Key parameters at a glance

A radius of 13.90 Earth radii
A mass of 286.05 Earth masses
Surface gravity around 1.48 g
An orbital period of 3.409 days
Semi-major axis 0.0480 AU
Equilibrium temperature 1,540 K (1267 °C)
Distance from Earth 828.39 light-years
Earth Similarity Index 0.082
Travel time at Voyager 1 speed 14,608,610 years

WASP-180 A b Planet Profile

Physical Specs

Radius

13.90 R⊕

Radius (Jupiter)

1.240 R♃

Mass

286.05 M⊕

Mass (Jupiter)

0.900 M♃

Density

0.61 g/cm³

Surface Gravity

1.48 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.082

HZ Position Inner

Controversial No

Discovery

Year 2019

Method Transit

Facility SuperWASP

Telescope Canon 200mm f/1.8L

Size rank in cohort

Rank by radius

#501of 1771

top 28.2%

This planet

13.90R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

WASP-124 b 13.90 R⊕ WASP-85 A b 13.90 R⊕ NGTS-17 b 13.90 R⊕

Metric	Earth	WASP-180 A b	Jupiter
Radius (R⊕)	1.00	13.90	11.21
Mass (M⊕)	1.00	286.05	317.83
Density (g/cm³)	5.51	0.61	1.33
Surface Gravity (g)	1.00	1.48	2.53
Insolation (S⊕)	1.00	918.39	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	286.047 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 178367144

Gaia DR2

Gaia DR2 3070964117005132416

Gaia DR3

Gaia DR3 3070964117005132416

System

WASP-180

Percentile among Gas Giant cohort

Radius 13.899 R⊕ · percentile 72 / cohort 1771

Mass 286.047 M⊕ · percentile 32 / cohort 1747

Orbital period 3.41 d · percentile 22 / cohort 1533

Distance 253.99 pc · percentile 56 / cohort 1759

ESI 0.082 · percentile 19 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

3.409 days

Semi-major axis

0.0480 AU

Eccentricity

0.000

Inclination

88.10 °

Year Length

A year here lasts approximately 3.41 Earth days (0.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0480 AU.

Transit Fingerprint

Depth

1.230 %

Duration

3.118 h

Impact parameter b

0.290

Rp / R★

0.110910

Transit midpoint (BJD)

2,457,763.3150

Photometric dip

Transit produces a flux drop of 12,300 ppm lasting ≈ 3.12 h.

Extended Orbital Architecture

Planet / star radius ratio

0.110910

Semi-major axis / stellar radius

8.750

Impact parameter (b)

0.290

RV semi-amplitude (K)

100.000 m/s

Transit mid-time (BJD)

2,457,763.3150

Sky-projected obliquity (λ)

-157.00°

Angular separation (arcsec)

0.18900

Eq. Temperature

1,540K

(1267 °C)

Insolation (S⊕)

918.39

Earth = 1.00

Earth Similarity (ESI)

0.082

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

Temple et al. 2019

Instrument

iKon-L CCD Camera

Publication

2019-12

Observation locale

Ground

Discovery cohort

Planets confirmed in 2019 at SuperWASP (3 shown).

WASP-181 b · Gas Giant WASP-183 b · Gas Giant WASP-177 b · Gas Giant

Host System: WASP-180 A

Spectral Class

F-type yellow-white

Effective Temperature

6,600 K — hotter than the Sun (5,778 K)

Estimated Age

1.20 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.190 R☉

Stellar Mass

1.300 M☉

Metallicity [Fe/H]

0.10

Extended Stellar Properties

Surface gravity (log g)

4.420 dex

Stellar density

1.170 g/cm³

Systemic radial velocity

28.90 km/s

Rotational v·sin i

19.90 km/s

Rotation period

3.30 days

Metallicity ratio

[Fe/H]

Distance

253.99 parsec

Light-years 828.39 ly

V-band magnitude

10.66 mag

Voyager-speed travel 14,608,610 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

3.909 mas

Total Proper Motion

14.405 mas/yr

PM Right Ascension

-14.05 mas/yr

PM Declination

-3.17 mas/yr

Galactic Cartesian (pc)

x = -0.550 · y = 0.834 · z = -0.035

Equatorial (J2000)

RA 123.39225° · Dec -1.98279°

Galactic ℓ, b

224.445° · 17.229°

Ecliptic λ, β

126.186° · -21.325°

HTM-20 index

1045082201