Key parameters at a glance

A radius of 16.87 Earth radii
A mass of 271.74 Earth masses
Surface gravity around 0.95 g
An orbital period of 3.899 days
Semi-major axis 0.0535 AU
Equilibrium temperature 1,721 K (1448 °C)
Distance from Earth 1,853.94 light-years
Earth Similarity Index 0.060
Travel time at Voyager 1 speed 32,694,158 years

WASP-176 b Planet Profile

Physical Specs

Radius

16.87 R⊕

Radius (Jupiter)

1.505 R♃

Mass

271.74 M⊕

Mass (Jupiter)

0.855 M♃

Density

0.31 g/cm³

Surface Gravity

0.95 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.060

HZ Position Inner

Controversial No

Discovery

Year 2020

Method Transit

Facility SuperWASP-North

Telescope Canon 200mm f/1.8L

Size rank in cohort

Rank by radius

#114of 1771

top 6.4%

This planet

16.87R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HATS-65 b 16.82 R⊕ HAT-P-56 b 16.93 R⊕ HAT-P-7 b 16.93 R⊕

Metric	Earth	WASP-176 b	Jupiter
Radius (R⊕)	1.00	16.87	11.21
Mass (M⊕)	1.00	271.74	317.83
Density (g/cm³)	5.51	0.31	1.33
Surface Gravity (g)	1.00	0.95	2.53
Insolation (S⊕)	1.00	1,703.24	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	271.745 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 375942197

Gaia DR2

Gaia DR2 1750321012752775040

Gaia DR3

Gaia DR3 1750321012752775040

System

WASP-176

Percentile among Gas Giant cohort

Radius 16.870 R⊕ · percentile 94 / cohort 1771

Mass 271.745 M⊕ · percentile 30 / cohort 1747

Orbital period 3.90 d · percentile 28 / cohort 1533

Distance 568.42 pc · percentile 78 / cohort 1759

ESI 0.060 · percentile 9 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

3.899 days

Semi-major axis

0.0535 AU

Eccentricity

0.000

Inclination

86.70 °

Year Length

A year here lasts approximately 3.90 Earth days (1.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0535 AU.

Transit Fingerprint

Depth

0.640 %

Duration

5.153 h

Impact parameter b

0.347

Transit midpoint (BJD)

2,458,234.1771

Photometric dip

Transit produces a flux drop of 6,400 ppm lasting ≈ 5.15 h.

Eq. Temperature

1,721K

(1448 °C)

Insolation (S⊕)

1,703.24

Earth = 1.00

Earth Similarity (ESI)

0.060

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

Cooke et al. 2020

Instrument

Andor e2v CCD Camera

Publication

2020-06

Observation locale

Ground

Discovery cohort

Planets confirmed in 2020 at SuperWASP-North (2 shown).

WASP-148 b · Neptune-like WASP-150 b · Gas Giant

Host System: WASP-176

Spectral Class

F-type yellow-white

Effective Temperature

5,941 K — hotter than the Sun (5,778 K)

Estimated Age

4.81 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.925 R☉

Stellar Mass

1.345 M☉

Metallicity [Fe/H]

0.16

Extended Stellar Properties

Surface gravity (log g)

3.995 dex

Stellar density

0.371 g/cm³

Systemic radial velocity

4.90 km/s

Rotational v·sin i

3.80 km/s

Metallicity ratio

[Fe/H]

Distance

568.42 parsec

Light-years 1,853.94 ly

V-band magnitude

12.01 mag

Voyager-speed travel 32,694,158 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

1.731 mas

Total Proper Motion

7.930 mas/yr

PM Right Ascension

-6.19 mas/yr

PM Declination

-4.95 mas/yr

Galactic Cartesian (pc)

x = 0.682 · y = -0.714 · z = 0.160

Equatorial (J2000)

RA 313.68729° · Dec 9.17907°

Galactic ℓ, b

56.662° · -22.179°

Ecliptic λ, β

319.056° · 25.488°

HTM-20 index

-501853769