Key parameters at a glance

A radius of 11.40 Earth radii
A mass of 206.59 Earth masses
Surface gravity around 1.59 g
An orbital period of 6.907 days
Equilibrium temperature 1,676 K (1403 °C)
Distance from Earth 2,571.14 light-years
Earth Similarity Index 0.081
Travel time at Voyager 1 speed 45,342,108 years

TOI-2184 b Planet Profile

Physical Specs

Radius

11.40 R⊕

Radius (Jupiter)

1.017 R♃

Mass

206.59 M⊕

Mass (Jupiter)

0.650 M♃

Density

0.76 g/cm³

Surface Gravity

1.59 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.081

HZ Position Inner

Controversial No

Discovery

Year 2022

Method Transit

Facility Transiting Exoplanet Survey Satellite (TESS)

Telescope 0.1 m TESS Telescope

Size rank in cohort

Rank by radius

#1607of 1771

top 90.7%

This planet

11.40R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

TOI-3235 b 11.40 R⊕ TOI-199 c 11.40 R⊕ KMT-2019-BLG-2974L b 11.40 R⊕

Metric	Earth	TOI-2184 b	Jupiter
Radius (R⊕)	1.00	11.40	11.21
Mass (M⊕)	1.00	206.59	317.83
Density (g/cm³)	5.51	0.76	1.33
Surface Gravity (g)	1.00	1.59	2.53
Insolation (S⊕)	1.00	1,429.00	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	206.588 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 176956893

Gaia DR2

Gaia DR2 5280444557068991616

Gaia DR3

Gaia DR3 5280444557068991616

System

TOI-2184

Percentile among Gas Giant cohort

Radius 11.400 R⊕ · percentile 9 / cohort 1771

Mass 206.588 M⊕ · percentile 21 / cohort 1747

Orbital period 6.91 d · percentile 41 / cohort 1533

Distance 788.32 pc · percentile 83 / cohort 1759

ESI 0.081 · percentile 19 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

6.907 days

Semi-major axis

— AU

Eccentricity

0.080

Inclination

— °

Year Length

A year here lasts approximately 6.91 Earth days (1.9% of a terrestrial year) on a nearly circular orbit.

Transit Fingerprint

Depth

0.175 %

Duration

6.780 h

Impact parameter b

0.670

Rp / R★

0.034200

Transit midpoint (BJD)

2,458,332.1260

Photometric dip

Transit produces a flux drop of 1,752 ppm lasting ≈ 6.78 h.

Extended Orbital Architecture

Planet / star radius ratio

0.034200

Impact parameter (b)

0.670

RV semi-amplitude (K)

53.400 m/s

Transit mid-time (BJD)

2,458,332.1260

Long. of periastron (ω)

54.00°

Eq. Temperature

1,676K

(1403 °C)

Insolation (S⊕)

1,429.00

Earth = 1.00

Earth Similarity (ESI)

0.081

0 = alien, 1 = Earth-identical

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

Detection Signatures

Transit photometry

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

Radial velocity

Stellar wobble has been measured spectroscopically.

Discovery Paper

Primary reference

Saunders et al. 2022

Instrument

TESS CCD Array

Publication

2022-02

Observation locale

Space

Discovery cohort

Planets confirmed in 2022 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).

TOI-1452 b · Super-Earth TOI-712 d · Sub-Neptune TOI-1468 c · Sub-Neptune TOI-2136 b · Sub-Neptune LTT 1445 A c · Rocky Terrestrial TOI-712 c · Sub-Neptune LP 890-9 b · Super-Earth TOI-2081 b · Sub-Neptune GJ 3929 b · Rocky Terrestrial HD 260655 c · Super-Earth HD 73583 c · Sub-Neptune TOI-1759 b · Sub-Neptune

Host System: TOI-2184

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,966 K — hotter than the Sun (5,778 K)

Estimated Age

2.30 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

2.900 R☉

Stellar Mass

1.530 M☉

Metallicity [Fe/H]

0.14

Extended Stellar Properties

Surface gravity (log g)

3.700 dex

Stellar density

0.089 g/cm³

Rotational v·sin i

7.50 km/s

Metallicity ratio

[Fe/H]

Distance

788.32 parsec

Light-years 2,571.14 ly

V-band magnitude

12.25 mag

Voyager-speed travel 45,342,108 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

1.240 mas

Total Proper Motion

5.061 mas/yr

PM Right Ascension

2.33 mas/yr

PM Declination

4.49 mas/yr

Galactic Cartesian (pc)

x = -0.074 · y = 0.385 · z = -0.920

Equatorial (J2000)

RA 100.83312° · Dec -66.94766°

Galactic ℓ, b

277.218° · -25.588°

Ecliptic λ, β

190.131° · -85.712°

HTM-20 index

-1699216721