Key parameters at a glance
- A radius of 17.71 Earth radii
- A mass of 187.52 Earth masses
- Surface gravity around 0.60 g
- An orbital period of 3.694 days
- Semi-major axis 0.0499 AU
- Equilibrium temperature 1,759 K (1486 °C)
- Distance from Earth 819.64 light-years
- Earth Similarity Index 0.051
- Travel time at Voyager 1 speed 14,454,347 years
WASP-54 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
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-54 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 17.71 | 11.21 |
| Mass (M⊕) | 1.00 | 187.52 | 317.83 |
| Density (g/cm³) | 5.51 | 0.17 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.60 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,639.11 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 187.520 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 61098812
Gaia DR2
Gaia DR2 3661983850663908608
Gaia DR3
Gaia DR3 3661983850663908608
System
WASP-54
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.69 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0499 AU.
Transit Fingerprint
Depth
0.860 %
Duration
4.466 h
Impact parameter b
0.490
Rp / R★
0.092700
Transit midpoint (BJD)
2,459,163.9333
Photometric dip
Transit produces a flux drop of 8,600 ppm lasting ≈ 4.47 h.
Extended Orbital Architecture
Planet / star radius ratio
0.092700
Semi-major axis / stellar radius
5.880
Impact parameter (b)
0.490
RV semi-amplitude (K)
73.000 m/s
Transit mid-time (BJD)
2,459,163.9333
Long. of periastron (ω)
62.00°
Angular separation (arcsec)
0.19800
Eq. Temperature
1,759K
(1486 °C)
Insolation (S⊕)
1,639.11
Earth = 1.00
Earth Similarity (ESI)
0.051
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
Faedi et al. 2013Instrument
iKon-L CCD Camera
Publication
2013-03
Observation locale
Ground
Discovery cohort
Planets confirmed in 2012 at SuperWASP (12 shown).
Host System: WASP-54
Spectral Class
F-type yellow-white
Effective Temperature
6,100 K — hotter than the Sun (5,778 K)
Estimated Age
6.90 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.760 R☉
Stellar Mass
1.080 M☉
Metallicity [Fe/H]
-0.27
Extended Stellar Properties
Surface gravity (log g)
4.000 dex
Stellar density
0.280 g/cm³
Systemic radial velocity
-3.13 km/s
Rotational v·sin i
4.00 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
3.952 mas
Total Proper Motion
26.981 mas/yr
PM Right Ascension
-10.89 mas/yr
PM Declination
-24.68 mas/yr
Galactic Cartesian (pc)
x = -0.903 · y = -0.430 · z = -0.002
Equatorial (J2000)
RA 205.45425° · Dec -0.12817°
Galactic ℓ, b
328.936° · 60.175°
Ecliptic λ, β
203.635° · 9.724°
HTM-20 index
-1862295416
Similar Worlds
WASP-167 b
Gas Giant · F-type yellow-white
Radius 17.71 R⊕ · 1,381.4 ly
HATS-40 b
Gas Giant · F-type yellow-white
Radius 17.71 R⊕ · 4,378.0 ly
WASP-94 A b
Gas Giant · F-type yellow-white
Radius 17.71 R⊕ · 688.9 ly
HAT-P-39 b
Gas Giant · F-type yellow-white
Radius 17.61 R⊕ · 2,273.3 ly
HATS-39 b
Gas Giant · F-type yellow-white
Radius 17.60 R⊕ · 2,865.3 ly
WASP-172 b
Gas Giant · F-type yellow-white
Radius 17.60 R⊕ · 1,755.1 ly