Key parameters at a glance

A radius of 8.41 Earth radii
A mass of 53.40 Earth masses
Surface gravity around 0.76 g
An orbital period of 4.708 days
Semi-major axis 0.0539 AU
Equilibrium temperature 1,162 K (889 °C)
Distance from Earth 3,474.77 light-years
Earth Similarity Index 0.124
Travel time at Voyager 1 speed 61,277,533 years

Kepler-720 b Planet Profile

Physical Specs

Radius

8.41 R⊕

Radius (Jupiter)

0.750 R♃

Mass

53.40 M⊕

Mass (Jupiter)

0.168 M♃

Density

0.49 g/cm³

Surface Gravity

0.76 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.124

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

#128of 574

top 22.1%

This planet

8.41R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

HD 34445 c 8.42 R⊕ GJ 414 A c 8.40 R⊕ OGLE-2012-BLG-0838L b 8.39 R⊕

Metric	Earth	Kepler-720 b	Jupiter
Radius (R⊕)	1.00	8.41	11.21
Mass (M⊕)	1.00	53.40	317.83
Density (g/cm³)	5.51	0.49	1.33
Surface Gravity (g)	1.00	0.76	2.53
Insolation (S⊕)	1.00	384.56	0.037

Star Catalogue Identifiers

TIC

TIC 268159158

Gaia DR2

Gaia DR2 2079056714383865856

Gaia DR3

Gaia DR3 2079056714383865856

System

Kepler-720

Percentile among Neptune-like cohort

Radius 8.410 R⊕ · percentile 78 / cohort 574

Mass 53.400 M⊕ · percentile 73 / cohort 574

Orbital period 4.71 d · percentile 19 / cohort 524

Distance 1,065.37 pc · percentile 76 / cohort 572

ESI 0.124 · percentile 6 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

4.708 days

Semi-major axis

0.0539 AU

Eccentricity

0.000

Inclination

89.71 °

Year Length

A year here lasts approximately 4.71 Earth days (1.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0539 AU.

Transit Fingerprint

Depth

0.791 %

Duration

3.175 h

Impact parameter b

0.008

Rp / R★

0.084004

Transit midpoint (BJD)

2,455,004.4465

Photometric dip

Transit produces a flux drop of 7,913 ppm lasting ≈ 3.17 h.

Extended Orbital Architecture

Planet / star radius ratio

0.084004

Semi-major axis / stellar radius

12.298

Impact parameter (b)

0.008

Transit mid-time (BJD)

2,455,004.4465

Angular separation (arcsec)

0.05060

Eq. Temperature

1,162K

(889 °C)

Insolation (S⊕)

384.56

Earth = 1.00

Earth Similarity (ESI)

0.124

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-720

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,618 K — cooler than the Sun (5,778 K)

Estimated Age

3.63 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.920 R☉

Stellar Mass

0.950 M☉

Metallicity [Fe/H]

0.00

Extended Stellar Properties

Surface gravity (log g)

4.490 dex

Stellar density

1.587 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,065.37 parsec

Light-years 3,474.77 ly

V-band magnitude

15.46 mag

Voyager-speed travel 61,277,533 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.911 mas

Total Proper Motion

1.829 mas/yr

PM Right Ascension

-1.67 mas/yr

PM Declination

-0.74 mas/yr

Galactic Cartesian (pc)

x = 0.344 · y = -0.630 · z = 0.697

Equatorial (J2000)

RA 298.63565° · Dec 44.17094°

Galactic ℓ, b

78.703° · 8.289°

Ecliptic λ, β

318.844° · 62.838°

HTM-20 index

2010802829