Key parameters at a glance

A radius of 13.54 Earth radii
A mass of 314.65 Earth masses
Surface gravity around 1.72 g
An orbital period of 3.065 days
Semi-major axis 0.0440 AU
Equilibrium temperature 1,571 K (1298 °C)
Distance from Earth 1,759.16 light-years
Earth Similarity Index 0.083
Travel time at Voyager 1 speed 31,022,697 years

WASP-175 b Planet Profile

Physical Specs

Radius

13.54 R⊕

Radius (Jupiter)

1.208 R♃

Mass

314.65 M⊕

Mass (Jupiter)

0.990 M♃

Density

0.74 g/cm³

Surface Gravity

1.72 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.083

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

#667of 1771

top 37.6%

This planet

13.54R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HATS-63 b 13.53 R⊕ WASP-77 A b 13.56 R⊕ K2-140 b 13.56 R⊕

Metric	Earth	WASP-175 b	Jupiter
Radius (R⊕)	1.00	13.54	11.21
Mass (M⊕)	1.00	314.65	317.83
Density (g/cm³)	5.51	0.74	1.33
Surface Gravity (g)	1.00	1.72	2.53
Insolation (S⊕)	1.00	649.43	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	314.652 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 448589187

Gaia DR2

Gaia DR2 5401743332678544640

Gaia DR3

Gaia DR3 5401743332678544640

System

WASP-175

Percentile among Gas Giant cohort

Radius 13.540 R⊕ · percentile 62 / cohort 1771

Mass 314.652 M⊕ · percentile 35 / cohort 1747

Orbital period 3.07 d · percentile 17 / cohort 1533

Distance 539.36 pc · percentile 77 / cohort 1759

ESI 0.083 · percentile 19 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

3.065 days

Semi-major axis

0.0440 AU

Eccentricity

0.000

Inclination

85.33 °

Year Length

A year here lasts approximately 3.07 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0440 AU.

Transit Fingerprint

Depth

1.064 %

Duration

2.676 h

Impact parameter b

0.640

Rp / R★

0.103200

Transit midpoint (BJD)

2,457,143.7889

Photometric dip

Transit produces a flux drop of 10,640 ppm lasting ≈ 2.68 h.

Extended Orbital Architecture

Planet / star radius ratio

0.103200

Semi-major axis / stellar radius

7.860

Impact parameter (b)

0.640

RV semi-amplitude (K)

124.000 m/s

Transit mid-time (BJD)

2,457,143.7889

Angular separation (arcsec)

0.08160

Eq. Temperature

1,571K

(1298 °C)

Insolation (S⊕)

649.43

Earth = 1.00

Earth Similarity (ESI)

0.083

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

Nielsen et al. 2019

Instrument

iKon-L CCD Camera

Publication

2019-10

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-184 b · Gas Giant WASP-169 b · Gas Giant WASP-178 b · Gas Giant

Host System: WASP-175

Spectral Class

F-type yellow-white

Effective Temperature

6,229 K — hotter than the Sun (5,778 K)

Estimated Age

1.75 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.204 R☉

Stellar Mass

1.212 M☉

Metallicity [Fe/H]

0.15

Extended Stellar Properties

Surface gravity (log g)

4.359 dex

Stellar density

0.977 g/cm³

Systemic radial velocity

5.38 km/s

Rotational v·sin i

4.00 km/s

Metallicity ratio

[Fe/H]

Distance

539.36 parsec

Light-years 1,759.16 ly

V-band magnitude

12.96 mag

Voyager-speed travel 31,022,697 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

1.826 mas

Total Proper Motion

25.043 mas/yr

PM Right Ascension

-24.31 mas/yr

PM Declination

6.03 mas/yr

Galactic Cartesian (pc)

x = -0.804 · y = 0.196 · z = -0.561

Equatorial (J2000)

RA 166.31880° · Dec -34.12275°

Galactic ℓ, b

279.088° · 23.787°

Ecliptic λ, β

183.092° · -36.339°

HTM-20 index

1045517220