Confirmed Exoplanet Discovered 2019

WASP-192 b

A gas giant orbiting the g-type yellow (sun-like) WASP-192, located approximately 1,659.8 light-years from Earth.

Key parameters at a glance

  • A radius of 13.79 Earth radii
  • A mass of 731.01 Earth masses
  • Surface gravity around 3.85 g
  • An orbital period of 2.879 days
  • Semi-major axis 0.0408 AU
  • Equilibrium temperature 1,620 K (1347 °C)
  • Distance from Earth 1,659.76 light-years
  • Earth Similarity Index 0.089
  • Travel time at Voyager 1 speed 29,269,848 years

WASP-192 b Planet Profile

Physical Specs

Radius
13.79 R⊕
Radius (Jupiter)
1.230 R♃
Mass
731.01 M⊕
Mass (Jupiter)
2.300 M♃
Density
1.62 g/cm³
Surface Gravity
3.85 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.089
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

#540of 1771

top 30.4%

This planet

13.79R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth WASP-192 b Jupiter
Radius (R⊕)1.0013.7911.21
Mass (M⊕)1.00731.01317.83
Density (g/cm³)5.511.621.33
Surface Gravity (g)1.003.852.53
Insolation (S⊕)1.00471.140.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 731.009 M⊕ Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 160578764

Gaia DR2

Gaia DR2 6198312362812872320

Gaia DR3

Gaia DR3 6198312362812872320

System

WASP-192

Percentile among Gas Giant cohort

Radius 13.787 R⊕ · percentile 69 / cohort 1771
Mass 731.009 M⊕ · percentile 59 / cohort 1747
Orbital period 2.88 d · percentile 14 / cohort 1533
Distance 508.89 pc · percentile 75 / cohort 1759
ESI 0.089 · percentile 22 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
2.879 days
Semi-major axis
0.0408 AU
Eccentricity
0.000
Inclination
82.70 °

Year Length

A year here lasts approximately 2.88 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0408 AU.

Transit Fingerprint

Depth

0.926 %

Duration

2.314 h

Impact parameter b

0.840

Rp / R★

0.096200

Transit midpoint (BJD)

2,457,271.3331

Photometric dip

Transit produces a flux drop of 9,260 ppm lasting ≈ 2.31 h.

Extended Orbital Architecture

Planet / star radius ratio

0.096200

Semi-major axis / stellar radius

6.650

Impact parameter (b)

0.840

RV semi-amplitude (K)

307.000 m/s

Transit mid-time (BJD)

2,457,271.3331

Angular separation (arcsec)

0.08020

Eq. Temperature

1,620K

(1347 °C)

Insolation (S⊕)

471.14

Earth = 1.00

Earth Similarity (ESI)

0.089

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

Hellier et al. 2019

Instrument

iKon-L CCD Camera

Publication

2019-11

Observation locale

Ground

Host System: WASP-192

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,910 K — hotter than the Sun (5,778 K)

Estimated Age

5.70 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.320 R☉

Stellar Mass

1.090 M☉

Metallicity [Fe/H]

0.14

Extended Stellar Properties

Surface gravity (log g)

4.236 dex

Stellar density

0.671 g/cm³

Systemic radial velocity

15.90 km/s

Rotational v·sin i

3.10 km/s

Metallicity ratio

[Fe/H]

Distance
508.89 parsec
Light-years 1,659.76 ly
V-band magnitude
12.68 mag
Voyager-speed travel 29,269,848 yr

Multi-band Host Photometry — 11 bands

9.113.313.32B12.68V12.53Gaia12.10TESS11.49J11.19H11.14K11.09W111.12W211.10W39.07W4

Astrometric Data

Parallax

1.939 mas

Total Proper Motion

1.693 mas/yr

PM Right Ascension

0.72 mas/yr

PM Declination

-1.53 mas/yr

Galactic Cartesian (pc)

x = -0.564 · y = -0.538 · z = -0.626

Equatorial (J2000)

RA 223.65872° · Dec -38.74455°

Galactic ℓ, b

327.778° · 18.111°

Ecliptic λ, β

232.780° · -21.102°

HTM-20 index

1157336382

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