Key parameters at a glance

A radius of 14.91 Earth radii
A mass of 181.16 Earth masses
Surface gravity around 0.82 g
An orbital period of 5.182 days
Semi-major axis 0.0627 AU
Equilibrium temperature 1,480 K (1207 °C)
Distance from Earth 2,163.17 light-years
Earth Similarity Index 0.075
Travel time at Voyager 1 speed 38,147,460 years

WASP-184 b Planet Profile

Physical Specs

Radius

14.91 R⊕

Radius (Jupiter)

1.330 R♃

Mass

181.16 M⊕

Mass (Jupiter)

0.570 M♃

Density

0.32 g/cm³

Surface Gravity

0.82 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.075

HZ Position Inner

Controversial No

Discovery

Year 2019

Method Transit

Facility WASP-South

Telescope Canon 200mm f/1.8L

Size rank in cohort

Rank by radius

#237of 1771

top 13.3%

This planet

14.91R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

NGTS-1 b 14.91 R⊕ HATS-41 b 14.91 R⊕ WASP-7 b 14.91 R⊕

Metric	Earth	WASP-184 b	Jupiter
Radius (R⊕)	1.00	14.91	11.21
Mass (M⊕)	1.00	181.16	317.83
Density (g/cm³)	5.51	0.32	1.33
Surface Gravity (g)	1.00	0.82	2.53
Insolation (S⊕)	1.00	669.02	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	181.163 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 112099249

Gaia DR2

Gaia DR2 6173435259395017344

Gaia DR3

Gaia DR3 6173435259395017344

System

WASP-184

Percentile among Gas Giant cohort

Radius 14.908 R⊕ · percentile 86 / cohort 1771

Mass 181.163 M⊕ · percentile 17 / cohort 1747

Orbital period 5.18 d · percentile 37 / cohort 1533

Distance 663.23 pc · percentile 80 / cohort 1759

ESI 0.075 · percentile 16 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

5.182 days

Semi-major axis

0.0627 AU

Eccentricity

0.000

Inclination

86.90 °

Year Length

A year here lasts approximately 5.18 Earth days (1.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0627 AU.

Transit Fingerprint

Depth

0.690 %

Duration

4.776 h

Impact parameter b

0.440

Transit midpoint (BJD)

2,457,630.0080

Photometric dip

Transit produces a flux drop of 6,900 ppm lasting ≈ 4.78 h.

Extended Orbital Architecture

Semi-major axis / stellar radius

8.190

Impact parameter (b)

0.440

RV semi-amplitude (K)

58.000 m/s

Transit mid-time (BJD)

2,457,630.0080

Angular separation (arcsec)

0.09450

Eq. Temperature

1,480K

(1207 °C)

Insolation (S⊕)

669.02

Earth = 1.00

Earth Similarity (ESI)

0.075

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

Hellier et al. 2019

Instrument

iKon-L CCD Camera

Publication

2019-11

Observation locale

Ground

Discovery cohort

Planets confirmed in 2019 at WASP-South (9 shown).

WASP-166 b · Neptune-like WASP-185 b · Gas Giant WASP-171 b · Gas Giant WASP-190 b · Gas Giant WASP-192 b · Gas Giant WASP-182 b · Neptune-like WASP-175 b · Gas Giant WASP-169 b · Gas Giant WASP-178 b · Gas Giant

Host System: WASP-184

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

6,000 K — hotter than the Sun (5,778 K)

Estimated Age

4.70 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.650 R☉

Stellar Mass

1.230 M☉

Metallicity [Fe/H]

0.12

Extended Stellar Properties

Surface gravity (log g)

4.090 dex

Stellar density

0.380 g/cm³

Systemic radial velocity

8.37 km/s

Rotational v·sin i

4.50 km/s

Metallicity ratio

[Fe/H]

Distance

663.23 parsec

Light-years 2,163.17 ly

V-band magnitude

12.77 mag

Voyager-speed travel 38,147,460 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

1.480 mas

Total Proper Motion

6.701 mas/yr

PM Right Ascension

-4.36 mas/yr

PM Declination

-5.09 mas/yr

Galactic Cartesian (pc)

x = -0.751 · y = -0.425 · z = -0.505

Equatorial (J2000)

RA 209.51701° · Dec -30.34815°

Galactic ℓ, b

319.591° · 30.359°

Ecliptic λ, β

218.201° · -17.124°

HTM-20 index

1274539989