Key parameters at a glance

A radius of 13.90 Earth radii
A mass of 190.70 Earth masses
Surface gravity around 0.99 g
An orbital period of 3.373 days
Semi-major axis 0.0449 AU
Equilibrium temperature 1,400 K (1127 °C)
Distance from Earth 1,463.26 light-years
Earth Similarity Index 0.086
Travel time at Voyager 1 speed 25,804,527 years

WASP-124 b Planet Profile

Physical Specs

Radius

13.90 R⊕

Radius (Jupiter)

1.240 R♃

Mass

190.70 M⊕

Mass (Jupiter)

0.600 M♃

Density

0.43 g/cm³

Surface Gravity

0.99 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.086

HZ Position Inner

Controversial No

Discovery

Year 2016

Method Transit

Facility SuperWASP-South

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-180 A b 13.90 R⊕ WASP-85 A b 13.90 R⊕ NGTS-17 b 13.90 R⊕

Metric	Earth	WASP-124 b	Jupiter
Radius (R⊕)	1.00	13.90	11.21
Mass (M⊕)	1.00	190.70	317.83
Density (g/cm³)	5.51	0.43	1.33
Surface Gravity (g)	1.00	0.99	2.53
Insolation (S⊕)	1.00	748.00	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	190.698 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 97409519

Gaia DR2

Gaia DR2 6614751532833886464

Gaia DR3

Gaia DR3 6614751532833886464

System

WASP-124

Percentile among Gas Giant cohort

Radius 13.899 R⊕ · percentile 72 / cohort 1771

Mass 190.698 M⊕ · percentile 18 / cohort 1747

Orbital period 3.37 d · percentile 21 / cohort 1533

Distance 448.64 pc · percentile 73 / cohort 1759

ESI 0.086 · percentile 21 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

3.373 days

Semi-major axis

0.0449 AU

Eccentricity

0.017

Inclination

86.30 °

Year Length

A year here lasts approximately 3.37 Earth days (0.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0449 AU.

Transit Fingerprint

Depth

1.716 %

Duration

2.570 h

Impact parameter b

0.610

Rp / R★

0.124100

Transit midpoint (BJD)

2,457,028.5834

Photometric dip

Transit produces a flux drop of 17,164 ppm lasting ≈ 2.57 h.

Extended Orbital Architecture

Planet / star radius ratio

0.124100

Semi-major axis / stellar radius

9.434

Impact parameter (b)

0.610

RV semi-amplitude (K)

77.000 m/s

Transit mid-time (BJD)

2,457,028.5834

Angular separation (arcsec)

0.10000

Eq. Temperature

1,400K

(1127 °C)

Insolation (S⊕)

748.00

Earth = 1.00

Earth Similarity (ESI)

0.086

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

Maxted et al. 2016

Instrument

iKon-L CCD Camera

Publication

2016-06

Observation locale

Ground

Discovery cohort

Planets confirmed in 2016 at SuperWASP-South (11 shown).

WASP-132 b · Gas Giant WASP-130 b · Neptune-like WASP-129 b · Gas Giant WASP-139 b · Neptune-like WASP-140 b · Gas Giant WASP-141 b · Gas Giant WASP-126 b · Gas Giant WASP-119 b · Gas Giant WASP-133 b · Gas Giant WASP-131 b · Gas Giant WASP-142 b · Gas Giant

Host System: WASP-124

Spectral Class

F-type yellow-white

Effective Temperature

6,050 K — hotter than the Sun (5,778 K)

Estimated Age

2.10 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.020 R☉

Stellar Mass

1.070 M☉

Metallicity [Fe/H]

-0.02

Extended Stellar Properties

Surface gravity (log g)

4.440 dex

Stellar density

1.390 g/cm³

Systemic radial velocity

-5.88 km/s

Rotational v·sin i

3.20 km/s

Rotation period

10.65 days

Activity index (log R'HK)

-4.765

Metallicity ratio

[Fe/H]

Distance

448.64 parsec

Light-years 1,463.26 ly

V-band magnitude

12.72 mag

Voyager-speed travel 25,804,527 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

2.201 mas

Total Proper Motion

14.533 mas/yr

PM Right Ascension

-0.71 mas/yr

PM Declination

-14.52 mas/yr

Galactic Cartesian (pc)

x = 0.764 · y = -0.394 · z = -0.511

Equatorial (J2000)

RA 332.71434° · Dec -30.74972°

Galactic ℓ, b

17.257° · -54.866°

Ecliptic λ, β

323.512° · -18.203°

HTM-20 index

1524640792