Key parameters at a glance

A radius of 3.14 Earth radii
A mass of 10.00 Earth masses
Surface gravity around 1.01 g
An orbital period of 31.589 days
Semi-major axis 0.2099 AU
Equilibrium temperature 682 K (409 °C)
Distance from Earth 3,490.42 light-years
Earth Similarity Index 0.339
Travel time at Voyager 1 speed 61,553,618 years

Kepler-1790 b Planet Profile

Physical Specs

Radius

3.14 R⊕

Radius (Jupiter)

0.281 R♃

Mass

10.00 M⊕

Mass (Jupiter)

0.032 M♃

Density

1.77 g/cm³

Surface Gravity

1.01 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.339

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

#398of 1978

top 20.1%

This planet

3.14R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

TOI-1716.01 3.14 R⊕ TOI-2141 b 3.15 R⊕ Kepler-218 c 3.14 R⊕

Metric	Earth	Kepler-1790 b	Jupiter
Radius (R⊕)	1.00	3.14	11.21
Mass (M⊕)	1.00	10.00	317.83
Density (g/cm³)	5.51	1.77	1.33
Surface Gravity (g)	1.00	1.01	2.53
Insolation (S⊕)	1.00	49.20	0.037

Star Catalogue Identifiers

TIC

TIC 271164778

Gaia DR2

Gaia DR2 2080062664440262784

Gaia DR3

Gaia DR3 2080062664440262784

System

Kepler-1790

Percentile among Sub-Neptune cohort

Radius 3.145 R⊕ · percentile 80 / cohort 1978

Mass 10.000 M⊕ · percentile 73 / cohort 1978

Orbital period 31.59 d · percentile 75 / cohort 1946

Distance 1,070.17 pc · percentile 82 / cohort 1975

ESI 0.339 · percentile 38 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

31.589 days

Semi-major axis

0.2099 AU

Eccentricity

0.000

Inclination

89.84 °

Year Length

A year here lasts approximately 31.59 Earth days (8.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2099 AU.

Transit Fingerprint

Depth

0.036 %

Duration

3.403 h

Impact parameter b

0.194

Rp / R★

0.017976

Transit midpoint (BJD)

2,454,988.6162

Photometric dip

Transit produces a flux drop of 361 ppm lasting ≈ 3.40 h.

Extended Orbital Architecture

Planet / star radius ratio

0.017976

Semi-major axis / stellar radius

70.100

Impact parameter (b)

0.194

Transit mid-time (BJD)

2,454,988.6162

Angular separation (arcsec)

0.19600

Eq. Temperature

682K

(409 °C)

Insolation (S⊕)

49.20

Earth = 1.00

Earth Similarity (ESI)

0.339

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-1790

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,866 K — hotter than the Sun (5,778 K)

Estimated Age

2.88 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.367 R☉

Stellar Mass

1.020 M☉

Metallicity [Fe/H]

0.00

Extended Stellar Properties

Surface gravity (log g)

4.175 dex

Stellar density

6.533 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,070.17 parsec

Light-years 3,490.42 ly

V-band magnitude

14.18 mag

Voyager-speed travel 61,553,618 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.906 mas

Total Proper Motion

18.644 mas/yr

PM Right Ascension

-6.36 mas/yr

PM Declination

-17.53 mas/yr

Galactic Cartesian (pc)

x = 0.288 · y = -0.631 · z = 0.720

Equatorial (J2000)

RA 294.56686° · Dec 46.07573°

Galactic ℓ, b

79.005° · 11.721°

Ecliptic λ, β

314.608° · 65.753°

HTM-20 index

-1237022836