Key parameters at a glance
- A radius of 16.03 Earth radii
- A mass of 308.30 Earth masses
- Surface gravity around 1.20 g
- An orbital period of 5.017 days
- Semi-major axis 0.0562 AU
- Equilibrium temperature 1,270 K (997 °C)
- Distance from Earth 947.17 light-years
- Earth Similarity Index 0.093
- Travel time at Voyager 1 speed 16,703,343 years
WASP-58 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#158of 1771
top 8.9%
This planet
16.03R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-58 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 16.03 | 11.21 |
| Mass (M⊕) | 1.00 | 308.30 | 317.83 |
| Density (g/cm³) | 5.51 | 0.45 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.20 | 2.53 |
| Insolation (S⊕) | 1.00 | 404.71 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 308.295 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 424435940
Gaia DR2
Gaia DR2 2115245554756763392
Gaia DR3
Gaia DR3 2115245554756763392
System
WASP-58
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.02 Earth days (1.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0562 AU.
Transit Fingerprint
Depth
1.400 %
Duration
3.736 h
Impact parameter b
0.460
Rp / R★
0.120000
Transit midpoint (BJD)
2,458,986.9815
Photometric dip
Transit produces a flux drop of 14,000 ppm lasting ≈ 3.74 h.
Extended Orbital Architecture
Planet / star radius ratio
0.120000
Semi-major axis / stellar radius
10.350
Impact parameter (b)
0.460
RV semi-amplitude (K)
110.100 m/s
Transit mid-time (BJD)
2,458,986.9815
Angular separation (arcsec)
0.19400
Eq. Temperature
1,270K
(997 °C)
Insolation (S⊕)
404.71
Earth = 1.00
Earth Similarity (ESI)
0.093
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
Hebrard et al. 2013Instrument
iKon-L CCD Camera
Publication
2013-01
Observation locale
Ground
Discovery cohort
Planets confirmed in 2012 at SuperWASP (12 shown).
Host System: WASP-58
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,800 K — hotter than the Sun (5,778 K)
Estimated Age
12.80 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.220 R☉
Stellar Mass
1.060 M☉
Metallicity [Fe/H]
-0.45
Extended Stellar Properties
Surface gravity (log g)
4.270 dex
Stellar density
0.830 g/cm³
Systemic radial velocity
-28.66 km/s
Rotational v·sin i
2.80 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
3.415 mas
Total Proper Motion
57.302 mas/yr
PM Right Ascension
32.58 mas/yr
PM Declination
47.14 mas/yr
Galactic Cartesian (pc)
x = 0.058 · y = -0.703 · z = 0.709
Equatorial (J2000)
RA 274.70125° · Dec 45.17222°
Galactic ℓ, b
72.933° · 24.358°
Ecliptic λ, β
279.052° · 68.464°
HTM-20 index
-729867261
Similar Worlds
HATS-34 b
Gas Giant · G-type yellow (Sun-like)
Radius 16.03 R⊕ · 1,659.6 ly
WASP-81 b
Gas Giant · G-type yellow (Sun-like)
Radius 16.02 R⊕ · 1,299.7 ly
CoRoT-12 b
Gas Giant · G-type yellow (Sun-like)
Radius 16.14 R⊕ · 3,673.7 ly
NGTS-32 b
Gas Giant · G-type yellow (Sun-like)
Radius 15.92 R⊕ · 2,731.4 ly
WASP-19 b
Gas Giant · G-type yellow (Sun-like)
Radius 15.86 R⊕ · 875.2 ly
WASP-63 b
Gas Giant · G-type yellow (Sun-like)
Radius 15.80 R⊕ · 948.1 ly