Confirmed Exoplanet Discovered 2017

WASP-167 b

A gas giant orbiting the f-type yellow-white WASP-167, located approximately 1,381.4 light-years from Earth.

Key parameters at a glance

  • A radius of 17.71 Earth radii
  • A mass of 2,542.64 Earth masses
  • Surface gravity around 8.11 g
  • An orbital period of 2.022 days
  • Semi-major axis 0.0365 AU
  • Equilibrium temperature 2,329 K (2056 °C)
  • Distance from Earth 1,381.44 light-years
  • Earth Similarity Index 0.025
  • Travel time at Voyager 1 speed 24,361,698 years

WASP-167 b Planet Profile

Physical Specs

Radius
17.71 R⊕
Radius (Jupiter)
1.580 R♃
Mass
2,542.64 M⊕
Mass (Jupiter)
8.000 M♃
Density
g/cm³
Surface Gravity
8.11 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.025
HZ Position Inner
Controversial No

Discovery

Year 2017
Method Transit
Facility Multiple Observatories
Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#85of 1771

top 4.7%

This planet

17.71R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth WASP-167 b Jupiter
Radius (R⊕)1.0017.7111.21
Mass (M⊕)1.002,542.64317.83
Density (g/cm³)5.511.33
Surface Gravity (g)1.008.112.53
Insolation (S⊕)1.003,208.410.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 2,542.640 M⊕ Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 104024556

Gaia DR2

Gaia DR2 6154982877299042944

Gaia DR3

Gaia DR3 6154982877300947840

System

WASP-167

Percentile among Gas Giant cohort

Radius 17.710 R⊕ · percentile 95 / cohort 1771
Mass 2,542.640 M⊕ · percentile 84 / cohort 1747
Orbital period 2.02 d · percentile 7 / cohort 1533
Distance 423.55 pc · percentile 71 / cohort 1759
ESI 0.025 · percentile 0 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
2.022 days
Semi-major axis
0.0365 AU
Eccentricity
Inclination
79.90 °

Year Length

A year here lasts approximately 2.02 Earth days (0.6% of a terrestrial year) at a mean orbital distance of 0.0365 AU.

Transit Fingerprint

Depth

0.820 %

Duration

2.724 h

Impact parameter b

0.770

Rp / R★

0.090600

Transit midpoint (BJD)

2,456,592.4643

Photometric dip

Transit produces a flux drop of 8,200 ppm lasting ≈ 2.72 h.

Extended Orbital Architecture

Planet / star radius ratio

0.090600

Semi-major axis / stellar radius

4.230

Impact parameter (b)

0.770

Transit mid-time (BJD)

2,456,592.4643

Sky-projected obliquity (λ)

-165.00°

Angular separation (arcsec)

0.08620

Eq. Temperature

2,329K

(2056 °C)

Insolation (S⊕)

3,208.41

Earth = 1.00

Earth Similarity (ESI)

0.025

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

Discovery Paper

Primary reference

Temple et al. 2017

Instrument

Multiple Instruments

Publication

2017-11

Observation locale

Ground

Host System: WASP-167

Spectral Class

F-type yellow-white

Effective Temperature

7,000 K — hotter than the Sun (5,778 K)

Estimated Age

1.29 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.790 R☉

Stellar Mass

1.590 M☉

Metallicity [Fe/H]

0.10

Extended Stellar Properties

Surface gravity (log g)

4.130 dex

Stellar density

0.390 g/cm³

Systemic radial velocity

-3.41 km/s

Rotational v·sin i

49.94 km/s

Rotation period

1.81 days

Metallicity ratio

[Fe/H]

Distance
423.55 parsec
Light-years 1,381.44 ly
V-band magnitude
10.52 mag
Voyager-speed travel 24,361,698 yr

Multi-band Host Photometry — 11 bands

9.310.910.93B10.52V10.58Gaia10.32TESS9.93J9.83H9.76K9.73W19.75W29.70W39.30W4

Astrometric Data

Parallax

2.334 mas

Total Proper Motion

18.687 mas/yr

PM Right Ascension

-18.66 mas/yr

PM Declination

1.04 mas/yr

Galactic Cartesian (pc)

x = -0.782 · y = -0.225 · z = -0.581

Equatorial (J2000)

RA 196.04379° · Dec -35.54953°

Galactic ℓ, b

305.846° · 27.250°

Ecliptic λ, β

209.228° · -26.358°

HTM-20 index

17121554

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