Key parameters at a glance

A radius of 3.33 Earth radii
A mass of 11.10 Earth masses
Surface gravity around 1.00 g
An orbital period of 56.493 days
Semi-major axis 0.3177 AU
Equilibrium temperature 681 K (408 °C)
Distance from Earth 3,447.08 light-years
Earth Similarity Index 0.332
Travel time at Voyager 1 speed 60,789,209 years

Kepler-1830 b Planet Profile

Physical Specs

Radius

3.33 R⊕

Radius (Jupiter)

0.297 R♃

Mass

11.10 M⊕

Mass (Jupiter)

0.035 M♃

Density

1.65 g/cm³

Surface Gravity

1.00 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.332

HZ Position Inner

Controversial No

Discovery

Year 2021

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#266of 1978

top 13.4%

This planet

3.33R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-11 g 3.33 R⊕ GJ 674 b 3.33 R⊕ Kepler-264 b 3.33 R⊕

Metric	Earth	Kepler-1830 b	Jupiter
Radius (R⊕)	1.00	3.33	11.21
Mass (M⊕)	1.00	11.10	317.83
Density (g/cm³)	5.51	1.65	1.33
Surface Gravity (g)	1.00	1.00	2.53
Insolation (S⊕)	1.00	35.80	0.037

Star Catalogue Identifiers

TIC

TIC 138968107

Gaia DR2

Gaia DR2 2076662871411824128

Gaia DR3

Gaia DR3 2076662871411824128

System

Kepler-1830

Percentile among Sub-Neptune cohort

Radius 3.330 R⊕ · percentile 87 / cohort 1978

Mass 11.100 M⊕ · percentile 80 / cohort 1978

Orbital period 56.49 d · percentile 88 / cohort 1946

Distance 1,056.88 pc · percentile 81 / cohort 1975

ESI 0.332 · percentile 36 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

56.493 days

Semi-major axis

0.3177 AU

Eccentricity

0.000

Inclination

88.89 °

Year Length

A year here lasts approximately 56.49 Earth days (15.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.3177 AU.

Transit Fingerprint

Depth

0.039 %

Duration

8.473 h

Impact parameter b

0.800

Rp / R★

0.018010

Transit midpoint (BJD)

2,454,976.9924

Photometric dip

Transit produces a flux drop of 388 ppm lasting ≈ 8.47 h.

Extended Orbital Architecture

Planet / star radius ratio

0.018010

Semi-major axis / stellar radius

31.800

Impact parameter (b)

0.800

Transit mid-time (BJD)

2,454,976.9924

Angular separation (arcsec)

0.30100

Eq. Temperature

681K

(408 °C)

Insolation (S⊕)

35.80

Earth = 1.00

Earth Similarity (ESI)

0.332

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

Valizadegan et al. 2022

Instrument

Kepler CCD Array

Publication

2022-02

Observation locale

Space

Discovery cohort

Planets confirmed in 2021 at Kepler (12 shown).

Kepler-1816 b · Super-Earth Kepler-1705 c · Sub-Neptune Kepler-1948 b · Rocky Terrestrial Kepler-196 d · Sub-Neptune Kepler-1853 b · Super-Earth Kepler-1840 b · Sub-Neptune Kepler-1881 b · Sub-Neptune Kepler-1858 b · Sub-Neptune Kepler-1874 b · Sub-Neptune Kepler-1802 c · Sub-Neptune Kepler-1749 b · Super-Earth Kepler-1849 b · Sub-Neptune

Host System: Kepler-1830

Spectral Class

F-type yellow-white

Effective Temperature

6,160 K — hotter than the Sun (5,778 K)

Estimated Age

2.40 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

2.046 R☉

Stellar Mass

1.443 M☉

Metallicity [Fe/H]

0.24

Extended Stellar Properties

Surface gravity (log g)

3.976 dex

Stellar density

0.287 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,056.88 parsec

Light-years 3,447.08 ly

V-band magnitude

13.61 mag

Voyager-speed travel 60,789,209 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.918 mas

Total Proper Motion

7.149 mas/yr

PM Right Ascension

-0.72 mas/yr

PM Declination

-7.11 mas/yr

Galactic Cartesian (pc)

x = 0.321 · y = -0.683 · z = 0.656

Equatorial (J2000)

RA 295.13904° · Dec 40.97905°

Galactic ℓ, b

74.615° · 8.982°

Ecliptic λ, β

311.209° · 60.871°

HTM-20 index

1563938283