Key parameters at a glance
- A radius of 10.54 Earth radii
- A mass of 143.02 Earth masses
- Surface gravity around 1.29 g
- An orbital period of 4.617 days
- Semi-major axis 0.0561 AU
- Equilibrium temperature 1,216 K (943 °C)
- Distance from Earth 1,047.23 light-years
- Earth Similarity Index 0.113
- Travel time at Voyager 1 speed 18,467,983 years
WASP-56 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1724of 1771
top 97.3%
This planet
10.54R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-56 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 10.54 | 11.21 |
| Mass (M⊕) | 1.00 | 143.02 | 317.83 |
| Density (g/cm³) | 5.51 | 0.58 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.29 | 2.53 |
| Insolation (S⊕) | 1.00 | 447.82 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 143.024 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 347329162
Gaia DR2
Gaia DR2 4001613814138156416
Gaia DR3
Gaia DR3 4001613814138156416
System
WASP-56
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.62 Earth days (1.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0561 AU.
Transit Fingerprint
Depth
1.000 %
Duration
3.562 h
Impact parameter b
0.272
Rp / R★
0.100950
Transit midpoint (BJD)
2,455,841.6094
Photometric dip
Transit produces a flux drop of 10,000 ppm lasting ≈ 3.56 h.
Extended Orbital Architecture
Planet / star radius ratio
0.100950
Semi-major axis / stellar radius
10.880
Impact parameter (b)
0.272
RV semi-amplitude (K)
69.000 m/s
Transit mid-time (BJD)
2,455,841.6094
Angular separation (arcsec)
0.17500
Eq. Temperature
1,216K
(943 °C)
Insolation (S⊕)
447.82
Earth = 1.00
Earth Similarity (ESI)
0.113
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-56
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,600 K — cooler than the Sun (5,778 K)
Estimated Age
6.20 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.960 R☉
Stellar Mass
0.710 M☉
Metallicity [Fe/H]
0.12
Extended Stellar Properties
Surface gravity (log g)
4.500 dex
Stellar density
1.140 g/cm³
Systemic radial velocity
4.68 km/s
Rotational v·sin i
1.50 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
3.086 mas
Total Proper Motion
36.801 mas/yr
PM Right Ascension
-36.69 mas/yr
PM Declination
2.79 mas/yr
Galactic Cartesian (pc)
x = -0.919 · y = -0.054 · z = 0.392
Equatorial (J2000)
RA 183.36604° · Dec 23.05569°
Galactic ℓ, b
236.205° · 80.491°
Ecliptic λ, β
173.400° · 22.383°
HTM-20 index
1624559773
Similar Worlds
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Gas Giant · G-type yellow (Sun-like)
Radius 10.54 R⊕ · 2,139.6 ly
TOI-7510 d
Gas Giant · G-type yellow (Sun-like)
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TOI-1199 b
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WASP-126 b
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TOI-6041 c
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Gas Giant · G-type yellow (Sun-like)
Radius 10.58 R⊕ · 3,061.7 ly