Key parameters at a glance

A radius of 1.57 Earth radii
A mass of 3.09 Earth masses
Surface gravity around 1.25 g
An orbital period of 2.852 days
Semi-major axis 0.0400 AU
Equilibrium temperature 1,607 K (1334 °C)
Distance from Earth 6,311.25 light-years
Earth Similarity Index 0.172
Travel time at Voyager 1 speed 111,298,871 years

1 sibling around Kepler-730

Kepler-730 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
Kepler-730 c this	Super-Earth	1.57	3.09	2.852	1,607	2018
Kepler-730 b	Gas Giant	12.33	—	6.492	1,219	2016

Kepler-730 c Planet Profile

Physical Specs

Radius

1.57 R⊕

Radius (Jupiter)

0.140 R♃

Mass

3.09 M⊕

Mass (Jupiter)

0.010 M♃

Density

4.39 g/cm³

Surface Gravity

1.25 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.172

HZ Position Inner

Controversial No

Discovery

Year 2018

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#630of 1176

top 53.5%

This planet

1.57R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-356 b 1.57 R⊕ Kepler-236 b 1.57 R⊕ Kepler-249 d 1.57 R⊕

Metric	Earth	Kepler-730 c	Jupiter
Radius (R⊕)	1.00	1.57	11.21
Mass (M⊕)	1.00	3.09	317.83
Density (g/cm³)	5.51	4.39	1.33
Surface Gravity (g)	1.00	1.25	2.53
Insolation (S⊕)	1.00	903.77	0.037

Star Catalogue Identifiers

TIC

TIC 352013543

Gaia DR2

Gaia DR2 2106412082639238400

Gaia DR3

Gaia DR3 2106412082639238400

System

Kepler-730

Percentile among Super-Earth cohort

Radius 1.569 R⊕ · percentile 46 / cohort 1176

Mass 3.090 M⊕ · percentile 42 / cohort 1176

Orbital period 2.85 d · percentile 20 / cohort 1164

Distance 1,935.04 pc · percentile 98 / cohort 1171

ESI 0.172 · percentile 8 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

2.852 days

Semi-major axis

0.0400 AU

Eccentricity

0.000

Inclination

83.81 °

Year Length

A year here lasts approximately 2.85 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0400 AU.

Transit Fingerprint

Depth

0.011 %

Duration

2.760 h

Impact parameter b

0.659

Rp / R★

0.010250

Transit midpoint (BJD)

2,454,965.1455

Photometric dip

Transit produces a flux drop of 115 ppm lasting ≈ 2.76 h.

Extended Orbital Architecture

Planet / star radius ratio

0.010250

Semi-major axis / stellar radius

6.100

Impact parameter (b)

0.659

Transit mid-time (BJD)

2,454,965.1455

Angular separation (arcsec)

0.02070

Eq. Temperature

1,607K

(1334 °C)

Insolation (S⊕)

903.77

Earth = 1.00

Earth Similarity (ESI)

0.172

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

Discovery Paper

Primary reference

Ca Ntilde As et al. 2019

Instrument

Kepler CCD Array

Publication

2019-01

Observation locale

Space

Discovery cohort

Planets confirmed in 2018 at Kepler (6 shown).

Kepler-411 d · Sub-Neptune KOI-3680 b · Gas Giant Kepler-411 e · Sub-Neptune Kepler-1654 b · Neptune-like Kepler-1656 b · Neptune-like Kepler-1655 b · Sub-Neptune

Host System: Kepler-730

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,620 K — cooler than the Sun (5,778 K)

Estimated Age

9.50 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.411 R☉

Stellar Mass

1.047 M☉

Metallicity [Fe/H]

0.21

Extended Stellar Properties

Surface gravity (log g)

4.162 dex

Stellar density

0.529 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,935.04 parsec

Light-years 6,311.25 ly

V-band magnitude

15.78 mag

Voyager-speed travel 111,298,871 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.487 mas

Total Proper Motion

5.483 mas/yr

PM Right Ascension

-5.28 mas/yr

PM Declination

-1.49 mas/yr

Galactic Cartesian (pc)

x = 0.188 · y = -0.674 · z = 0.714

Equatorial (J2000)

RA 285.55479° · Dec 45.57884°

Galactic ℓ, b

75.874° · 17.240°

Ecliptic λ, β

299.290° · 67.443°

HTM-20 index

-1220281494