Key parameters at a glance

A radius of 10.95 Earth radii
A mass of 287.32 Earth masses
Surface gravity around 2.40 g
An orbital period of 11.913 days
Semi-major axis 0.0956 AU
Equilibrium temperature 652 K (379 °C)
Distance from Earth 769.51 light-years
Earth Similarity Index 0.244
Travel time at Voyager 1 speed 13,570,302 years
Almost certainly tidally locked to its host star given the close orbit

1 sibling around TOI-2202

TOI-2202 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
TOI-2202 b this	Gas Giant	10.95	287.32	11.913	652	2021
TOI-2202 c	Gas Giant	13.40	117.28	24.674	—	2021

TOI-2202 b Planet Profile

Physical Specs

Radius

10.95 R⊕

Radius (Jupiter)

0.977 R♃

Mass

287.32 M⊕

Mass (Jupiter)

0.904 M♃

Density

1.20 g/cm³

Surface Gravity

2.40 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.244

HZ Position Inner

Controversial No

Discovery

Year 2021

Method Transit

Facility Transiting Exoplanet Survey Satellite (TESS)

Telescope 0.1 m TESS Telescope

Size rank in cohort

Rank by radius

#1668of 1771

top 94.1%

This planet

10.95R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Kepler-425 b 10.96 R⊕ TOI-1232 b 10.93 R⊕ TOI-2567 b 10.93 R⊕

Metric	Earth	TOI-2202 b	Jupiter
Radius (R⊕)	1.00	10.95	11.21
Mass (M⊕)	1.00	287.32	317.83
Density (g/cm³)	5.51	1.20	1.33
Surface Gravity (g)	1.00	2.40	2.53
Insolation (S⊕)	1.00	42.73	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	287.317 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 358107516

Gaia DR2

Gaia DR2 4641274773980363520

Gaia DR3

Gaia DR3 4641274773980363520

System

TOI-2202

Percentile among Gas Giant cohort

Radius 10.951 R⊕ · percentile 6 / cohort 1771

Mass 287.317 M⊕ · percentile 32 / cohort 1747

Orbital period 11.91 d · percentile 46 / cohort 1533

Distance 235.93 pc · percentile 55 / cohort 1759

ESI 0.244 · percentile 42 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

11.913 days

Semi-major axis

0.0956 AU

Eccentricity

0.022

Inclination

89.29 °

Year Length

A year here lasts approximately 11.91 Earth days (3.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0956 AU.

Transit Fingerprint

Depth

1.930 %

Duration

3.768 h

Impact parameter b

0.323

Rp / R★

0.126500

Transit midpoint (BJD)

2,459,577.9736

Photometric dip

Transit produces a flux drop of 19,304 ppm lasting ≈ 3.77 h.

Extended Orbital Architecture

Planet / star radius ratio

0.126500

Semi-major axis / stellar radius

25.980

Impact parameter (b)

0.323

RV semi-amplitude (K)

90.700 m/s

Transit mid-time (BJD)

2,459,577.9736

Long. of periastron (ω)

212.00°

Sky-projected obliquity (λ)

26.00°

True obliquity (ψ)

31.00°

Angular separation (arcsec)

0.40500

Eq. Temperature

652K

(379 °C)

Insolation (S⊕)

42.73

Earth = 1.00

Earth Similarity (ESI)

0.244

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.

Detection Signatures

Transit photometry

A transit dip has been observed from at least one telescope.

Radial velocity

Stellar wobble has been measured spectroscopically.

Transit timing variations

Gravitational interactions from neighbours have been detected.

Discovery Paper

Primary reference

Trifonov et al. 2021

Instrument

TESS CCD Array

Publication

2021-12

Observation locale

Space

Discovery cohort

Planets confirmed in 2021 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).

TOI-2257 b · Sub-Neptune TOI-2285 b · Super-Earth TOI-1231 b · Sub-Neptune AU Mic c · Sub-Neptune LHS 1678 c · Rocky Terrestrial LHS 1478 b · Rocky Terrestrial TOI-2406 b · Sub-Neptune HD 207897 b · Sub-Neptune TOI-269 b · Sub-Neptune TIC 172900988 b · Gas Giant TOI-178 g · Sub-Neptune TOI-2076 d · Sub-Neptune

Host System: TOI-2202

Spectral Class

K-type orange

Effective Temperature

5,169 K — cooler than the Sun (5,778 K)

Estimated Age

6.40 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.808 R☉

Stellar Mass

0.841 M☉

Metallicity [Fe/H]

0.06

Extended Stellar Properties

Surface gravity (log g)

4.548 dex

Stellar density

2.143 g/cm³

Rotational v·sin i

2.14 km/s

Rotation period

22.00 days

Metallicity ratio

[Fe/H]

Distance

235.93 parsec

Light-years 769.51 ly

V-band magnitude

13.00 mag

Voyager-speed travel 13,570,302 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

4.210 mas

Total Proper Motion

12.610 mas/yr

PM Right Ascension

-10.81 mas/yr

PM Declination

6.49 mas/yr

Galactic Cartesian (pc)

x = 0.173 · y = 0.215 · z = -0.961

Equatorial (J2000)

RA 51.22842° · Dec -73.95755°

Galactic ℓ, b

290.157° · -39.128°

Ecliptic λ, β

313.146° · -75.343°

HTM-20 index

900771409

Similar Worlds

Kepler-425 b

Gas Giant · K-type orange

Radius 10.96 R⊕ · 2,109.1 ly

KMT-2023-BLG-0119L b

Gas Giant · K-type orange

Radius 11.00 R⊕ · 17,645.0 ly

NGTS-35 b

Gas Giant · K-type orange

Radius 10.90 R⊕ · 597.1 ly

CoRoT-10 b

Gas Giant · K-type orange

Radius 10.87 R⊕ · 1,103.7 ly

TOI-4504 c

Gas Giant · K-type orange

Radius 11.10 R⊕ · 1,117.4 ly

WASP-23 b

Gas Giant · K-type orange

Radius 10.78 R⊕ · 676.7 ly

Explore Related Categories

Gas Giant Planets Transit Discoveries Transiting Exoplanet Survey Satellite (TESS) Mission K-type orange Hosts