Key parameters at a glance

A radius of 3.64 Earth radii
A mass of 12.80 Earth masses
Surface gravity around 0.97 g
An orbital period of 9.230 days
Semi-major axis 0.0933 AU
Equilibrium temperature 1,021 K (748 °C)
Distance from Earth 6,785.71 light-years
Earth Similarity Index 0.210
Travel time at Voyager 1 speed 119,665,957 years

Kepler-1733 b Planet Profile

Physical Specs

Radius

3.64 R⊕

Radius (Jupiter)

0.324 R♃

Mass

12.80 M⊕

Mass (Jupiter)

0.040 M♃

Density

1.46 g/cm³

Surface Gravity

0.97 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.210

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

#126of 1978

top 6.3%

This planet

3.64R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1635 b 3.64 R⊕ Kepler-608 b 3.64 R⊕ Kepler-565 b 3.64 R⊕

Metric	Earth	Kepler-1733 b	Jupiter
Radius (R⊕)	1.00	3.64	11.21
Mass (M⊕)	1.00	12.80	317.83
Density (g/cm³)	5.51	1.46	1.33
Surface Gravity (g)	1.00	0.97	2.53
Insolation (S⊕)	1.00	257.11	0.037

Star Catalogue Identifiers

TIC

TIC 122781795

Gaia DR2

Gaia DR2 2052549584977429504

Gaia DR3

Gaia DR3 2052549584977429504

System

Kepler-1733

Percentile among Sub-Neptune cohort

Radius 3.636 R⊕ · percentile 94 / cohort 1978

Mass 12.800 M⊕ · percentile 87 / cohort 1978

Orbital period 9.23 d · percentile 31 / cohort 1946

Distance 2,080.51 pc · percentile 98 / cohort 1975

ESI 0.210 · percentile 8 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

9.230 days

Semi-major axis

0.0933 AU

Eccentricity

0.000

Inclination

89.88 °

Year Length

A year here lasts approximately 9.23 Earth days (2.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0933 AU.

Transit Fingerprint

Depth

0.049 %

Duration

2.235 h

Impact parameter b

0.047

Rp / R★

0.020371

Transit midpoint (BJD)

2,454,971.4396

Photometric dip

Transit produces a flux drop of 492 ppm lasting ≈ 2.24 h.

Extended Orbital Architecture

Planet / star radius ratio

0.020371

Semi-major axis / stellar radius

32.120

Impact parameter (b)

0.047

Transit mid-time (BJD)

2,454,971.4396

Angular separation (arcsec)

0.04480

Eq. Temperature

1,021K

(748 °C)

Insolation (S⊕)

257.11

Earth = 1.00

Earth Similarity (ESI)

0.210

0 = alien, 1 = Earth-identical

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

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-1733

Spectral Class

F-type yellow-white

Effective Temperature

6,320 K — hotter than the Sun (5,778 K)

Estimated Age

0.20 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.252 R☉

Stellar Mass

1.273 M☉

Metallicity [Fe/H]

0.24

Extended Stellar Properties

Surface gravity (log g)

4.347 dex

Stellar density

7.359 g/cm³

Metallicity ratio

[Fe/H]

Distance

2,080.51 parsec

Light-years 6,785.71 ly

V-band magnitude

15.61 mag

Voyager-speed travel 119,665,957 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

0.453 mas

Total Proper Motion

7.407 mas/yr

PM Right Ascension

-3.70 mas/yr

PM Declination

-6.42 mas/yr

Galactic Cartesian (pc)

x = 0.285 · y = -0.736 · z = 0.614

Equatorial (J2000)

RA 291.13846° · Dec 37.85924°

Galactic ℓ, b

70.364° · 10.292°

Ecliptic λ, β

303.414° · 58.871°

HTM-20 index

1994445406