)	1.00	3.22	317.83
Density (g/cm³)	5.51	4.24	1.33
Surface Gravity (g)	1.00	1.24	2.53
Insolation (S⊕)	1.00	7.92	0.037

Star Catalogue Identifiers

TIC

TIC 273045068

Gaia DR2

Gaia DR2 2080358463124310400

System

Kepler-1620

Percentile among Super-Earth cohort

Radius 1.610 R⊕ · percentile 52 / cohort 1176

Mass 3.220 M⊕ · percentile 47 / cohort 1176

Orbital period 101.95 d · percentile 99 / cohort 1164

Distance 895.07 pc · percentile 75 / cohort 1171

ESI 0.663 · percentile 83 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

101.952 days

Semi-major axis

0.4322 AU

Eccentricity

0.000

Inclination

89.96 °

Year Length

A year here lasts approximately 101.95 Earth days (27.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.4322 AU.

Transit Fingerprint

Depth

0.017 %

Duration

5.989 h

Impact parameter b

0.077

Rp / R★

0.011803

Transit midpoint (BJD)

2,455,039.3507

Photometric dip

Transit produces a flux drop of 165 ppm lasting ≈ 5.99 h.

Extended Orbital Architecture

Planet / star radius ratio

0.011803

Semi-major axis / stellar radius

131.030

Impact parameter (b)

0.077

Transit mid-time (BJD)

2,455,039.3507

Angular separation (arcsec)

0.48300

Eq. Temperature

428K

(155 °C)

Insolation (S⊕)

7.92

Earth = 1.00

Earth Similarity (ESI)

0.663

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-1620

Spectral Class

F-type yellow-white

Effective Temperature

6,157 K — hotter than the Sun (5,778 K)

Estimated Age

3.02 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.230 R☉

Stellar Mass

1.150 M☉

Metallicity [Fe/H]

0.03

Extended Stellar Properties

Surface gravity (log g)

4.310 dex

Stellar density

4.110 g/cm³

Metallicity ratio

[Fe/H]

Distance

895.07 parsec

Light-years 2,919.32 ly

V-band magnitude

13.69 mag

Voyager-speed travel 51,482,227 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Total Proper Motion

19.377 mas/yr

PM Right Ascension

-6.62 mas/yr

PM Declination

18.21 mas/yr

Galactic Cartesian (pc)

x = 0.313 · y = -0.607 · z = 0.731

Equatorial (J2000)

RA 297.27090° · Dec 46.92847°

Galactic ℓ, b

80.661° · 10.476°

Ecliptic λ, β

319.593° · 65.738°

HTM-20 index

1117441210