Key parameters at a glance

A radius of 3.53 Earth radii
A mass of 12.20 Earth masses
Surface gravity around 0.98 g
An orbital period of 11.964 days
Semi-major axis 0.0997 AU
Equilibrium temperature 808 K (535 °C)
Distance from Earth 4,580.47 light-years
Earth Similarity Index 0.272
Travel time at Voyager 1 speed 80,776,577 years

Kepler-1835 b Planet Profile

Physical Specs

Radius

3.53 R⊕

Radius (Jupiter)

0.315 R♃

Mass

12.20 M⊕

Mass (Jupiter)

0.039 M♃

Density

1.52 g/cm³

Surface Gravity

0.98 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.272

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

#163of 1978

top 8.2%

This planet

3.53R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-359 b 3.53 R⊕ K2-285 c 3.53 R⊕ Kepler-1038 b 3.53 R⊕

Metric	Earth	Kepler-1835 b	Jupiter
Radius (R⊕)	1.00	3.53	11.21
Mass (M⊕)	1.00	12.20	317.83
Density (g/cm³)	5.51	1.52	1.33
Surface Gravity (g)	1.00	0.98	2.53
Insolation (S⊕)	1.00	100.96	0.037

Star Catalogue Identifiers

TIC

TIC 351799800

Gaia DR2

Gaia DR2 2116970280483501952

Gaia DR3

Gaia DR3 2116970280483501952

System

Kepler-1835

Percentile among Sub-Neptune cohort

Radius 3.534 R⊕ · percentile 92 / cohort 1978

Mass 12.200 M⊕ · percentile 84 / cohort 1978

Orbital period 11.96 d · percentile 41 / cohort 1946

Distance 1,404.38 pc · percentile 92 / cohort 1975

ESI 0.272 · percentile 21 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

11.964 days

Semi-major axis

0.0997 AU

Eccentricity

0.000

Inclination

84.85 °

Year Length

A year here lasts approximately 11.96 Earth days (3.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0997 AU.

Transit Fingerprint

Depth

0.078 %

Duration

4.526 h

Impact parameter b

0.055

Rp / R★

0.026041

Transit midpoint (BJD)

2,454,966.1580

Photometric dip

Transit produces a flux drop of 784 ppm lasting ≈ 4.53 h.

Extended Orbital Architecture

Planet / star radius ratio

0.026041

Semi-major axis / stellar radius

23.290

Impact parameter (b)

0.055

Transit mid-time (BJD)

2,454,966.1580

Angular separation (arcsec)

0.07100

Eq. Temperature

808K

(535 °C)

Insolation (S⊕)

100.96

Earth = 1.00

Earth Similarity (ESI)

0.272

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-1835

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,903 K — hotter than the Sun (5,778 K)

Estimated Age

4.80 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.961 R☉

Stellar Mass

0.922 M☉

Metallicity [Fe/H]

-0.26

Extended Stellar Properties

Surface gravity (log g)

4.437 dex

Stellar density

0.134 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,404.38 parsec

Light-years 4,580.47 ly

V-band magnitude

15.62 mag

Voyager-speed travel 80,776,577 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.683 mas

Total Proper Motion

15.937 mas/yr

PM Right Ascension

-14.37 mas/yr

PM Declination

-6.90 mas/yr

Galactic Cartesian (pc)

x = 0.129 · y = -0.708 · z = 0.694

Equatorial (J2000)

RA 280.31482° · Dec 43.98569°

Galactic ℓ, b

72.949° · 20.188°

Ecliptic λ, β

289.040° · 66.744°

HTM-20 index

-939653226