Key parameters at a glance

A radius of 12.64 Earth radii
A mass of 676.98 Earth masses
Surface gravity around 4.23 g
An orbital period of 1.777 days
Semi-major axis 0.0282 AU
Equilibrium temperature 1,610 K (1337 °C)
Distance from Earth 1,068.18 light-years
Earth Similarity Index 0.095
Travel time at Voyager 1 speed 18,837,362 years

WASP-164 b Planet Profile

Physical Specs

Radius

12.64 R⊕

Radius (Jupiter)

1.128 R♃

Mass

676.98 M⊕

Mass (Jupiter)

2.130 M♃

Density

1.96 g/cm³

Surface Gravity

4.23 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.095

HZ Position Inner

Controversial No

Discovery

Year 2018

Method Transit

Facility SuperWASP-South

Telescope Canon 200mm f/1.8L

Size rank in cohort

Rank by radius

#1176of 1771

top 66.3%

This planet

12.64R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

TOI-5292 A b 12.64 R⊕ SWEEPS-11 b 12.67 R⊕ OGLE-TR-182 b 12.67 R⊕

Metric	Earth	WASP-164 b	Jupiter
Radius (R⊕)	1.00	12.64	11.21
Mass (M⊕)	1.00	676.98	317.83
Density (g/cm³)	5.51	1.96	1.33
Surface Gravity (g)	1.00	4.23	2.53
Insolation (S⊕)	1.00	1,043.21	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	676.978 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 237320326

Gaia DR2

Gaia DR2 6491038642006989056

Gaia DR3

Gaia DR3 6491038642006989056

System

WASP-164

Percentile among Gas Giant cohort

Radius 12.644 R⊕ · percentile 34 / cohort 1771

Mass 676.978 M⊕ · percentile 57 / cohort 1747

Orbital period 1.78 d · percentile 5 / cohort 1533

Distance 327.51 pc · percentile 63 / cohort 1759

ESI 0.095 · percentile 25 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

1.777 days

Semi-major axis

0.0282 AU

Eccentricity

0.000

Inclination

82.73 °

Year Length

A year here lasts approximately 1.78 Earth days (0.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0282 AU.

Transit Fingerprint

Depth

1.542 %

Duration

1.604 h

Impact parameter b

0.822

Rp / R★

0.124200

Transit midpoint (BJD)

2,457,203.8538

Photometric dip

Transit produces a flux drop of 15,420 ppm lasting ≈ 1.60 h.

Extended Orbital Architecture

Planet / star radius ratio

0.124200

Semi-major axis / stellar radius

6.500

Impact parameter (b)

0.822

RV semi-amplitude (K)

367.000 m/s

Transit mid-time (BJD)

2,457,203.8538

Angular separation (arcsec)

0.08600

Eq. Temperature

1,610K

(1337 °C)

Insolation (S⊕)

1,043.21

Earth = 1.00

Earth Similarity (ESI)

0.095

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

Lendl et al. 2019

Instrument

iKon-L CCD Camera

Publication

2019-01

Observation locale

Ground

Discovery cohort

Planets confirmed in 2018 at SuperWASP-South (12 shown).

WASP-162 b · Gas Giant WASP-145 A b · Gas Giant WASP-144 b · Neptune-like WASP-170 b · Gas Giant WASP-160 B b · Gas Giant WASP-158 b · Gas Giant WASP-161 b · Gas Giant WASP-163 b · Gas Giant WASP-147 b · Gas Giant WASP-173 A b · Gas Giant WASP-165 b · Gas Giant WASP-168 b · Gas Giant

Host System: WASP-164

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,806 K — hotter than the Sun (5,778 K)

Estimated Age

4.08 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.932 R☉

Stellar Mass

0.946 M☉

Metallicity [Fe/H]

-0.01

Extended Stellar Properties

Surface gravity (log g)

4.457 dex

Stellar density

1.642 g/cm³

Systemic radial velocity

12.26 km/s

Metallicity ratio

[Fe/H]

Distance

327.51 parsec

Light-years 1,068.18 ly

V-band magnitude

12.60 mag

Voyager-speed travel 18,837,362 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

3.025 mas

Total Proper Motion

20.300 mas/yr

PM Right Ascension

20.18 mas/yr

PM Declination

-2.19 mas/yr

Galactic Cartesian (pc)

x = 0.476 · y = -0.129 · z = -0.870

Equatorial (J2000)

RA 344.87359° · Dec -60.44782°

Galactic ℓ, b

324.836° · -51.655°

Ecliptic λ, β

315.728° · -48.325°

HTM-20 index

1276375378