Key parameters at a glance

A radius of 2.75 Earth radii
A mass of 8.00 Earth masses
Surface gravity around 1.06 g
An orbital period of 29.456 days
Semi-major axis 0.1879 AU
Equilibrium temperature 598 K (325 °C)
Distance from Earth 2,693.67 light-years
Earth Similarity Index 0.406
Travel time at Voyager 1 speed 47,502,814 years

Kepler-1796 b Planet Profile

Physical Specs

Radius

2.75 R⊕

Radius (Jupiter)

0.245 R♃

Mass

8.00 M⊕

Mass (Jupiter)

0.025 M♃

Density

2.11 g/cm³

Surface Gravity

1.06 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.406

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

#803of 1978

top 40.5%

This planet

2.75R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

TOI-2545 b 2.75 R⊕ HIP 97166 c 2.75 R⊕ Kepler-304 d 2.75 R⊕

Metric	Earth	Kepler-1796 b	Jupiter
Radius (R⊕)	1.00	2.75	11.21
Mass (M⊕)	1.00	8.00	317.83
Density (g/cm³)	5.51	2.11	1.33
Surface Gravity (g)	1.00	1.06	2.53
Insolation (S⊕)	1.00	30.30	0.037

Star Catalogue Identifiers

TIC

TIC 185336831

Gaia DR2

Gaia DR2 2081915204099064960

Gaia DR3

Gaia DR3 2081915204099064960

System

Kepler-1796

Percentile among Sub-Neptune cohort

Radius 2.750 R⊕ · percentile 59 / cohort 1978

Mass 8.000 M⊕ · percentile 54 / cohort 1978

Orbital period 29.46 d · percentile 73 / cohort 1946

Distance 825.88 pc · percentile 67 / cohort 1975

ESI 0.406 · percentile 53 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

29.456 days

Semi-major axis

0.1879 AU

Eccentricity

0.000

Inclination

89.98 °

Year Length

A year here lasts approximately 29.46 Earth days (8.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1879 AU.

Transit Fingerprint

Depth

0.053 %

Duration

3.451 h

Impact parameter b

0.018

Rp / R★

0.021308

Transit midpoint (BJD)

2,454,987.1706

Photometric dip

Transit produces a flux drop of 534 ppm lasting ≈ 3.45 h.

Extended Orbital Architecture

Planet / star radius ratio

0.021308

Semi-major axis / stellar radius

66.580

Impact parameter (b)

0.018

Transit mid-time (BJD)

2,454,987.1706

Angular separation (arcsec)

0.22800

Eq. Temperature

598K

(325 °C)

Insolation (S⊕)

30.30

Earth = 1.00

Earth Similarity (ESI)

0.406

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-1796

Spectral Class

F-type yellow-white

Effective Temperature

6,036 K — hotter than the Sun (5,778 K)

Estimated Age

0.40 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.949 R☉

Stellar Mass

1.018 M☉

Metallicity [Fe/H]

-0.16

Extended Stellar Properties

Surface gravity (log g)

4.491 dex

Stellar density

6.435 g/cm³

Metallicity ratio

[Fe/H]

Distance

825.88 parsec

Light-years 2,693.67 ly

V-band magnitude

14.49 mag

Voyager-speed travel 47,502,814 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.182 mas

Total Proper Motion

11.081 mas/yr

PM Right Ascension

11.08 mas/yr

PM Declination

0.05 mas/yr

Galactic Cartesian (pc)

x = 0.372 · y = -0.607 · z = 0.702

Equatorial (J2000)

RA 301.54304° · Dec 44.60563°

Galactic ℓ, b

80.157° · 6.732°

Ecliptic λ, β

323.321° · 62.330°

HTM-20 index

-1800655454